US3668135A - Antimicrobic washing agents, washing adjuvants and cleaning agents - Google Patents

Abstract

Antimicrobic washing agents and adjuvants and cleaning compositions comprising (a) 0.2 to 30 percent by weight of a nitroalkyl-N-phenylcarbamate selected from the group consisting of 2-nitropropyl-N-phenylcarbamate, 1-methyl-2-nitropropyl-Nphenylcarbamate, 2-nitrobutyl-N-phenylcarbamate, 2-bromo-2nitroethyl-N- (3-chlorophenyl)-carbamate, 2-bromo-4-nitrobutyl-N(4-nitrophenyl)-carbamate, 2-bromo-2-nitrobutyl-N-(3, 4dichlorophenyl)- carbamate, 2-bromo-2-nitropropyl-N-phenylcarbamate and 2-bromo-2-nitrobutyl-N-(4-fluorophenyl)-carbamate (b) at least 5 percent by weight of an alkaline builder having calcium carbonate binding capacity in the Hampshire test of not more than 230 mg per gm of builder and (c) and optionally other common components of washing agents, washing adjuvants or cleaning compositions.

Description

United States Paten Nosler et al.

[ 1 June6, 1972 [54] ANTIMICROBIC WASHING AGENTS,

WASHING ADJUYANTS AND CLEANING AGENTS [72] inventors: Heinz Gunter Nosler, Monheim Rhine- Land; Richard Wessendorf, Hilden Rhine- Land; Horst Bellinger, Dusseldorf, all of Germany [73] Assignee: Henkel 8t Cie., GmbH, Dusseldorf, Germany [22] Filed: Nov. 7, 1968 21 Appl. No.: 774,183

Related US. Application Data [63] Continuation-impart of Ser. No. 747,453, July 25,

1968, Pat. No. 3,592,928,

[30] Foreign Application Priority Data June 4, 1968 Germany ..P 17 67 684.5 July 25, 1967 Germany ..P 16 68 195.1

[52] US. Cl ..252/107, 252/106 [5 1] Int. Cl. ..Cl 1d 3/48 [58] Field of Search ..252/106, 107; 424/300;

[56] References Cited UNITED STATES PATENTS 3,507,796 4/1970 Voss ..252/106 3,029,273 3/ i962 Beaver et a]. ..260/471 FORElGN PATENTS OR APPLICATIONS 661,724 ll/l95l 753,207 2/1967 Great Britain Canada Primary Examiner-Herbert B. Guynn Assistant Examiner-P. E. Willis Attorney-Hammond and Littell [57] ABSTRACT cent by weight of an alkaline builder having calcium carbonate binding capacity in the Hampshire test of not more than 230 mg per gm of builder and (c) and optionally other common components of washing agents, washing adjuvants or cleaning compositions.

20 Claims, No Drawings ANTIMICROBIC WASHING AGENTS, WASHING ADJUVANTS AND CLEANING AGENTS PRIOR APPLICATION This application is a continuation-in-part application of copending, commonly assigned US. Patent application, Ser. No. 747,453, filed July 25, 1968 now US. Pat. No. 3,592,928.

THE PRIOR ART The addition of substances with an antimicrobial action to washing agents is known, especially when the washing agents are to be used under fine washing conditions, that is, at temperatures in the range from 30 to 50 C. These temperatures are not by any means sufficient to kill unwanted micro-organisms such as bacteria or fungi. The cleaning action of the washing agent must therefore be supplemented by a suitable antimicrobial substance. But an addition of antimicrobial substances may also be desirable in the case of washing agents which are intended for use at higher temperatures, especially in the region of the boiling temperatures, especially when the articles to be washed consist of clothing or bed linen from hospitals, where heavy organic contamination, as for example, ointments, blood, pus or sputum, retards the destruction of the micro-organisms. The presence of antimicrobial substances is also frequently desired in the case of cleaning agents which are intended for cleaning other than textile materials in the household, in business and in industry.

OBJECTS OF THE INVENTION An object of the present invention is the obtention of antimicrobial washing agent and washing adjuvant compositions comprising (a) from 0.2 to 30 percent by weight of a nitroalky-N-phenylcarbamate of the formula wherein Y is selected from the group consisting of flourine chlorine, bromine, triflouromethyl and nitro, n is a whole number from O to 2, R is selected from the group consisting of hydrogen and methyl, X is selected from the group of hydrogen and bromine and Z is selected from the group consisting of hydrogen, methyl, ethyl and the group of the formula Yn R O N 2 @am-k-o-oa-px Y,, R Z

wherein Y is selected from the group consisting of flourine, chlorine, bromine, triflouromethyl and nitro, n is a whole number from 0 to 2, R is selected from the group consisting of hydrogen and methyl, X is selected from the group consisting of hydrogen and bromine and Z is selected from the group consisting of hydrogen, methyl, ethyl and the group of the formula wherein Y, R and n have the above definitions (b) at least 5 percent by weight of an alkaline builder having calcium carbonate binding capacity in the Hampshire test of not more than 230 mg per gm of builder and (c) any optionally other common components of washing agents, washing adjuvants or cleaning compositions in which a portion of the alkaline builder in (b) has a calcium carbonate binding capacity greater than 230 mg per gm in the Hampshire test.

DESCRIPTION OF THE INVENTION The antimicrobic washing agents, washing adjuvants and cleaning agents of the invention are comprised of (a) 0.2 to 30 percent of a nitroalkyl-N-phenyl carbamate of the formula Y R i X wherein Y is selected from the group consisting of flourine, chlorine, bromine, triflouromethyl and nitro, n is a whole number from O to 2, R is selected from the group consisting of hydrogen and methyl, X is selected from the group consisting of hydrogen and bromine and Z is selected from the group consisting of hydrogen, methyl, ethyl and the group of the formula wherein Y, R and n have the above definitions (b) at least 5 percent by weight of an alkaline builder having calcium carbonate binding capacity in the Hampshire test of not more than 230 mg per gm of builder and (c) and optionally other common components of washing agents, washing adjuvants or cleaning compositions. Preferably, the compositions contain 1 to 5 percent by weight of the nitroalkyl-N-phenylcarbamate of Formula I and at least 10 percent by weight of the alkaline builder. These mixture components refer to the sum of the quantities of component (a) and the quantities of the watersoluble constituents of components (b) and (c) minus any solvent present.

The above alkaline builders define under (b) need have no complex-forming ability at all. The usually inorganic salts frequently known as wash alkalis are preferably used here. In particular cases, free bases, especially alkali metal hydroxides, may also be used. The alkaline builders according to (b) may have a certain amount of complex-forming ability. The above specifications for the component (b), however, only apply to those fractions whose complex-forming ability does not exceed the limits indicated above.

The presence of substances with higher complex-forming capacity is in no way excluded by this. Onthe contrary, the builders according to (b) are preferably present together with complex-forming compounds whose ability to form complexes lies above 230 mg of CaCO per gram of complex-fomiing compound according to the Hampshire test. The ratio of alkaline builders to complex-forming compound may vary within wide limits. A synergistic action between antimicrobial substance and complex-forming compound (above 230 mg of CaCO per gram) is already found when the amount of this complex-forming compound constitutes at least 3 percent and preferably at least percent by weight of the washing preparation. The fraction of complex-forming compound in the mixture of complex-forming compound and alkaline builders (b) may amount to 10 to 90 percent, preferably 25 to 75 percent by weight.

The same quantitative data apply here also under the same provisos, to the extent that they relate to the whole preparation and not to parts or partial mixtures thereof.

The alkaline builders within the meaning of the invention also include bleaching components, provided they themselves have an alkaline reaction, or the compounds remaining after the release of the active oxygen have an alkaline reaction.

Some bleaching components, as for example monoper sulfates or diacyl peroxides, and especially dibenzoyl peroxides, themselves have an acid reaction or provide acid reaction products after the evolution of the oxygen. These non-alkaline-reacting substances may be used as bleaching components in the products according to the invention provided sufficient alkali is present to maintain the pH at the desired value.

If the washing agent and washing adjuvant preparations according to the invention are intended for use with textiles, they should have pH values of about 8 to 12 in a 1 percent aqueous solution. These pH values are generally adjusted to the weaker alkaline values (pH 8 to 9.5) for fine washing agents and to the more strongly alkaline values (pH 9.5 to 12 preferably 10 to 11.5) for washing agents, for use at higher temperatures up to the boiling point. Also products often intended for cleaning the surfaces of solid materials, with the exception of textiles, in the house, in professional operations and in industry may have pH values of this kind. Still more strongly alkaline-reacting products may also be produced, which for example contain free caustic alkalis, and which, in general, are only used for special purposes.

The. washing agents according to the invention can be used for the washing, and washing with bleaching of a large variety of fibers of natural or synthetic origin, such as for example, cotton, regenerated cellulose or linen, as well as for the socalled easy care" textiles, which consist wholly or partly of highly finished cotton or of synthetic chemical fibers, such as for example, polyamide, polyester, polyacrylonitrile, polyurethane, polyvinyl chloride or polyvinylidene chloride fibers. Also washing adjuvants, such as steeping or after-rinsing preparations, which contain the antimicrobial substances to be used according to the invention, can also be used with advantage. Hair and bodywashing agents, cleaning agents for the hands and cleaning agents for instruments or for industrial plants, as for example, dairies, breweries and so so, also belong to the preparations according to the invention.

The preparations according to the invention may be produced as lumps, tablets, powders, granulates, agglomerates, pastes or solutions. Apart from preparations in which the pasty nature is due essentially to the presence of corresponding amounts of paste-like surface-active compounds (non-ionics), the pasty or liquid nature of the preparation of the invention is mostly due to the presence of corresponding amounts of liquid solvents, in which the other components of the preparation are suspended or dissolved. The content of solvent in these preparations may amount to 40 to 90 percent, preferably 50 to 85 percent by weight.

Water is the preferred solvent, but it may be wholly or partly replaced by water-soluble organic solvents, as, for example, monohydric alcohols with one to four, preferably two one another or with the said monohydric alcohols. Examples of these comprise alkanols such as ethyl, nor iso-propyl alcohols, alkanediols and triols such as ethylene glycol,

glycerine; alkoxyalkanols such as ethylene glycol monomethyl or monoethyl ethers, glycerine monoor di-ethers of methyl or ethyl alcohols; and so forth. Y

In the preparations, according to the invention, water may be present as water of crystallization in salts, especially inorganic salts (-Na,CO -lOl-l,O, 'Na PO -IZH O, Na P O, -6H,O This water is not to be regarded as solvent.

The nitroalkyl-N-phenylcarbamates of Formula I are suitable as antimicrobic agents and especially preferred are those nitroalkyl-N-phenylcarbamates of Formula I in which X is bromine since with their aid preparations with especially high activity, that is with possibly especially low bactericidal or fungicidal concentrations with satisfactory activity can be prepared.

Examples of specific nitroalkyl-N-phenylcarbamates of Formula l are: 2-nitroethyl-N-phenylcarbamate, 2-nitroethyl-N- (3- chlorophenyl )-carbamate, 2-nitroethyl-N-( 3,4-dichlorophenyl)-carbarnate, 2-nitroethyl-N- (4-nitrophenyl)-carbamate, lmethyl-2-nitroethyl-N-(3,4-dichlorophenyl)-carbamate, 2- nitropropyl-N-phenyl-carbamate, 2-nitropropyl-N-( 3- chlorophenyl)-carbamate, 2-nitrobutyl-N-phenyl-carbamate,

l-methyl-Z-nitropropyl-N- phenylcarbamate, l -methyl-2- nitrobutyl-N-(4-nitrophenyl)-carbamate, 2-bromo-2- nitroethyl-N-( 3-chlorophenyl)-carbamate, l-methyl-2- bromo-2-nitroethyl-N-phenylcarbamate, -bromo-2- nitropropyl-N-( 3-chlorophenyl)-carbamate, 2-bromo-2- nitrobutyl-N-phenylcarbamate, 2-bromo-2-nitrobutyl-N-( 3 ,4- dichlorophenyl)-carbamate, 1-methyl-2-bromo-2-nitropropyl- N-(4-nitrophenyl)carbamate, l-methyl-2-bromo-2- nitropropyl-N-( 4-nitrophenyl )carbamate, l-methyl-Z-bromo- 2-nitrobutyl-N-phenylcarbamate, 2-nitropropanediol-( 1,3 bisN-phenylcarbamate, 2-nitropropanediol-( 1,3 )-bis-N-( 3,4- dichlorophenyl)-carbamate, l-methyl-2-nitropropanediol,- l ,3 )-bis-N-( 3-chlorophenyl)-carbamate, l ,3-dimethyl-2- nitropropanediol-( 1 ,3 )-bis-N-( 4-nitrophenyl)-carbamate,2- bromo-2-nitropropanediol-( l ,3 )-bis-N-phenyl-carbamate, nitropropanediol-( l ,3 )-bis-N-( 3-chlorophenyl)- carbamate, 2- bromo-2-nitropropanediol-( 1,3 )-bis-N-( 3 ,4-dichlorophenyl carbamate, nitrophenyl)-carbamate, l -methyl-2-bromo-2- nitropropanediol-( 1,3 )-bis-N-( 3-chlorophenyl)-carbamate, l ,3-dimethyl-2-bromo-nitropropanediol-( l ,3 )-bis-N-( 3,4- dichlorophenyl )-carbamate, 2-nitroalkyl-N-( 3- trifluoromethylphenyl)-carbamate 2-bromo-2-nitro-butyl-N- (3-trifluoromethylphenyl )-carbamate.

Surface-active compounds, possibly including textile softenets, foam stabilizers and/or foam inhibitors, dirt carriers, enzymes, bleaching components and stabilizers for the bleaching components, belong to the other constituents customary in washing agents, washing adjuvants and cleaning agents according to the definition of the invention, and, if percompounds are concerned, also activators for these, scouring agents, perfumes, dyestuffs and so forth.

The composition of the washing agents, washing adjuvants and cleaning agents according to the invention apart fromthe antimicrobial substance which is present in amounts from 0.2 to 30 percent preferably 1 to 5 percent by weight, lies in general within the range of the following fonnulationz' 0 to percent, preferably 5 to 40 percent and especially 12 to 30 percent by weight of surface-active compounds, possibly including textile softeners or combinations of surface-active compounds, consisting of:

0 to percent, preferably 25 to 65 percent by weight of surface-active compounds of the sulfonate and/or sulfate type with preferably eight to 18 carbon atoms in the hydrophobic residue,

0 to 100 percent, preferably 5 to 40 percent by weight of non-ionic surface-active compounds,

2-bromo-2-nitro-propanediol-( l ,3 )-bis-N-( 4- to 100 percent, preferably 10 to 50 percent by weight of soap,

0 to 6 percent, preferably 0.5 to 3 percent by weight of foam stabilizers,

0 to 8 percent, preferably 0.5 to 5 percent by weight of nonsurface-active foam inhibitors,

5 to 99 percent preferably to 70 percent by weight of the usual alkaline-reacting builder according to the above definition, which may be present in combination with complex-forming compounds according to the above definition, where the complexing-fonning compound preferably constitutes at least 3 percent especially at least 10 percent by weight of the total preparation,

0 to 5 percent preferably 2 to percent by weight of other washing agent constituents such as, for example, dirt carriers, optical brighteners, enzymes, perfumes, dyestuffs, water.

When the preparations according to the invention have been prepared by spray drying, they usually contain not more than percent by weight and preferably not more than 20 percent by weight of water. If, however, the preparations have been converted into a solid state from an aqueous, paste-like starting composition by tying up the liquid water, then the water content may amount to up to 50 percent.

The washing agents and washing adjuvants according to the invention may further contain bleaching components, which, including activators and/or stabilizers for the per-compound present, then constitute 10 to 50 percent, preferably l5 to 35 percent by weight of the total washing agent. The bleaching component is generally present in an amount such that its content, calculated as active oxygen, amounts to l to 4 percent, preferably 1.5 to 3.5 percent by weight. Provided these bleaching agents or the substances formed therefrom after the release of the active oxygen have an alkaline reaction, they are to be regarded as alkaline builders for purposes of calculation of the ingredients of the preparations of the invention.

In the washing agents, the total amount of alkaline-reacting builders and complex-forming compound possibly present is preferably 0.5 to 7 times, and especially 1 to 5 times the total amount of the combined surface-active components present.

The cleaning agents according to the invention may also contain mechanical cleaning substances, the latter usually being present in amounts of at least percent by weight, preferably 50 to 98 percent and especially 75 to 95 percent by weight. Suitable mechanical cleaning substances are preferably fine powders of mostly water-insoluble substances, as for example, quartz flour, marble dust, ground pumice and so forth. The remainder (not more than 70 percent, preferably 50 to 2 percent and especially 25 to 5 percent by weight) consists of the greater part of water-soluble components of the composition according to the invention. Owing to this, the concentration of the antimicrobial compounds referred to the total product may be relatively small. However, since these products, especially the much used scouring agents, are moistened during their use with only a little water, an entirely adequate concentration of active substances is obtained in spite of the small content of active substances.

The optionally present anionic, amphoteric or nonionic surface-active compounds in the products according to the invention contain in the molecule at least one hydrophobic residue of eight to 26, preferably 10 to 20 and especially 12 to 18 carbon atoms and an anionic, non-ionic or amphoteric watersolubilizing group. The preferably saturated hydrophobic residue is usually aliphatic or alicyclic, and it may be connected directly with the water-solubilizing groups or via intermediate members. Suitable intermediate members are benzene rings, carboxylic acid ester or carbon-amide groups, residues of polyhydric alcohols linked in ether or ester form, as for example those of ethylene glycol, propylene glycol, glycerine or corresponding polyether residues.

The hydrophobic residue is preferably an aliphatic hydrocarbon residue with 10 to 18 carbon atoms, but deviations from this preferred range of carbons are possible, depending on the nature of the respectivesurface-active compound.

Soaps derived from natural or synthetic fatty acids, possibly also from resin or naphthenic acids, are utilizable as anionic detergents. Fatty, resin or naphthenic acids of natural origin are often more or less unsaturated. They are preferably used in a partly or completely hydrogenated state, so that they have iodine values of not more than 30 and preferably of less than 10.

Of the synthetic anionic surface-active compounds the sulfonates and sulfates have special practical importance.

Examples of the sulfonates are the alkylarylsulfonates, especially the alkylbenzenesulfonates, which are obtained from preferably straight-chain aliphatic hydrocarbons with nine to 15, preferably 10 to 14 carbon atoms, by chlorinating and alkylating benzene or from corresponding olefins with terminal or non-terminal double bonds by alkylating of benzene. and sulfonating the alkylbenzenes obtained. Furthermore, aliphatic sulfonates are of interest such as are obtainable from preferably saturated hydrocarbons containing eight to 18 and preferably 12 to 18 carbon atoms in the molecule by sulfochlorinating with sulfur dioxide and chlorine or sulfoxidating with sulfur dioxide and oxygen and conversion of the products thereby obtained into the sulfonates. Further, mixtures of alkene-sulfonates, hydroxyalkene-sulfonates and hydroxyalkane-sulfonates are useful as the aliphatic sulfonates, which are obtained, for example, from terminal or non-terminal, C,,C and preferably C, C, olefins by sulfonation with sulfur trioxide and acid or alkaline hydrolysis of the sulfonation products. In the aliphatic sulfonates thus prepared, the sulfonate group is frequently attached to a secondary carbon atom. Sulfonates with a terminal sulfonate group can also be prepared, however, by reacting terminal olefins with bisulfite.

The sulfonates to be used according to the invention also include salts, preferably di-alkali metal salts of a-sulfo-fatty acids, and also salts of esters of these acids with monoor poly-hydric alcohols containing one to four and preferably one to two carbon atoms.

Further useful sulfonates are the fatty acid esters of oxethanesulfonic acid and dihydroxypropanesulfonic acid, the fatty alcohol esters of lower aliphatic or aromatic sulfomonoand-di-carboxylic acids containing one to eight carbon atoms, the alkylglycerylether-sulfonates and the condensation products of fatty acids or sulfonic acids with aminoethanesulfonic acid.

Surface-active compounds of the sulfate type include fatty alcohol sulfates, especially those from coconut fatty alcohols, tallow fatty alcohols or oleyl alcohol. Useful sulfonation products of the sulfate type can also be made from terminal or non-terminal C -C, olefins. Further, belonging to this group of surface-active compounds are sulfated fatty acid alkylolamides, sulfated monoglycerides and sulfation products of ethoxylated and/or propoxylated fatty alcohols, alkylphenols with eight to 15 carbon atoms in the alkyl residue, fatty acid amides, fatty acid alkylolamides and so forth, in which case 0.5 to 20, preferably 1 to 8, and advantageously 2 to 4 mols of ethylene oxide and/or propylene oxide may be added to one mol of the said compounds to be ethoxylated and/or propoxylated.

The washing agents according to the invention may also contain surface-active synthetic carboxylates, for example, the fatty acid esters or fatty alcohol ethers of hydroxycarboxylic acids and the condensation products of fatty acids or sulfonic acids with aminocarboxylic acids, for example with glycocoll, sarcosine or protein hydrolysates.

The non-ionic surface-active compounds, here for simplicity called Non-ionics, include products which owe their solubility in water to the presence of polyether chains, amineoxide, sulfoxide or phosphineoxide groups, alkylolamide groups and very generally to an accumulation of hydroxyl groups.

The products obtainable by the addition of ethylene oxide and/or glycide to fatty alcohols, alkylphenols, fatty acids, fatty amines, fatty acid and sulfonic acid amides, are of particular practical interest, and these non-ionics may contain 4 to 100, preferably 6 to 40, and especially 8 to 20 ether oxygens, particularly ethylene glycol ether oxygens, per molecule. Moreover, propylene or butylene glycol ether oxygens may be present in and/or at the end of these polyglycol ethers.

Further, the non-ionics include the water-insoluble polypropylene glycols which have been made water-soluble by addition of ethylene oxide and are known by the trade names of Pluronics, Tetronics and Ucon Fluid, and also addition productsof propylene oxide to alkylenediarnines or lower aliphatic alcohols containing one to eight and preferably three to six carbon atoms.

Further useful non-ionics are fatty acid or sulfonic acid alkylolamides, which are derived, for example, from monoor di-alkylolamines, dihydroxypropylamine or other polyhydroxyalkylamines, for example the glycamines. They can be replaced by amides of higher primary or secondary alkylamines and polyhydroxycarboxylic acids.

From the group of amineoxides, the non-ionics derived from higher tertiary amines having a hydrophobic alkyl residue and two shorter alkyl and/or alkylol residues each containing up to four carbon atoms are of special interest.

Amphoteric or zwitterion surface-active compounds contain at least one acid or at least one basic hydrophilic group in the molecule. The acid groups include carboxyl, sulfonic acid, sulfuric acid half ester, phosphonic acid and phosphoric acid partial ester groups. Suitable basic groups are primary, secondary, tertiary and quaternary ammonium groups.

Carboxy-, sulfateand sulfonate-betaines, owing to their good compatibility with other surface-active compounds, have special interest in practice. Suitable sulfobetaines are obtained, for example, by reacting tertiary amines containing at least onehydrophobic alkyl residue with sultones, for example propane or butane-sultone. Corresponding carboxybetaines are obtained byv reacting the said tertiary amines with chloracetic acid, its salts or chloracetic acid esters, and splitting of the ester linkage.

The foaming power of the surface-active compounds used can be increased or reduced by a combination of suitable surface-active compounds, and the foaming power can of course also be changed by additions of compounds other than surface-active compounds.

The above mentioned non-ionics of the alkylolamide type are known to be suitable as foam stabilizers. Fatty alcohols or higher alkane terminal diols are also utilizable for this purpose.

The foaming power of synthetic anionic or non-ionic surface-active compounds can bereduced by addition of soaps, and with certain combinations of synthetic anionic surface-active compounds, non-ionics and soap, the foaming power is still more greatly reduced. Further, the products of addition of propylene oxide to the above-described surface-active polyethylene glycol ethers are marked by a small foaming capacity, while by varying the number of ethylene glycol and propylene glycol residues present in the molecule, products with a'wide variety of turbidity points can be made. These non-ionics act as foam inhibitors on other non-ionics at temperatures above their turbidity point. They can also be combined with other surface-active compounds or mixtures of different surface-active compounds.

Mixtures of anionic surface-active compounds, especially those of the sulfonate and/or sulfate type, non-ionic surfaceactive compounds and soaps have attained great practical importance, and the foaming tendencies of such combinations may be varied by the choice of the soap. .If, for example, these soaps contain 12 to 18 carbon atoms in the fatty acid residue, the mixtures of surface-active compounds showa certain inhibition of foaming, which however is often not sufficient when the washing agents are to be used in drum washing machines at temperatures from 60 to 100 C. In such cases a powerful repression of foaming of synthetic anionic, amphoteric and non-ionic surface-active compounds is obtained by soaps of fatty acid mixtures with 20 to 30, preferably 20 to 26 carbon atoms.

The surface-active compounds, however, may also be combined with known foam inhibitors which are not surface-active. These include N-alkylated aminotriazines, possibly containing chlorine, which are obtained by reacting 1 mol of cyanuric chloride with 2 to 3 moles of a monoand/or di-al kylarnine with 6 to 20, preferably 8 to 18 carbon atoms in the alkyl residue. Paraffins, halogenated paraffins and aliphatic C. to C ketones, can also be used as foam inhibitors, especially in combination with soaps.

By choice of suitable foam inhibitors, it can be arranged that the foam-repressing action does not start until a specified temperature has been exceeded, so that washing agents can be made which still foam in the middle range of temperature up to, for example, 65 C., but which produce less and less foam as the temperature is increased beyond this point. Foam stabilizers and foam inhibitors dependent on temperature can even be combined together.

To the above-defined alkaline-reacting builders belong, preferably, the usual, alkaline-reacting constituents of washing and cleaning agents and washing adjuvants, as well as the complex-forming compounds acting synergistically with the antimicrobial substances. The components according to the invention may also contain neutral-reacting salts in addition to these constituents. Suchsalts are enumerated below essentially according to their chemical nature, without anything being said as to whether they belong to the weaker or stronger complex-forming compounds defined above or to the alkaline builders.

According to the invention, useful, neutral, weakly or more strongly alkaline-reacting salts are,.for example, the bicarbonates, carbonates or silicates of the alkali metals, mono-, dior tri-alkali metal orthophosphates, dior tetra-alkali metal pyrophosphates, alkali metal metaphosphates known as complex-forming compounds, alkali metal sulfates, and the alkali metal salts of organic, non-surface-active sulfonic acids, carboxylic acids and sulfocarboxylic acids containing one to eight carbon atoms. These include, for example, water-soluble salts of benzene-, tolueneor xylenesulfonic acids, water-soluble salts of sulfoacetic acid, sulfobenzoic acid or the salts of sulfodicarboxylic acids, and also the salts of acetic acid, lactic acid, citric acid and tartaric acid.

Higher molecular weight polycarboxylic acids or their water-soluble salts may also be present, especially salts of polymerizates of maleic acid, itaconic acid, mesaconic acid, fumaric acid, aconitic acid, methylene-malonic acid and citraconic acid. Salts of copolymerizates of these acids with one another or with other polymerizable substances, as for example, with ethylene, propylene, acrylic acid, methacrylic acid, crotonic acid, 3-butenecarboxylic acid, 3-methyl-3-butenecarboxylic acid and also with vinylmethylether, vinyl acetate, isobutylene, acrylarnide and styrene are also useful.

Belonging to the organic complex-forming compounds are, for example, nitrilotriacetic acid methylenediaminetetraac etic acid, N-hydroxyethyl-ethylenediaminetriacetic acid, polyalkylene-polyamine-N-polycarboxylic acids and other known organic complex-forming compounds. Combinations of different complex-forming compounds can also be used. Other known complex-forming compounds also include diand polyphosphonic acids of the following constitution:

in whichR represents alkyl and R represents alkylene, both with one to eight, preferably one to four carbon atoms, and X and Y represent hydrogen atoms or alkyl with l to 4 carbon atoms. Carboxy-methylenephosphonic acid, (HOOC-Cl-i PO( OH is also utilizable, as a complex-forming compound according to the invention. All these complex-forming compounds may be present as the free acids, but it is preferred to use them as the alkali metal salts.

The following TABLE I contains data on theability to form complexes of various compounds determined by the Hampshire test. The operation of the Hampshire test is described in the Examples.

TABLE I Calcium carbo- Complex forming compound mate 1 Iiydroxymethylphosphonic acid. 1 Mesoxalic acid monohydrate 6 l-cysteine hydrochloride monohydrate 14 Glycollic acid... 45 Tetrascdium pyrophosphate 125 n-Hexylaminodimethylenephosphonic acid 160 Sodium tripolyphosphate 214 Hexamethylenediaminetetramethylenephosphonic acid. 220 l-hydroxyhexaned, l-diphosphonic acid 280 a-Aminoethane-a, a-diphosphonic acid... 930 rz-Aminobenzyl-a, ardiphosphonic acid... 1, 460 Aminotrimethylenephosphonlc acid 820 Ethylenediaminetetramethylenephosphonic aci 860 Amlnodimethylene hosphonic acid-N-acetlc acid. 850 Iminodiaceticacid- '-methy1enephosphonlc acid 540 Hydroxyethanediphosphonic acid 810 Phosphonoacetic acid 270 Citric acid 328 Diethylcnctriaminepentaacetic acid. 275 1, Z-cyclohexanediaminetetraacetic acid 285 Ethylenediaminetctmacetic acid 402 N itrilotriacetic acid 578 (I3 O H (I? O 0 H -CHNHCH CH;-NHCH 250 I OH OH Technical mixture 0! various metaphosphate (Grahams sa1t) 500 1 Binding capacity in mgJg. of complex-forming compound.

Among the bleaching components to be used, compounds witha neutral'or alkaline reactionin aqueous solution, especially the perborates, have most practical interest. Of the various perborates, sodium perborate tetrahydrate (NaBO 'H O 2-3H O is of great practical importance. Partly or completely dehydrated perborates, i.e.. up to the approximate composition NaBO2-H O2, may also be used in-its place.

Finally, borates containing active. oxygen. NaBO2-H O' are also useful in which the ratio Na O B20 is less than 0.5 to l and lies preferably in the range from 0.4-0.1.5 to l, and in which the ratio l-lzozzNa lies in the range of 0.5-4

to I. These products are described in the German Pat. No. -90l,287 and in, the U.S. Pat. No. 2,49l,789.

The perborate may be wholly or partly replaced by other inorganic percompounds, especially by peroxyhydrates, as for example, the peroxyhydrates of ortho-, pyroor polyphosphatesand carbonates.

The washing and cleaning agents and washing adjuvants according to the invention may contain up to 10 percent preferably from 0.5 to 8 percent by weight of the usual waterinsoluble or water-soluble stabilizers for percompounds.

Suitable water-soluble percompound stabilizers are the various magnesium silicates. Precipitation products which are formed on bringing together aqueous solutions of alkali metal silicates with solutions of magnesium salts are mostly concerned here. The proportion MgO SiO may lie in the range offrom 4: l to l 4, preferably from 2 l to l 2. A product with a proportion of MgO SiO of l l is frequently used. These magnesium silicates may be replaced by the corresponding silicates of other alkaline earth metals, cadmium or tin. Water-containing tin oxides are also useful as stabilizers. These stabilizers are usually present in amounts from i to 8 percent, preferably 2 to 7 percent of the weight of the total preparation.

The water-insoluble percompound stabilizers may be wholly or partly replaced by water-soluble substances. As such are suitable, above all, the above-enumerated substances with a complex-forming capacity above 230 mg of CaCO per gram. Provided these are only to stabilize the active oxygen and/or the brightener, without a simultaneous synergistic action with the antimicrobial substances being produced, they may be present in amounts from 0.1 to 5 percent preferably from 0.2 to 2.5 percent of the weight of the total preparation, depending on the stability of the formed complexes.

The active chlorine compounds utilizable according to the invention may be inorganic or organic.

The inorganic active chlorine compounds include alkali metal hypochlorites, which can be used especially in the form of their mixed salts or addition compounds with orthophosphates or condensed phosphates such as, for example, pyroand poly-phosphates or with alkali metal silicates. if the washing agents and adjuvants contain monopersulfates and chlorides, active chlorine is formed in aqueous solution.

Specially suitable organic active chlorine compounds are the N-chloro compounds, in whichone or two chlorine atoms are linked to a nitrogen atom, the third valency of the nitrogen atom preferably being satisfied with a negative group, especially a CO or 80,. group. These compounds include dichloroand trichloro-cyanuric acid, chlorinated alkylguanides orv alkylbiguanides, chlorinated hydantoins and chlorinated melamines.

proteolytic nature; Further useful enzymes are pepsin, pancreatin, trypsin, papain and diastase.

Theantimicrobial substances to be used according to the invention have the specialadvantage of being inert towards optical brighteners, which may be contained chiefly in washing adjuvants. In. contrast to many known, highly effective antimicrobic compounds, the nitroalkyl-N-phenylcarbamates of Formula I have a good skin compatibility'and little toxicity so that in the event of unintended oral administration ashas been observed with liquidwashing agents for example, no detriment to health is to be expected.

Examples of optical. brighteners from the class of diaminostilbenesulfonic acid derivatives are compounds of the following formula:

X and may signify, for example, NH,,NI- ICH,,

| I cm-N-cm-cmorr, N (CHr-CHaOHh,

morpholino, dimethyl-morpholino, Nn-',H,, -NH- CIHISO if-H a 9 or. different.

. Further, optical according to the following formula may be present:

Cl, and X and Y may be the same .kr'C CH 'bn'n N In this formula R-signifies a hydrogen atom, an alkyl or aryl residue, which may possible be substituted, Ar and Ar signify aryl residues such as phenyl, diphenyl or naphthyl, which may.

carry further substituents such as hydroxy, alkoxy, hydroxyalkyl, amino, alkylamino, acylamino, carboxyl, sulfonic acid and sulfonamide groups orhalogen atoms.

Dirt carriers may also be contained in the preparations of the invention, which keepthe'dirt, detached from the fibers, suspended in the liquor, and thus prevent graying. Water-soluble colloids of mostly organic'nature are suitable for this pur pose, such as,-fo'r example, the water-soluble salts of polymeric carboxylic acids, glue, gelatine, salts of ethercarboxylic acids or ether'sulfonic acids of starch or of cellulose, or salts of acid sulfuric acid esters of cellulose or of starch. Water-soluble polyamides containing acid groups are also suitable for this purpose. Further, starch and other than the above mentioned starch products can be used, such as degraded starch, aldehyde starches and so on. Polyvinylpyrrolidone is also useful.

EXAMPLES The following examples describe the compositions of some preparations according to the invention. They are not to be deemed to be limitative in any respect, however. i

The salt-like components contained therein, such as saltlike surface-active compounds, other organic salts as well as inorganic salts are present as the sodium salts, unless otherwise stated. The names or abbreviations utilized are defined as follows: i

ABS" is the alkali metal salt of an alkylbenzene-sulfonic acid with 10 to 15, preferably 11 to 13 carbon atoms in the alkyl chain, obtained by condensing straight-chain olefins with benzene and sulfonating the alkylbenzene thus formed. v

Alkanesulfonate" is an alkali metal sulfonate obtained from paraffins with 12 to 1 6 carbon .atoms by sulfoxidation. J

"Fs-estersulfonate" is an alkali metal sulfonate obtained from the methylester of a hardened'tallow fatty acid by sulfonating with S0,. Olefinsulfonate" is an alkali metal sulfonate obtained from mixtures of olefms with 12 to 18 carbon atoms on sulfat ing with S0, and hydrolyzing the sulfonation product caustic solution, the sulfonate consists substantially oral;

brightenersof the type of diarylpyrazolines kene sulfonate-and hydroxyalkane sulfonate, but'also' contains, in addition, small amounts of alkane disul fonates. Each olefin sulfonate-containing preparation was prepared using two different types of olefin sulfonates; one was prepared from a mixture of straight-chain terminal olefins, and the other was prepared from a mixture 'of olefins with a non-alpha double bond.

KA-sulfonate" and TA-sulfonate" are the alkali metal salts of sulfated substantially saturated fatty alcohols, prepared by reduction of coconut fatty acid (KA) and tallow fatty acid (TA) respectively.

KA-EO-sulfonate and TA-EO-sulfonate"and CA-EO- sulfonate" are the sulfated. products of addition of 2 moles of ethylene oxide to 1 mol of coconut fatty alcohol (KA), 3 mols of ethylene oxide to 1 mol of tallow fatty alcohol (TA), and 2 mols of ethylene oxide to 1 mol of oleyl alcohol (0A) respectively.

"0A 5E0", "0A 1050" and KA 20 EO"ar'e the products of addition of ethylene oxide (E0) to technical oleyl alcohol (0A) and coconut alcohol (KA), while the numbers represent the molar amount of ethylene oxide added to 1 mol of alcohol. 3

KA 9 E0 12 PO is a non-ionic surface-active agent obtained by reacting 1 mol of KA 9 E0 with 12 mols of propylene oxide.

Perborate" is a product of the approximate composition NaBOgH, -3H Q, containing about 10% of active oxygen.

"NTA," EDTA and EHDPY arethe alkali metal salts of nitrilotriacetic acid, ethylenediaminetetraacetic acid and hydroxyethanediphosphonic acid respectively.

"CMC is the alkali metal salt of carboxymethylcellulose. Y

BW-Brightener l" and "BW-Brightener Il"'are the commercial products Purwil 4 and Blankophor BBH/Sll respectively, preferably specified for use with cotton.

PA-Brightener" is the commercial product Purwil P",

preferably specified for use with polyamides.

PE-Brightener l" and PE-Brightener H are the commer cial products Uvitex 'SOF and Calcofluor white ALF" respectively, preferably specified for use with polyester.

The composition of the fatty acid mixtures, from which the various soaps contained in the products according to the invention were prepared, may be taken from the following TABLEII: I

TABLE II Composition of the fatty acid mixtures corresponding to the soaps Number of by weight of fatty acid carbon atoms component in in the fatty Soap Soap Soap Soap acid l0l8 1222 l222 11,- v 1622 m 1 C 6 l8 l4 c,, s s 6 Cm 28 17 l3 '8 C 60 32 60. 32 C 4 3 12 C 2i 4 48 Iodine value of the fatty 7.5 8 76 4 acid mixture A hibitor used was dissolved in la suitable organic solvent or spayed) in the molten state on I the moving pulverulent "preparation by means of ajet'nozzl If the preparations according to the invention were present as pulverulent products, the antimicrobial substances were incorporated in the same way as described with the foam inhibitors. Foam inhibitors and antimicrobial substances were of course sprayed on successively.

The composition of the preparations according to EXAM- PLES 1 and 12 can be seen from the followingTABLES 111 and IV. The sign in the line Na SO means that small amounts of sodium sulfate were present as impurities in the anionic surface-active compounds. The Roman numerals in the line antimicrobial substance represent the substance present in each case, and in the line below, the amount of the substance is given. In the last line no values are given under Remainderf these can be calculated as the difference between 100 and the amounts of the other components. Of the preparations described, the residue consists to a substantial part of water. If Na- SO is present only in small quantities arising from the synthetic anionic surface-active compound (sign in the Na SO line of the TABLE), the residue also contains the Na S present. Moreover, any dyestufis, perfumes and enzymes present come under the residue.

The following antimicrobial substances were used:

Z-Nitropropyl-N-phenylcarbamate 1-Methyl-2-nitropropyl-N-phenylcarbamate 2-Nitrobutyl-N-phenylcarbamate 2-Bromo-2-nitroethylN-( 3-ch1oropheny1)-carbamate 2-Bromo-2-nitrobutyl-N-(4-nitrophenyl)-carbamate 2-Bromo-2-nitrobutyl-N-phenylcarbamate 2-Bromo-2-nitrobutyl-N-( 3 ,4-dichloropheny1)-carbamate 2-Bromo-2-nitropropy1-N-phenylcarbamate 2-Bromo-2nitrobutyl-N-(p-flourophenyl)-carbamate 2-Bromo-2-nitropropanediol-( l,3)-bis-N-phenylcarbamate 2-Bromo-2-nitropropanediol-( l ,3 )-bis-N-( 3- chlorophenyD-carbamate 2-Bromo-2-nitropropanediol-( l ,3)-bis-N-( 3,4- dichlorophenyl)-carbamate 2-Bromo-2-nitropropanediol-( 1,3)-bis-N-(4- nitrophenyl)-carbamate The products described in the EXAMPLES 1 to 12 can be preferably used for the following purposes:

Example I: Steeping agent or complete washing agent Examples 2-4 All purpose washing agent and 6-9:

Example Washing agent for colored goods free from perborate and brighteners.

Example 10: Washing agent for colored goods free from brighteners, but containing perborate.

Examples 1 1 Fine washing agent: also inand 12: tended for use with easy-care textiles.

All the washing agent described above may be used in drum washing machines even at temperatures of from 90 to 100 C. without foaming over.

TABLE 111 Components of the by wt. of component in the Na P,O, M no... Perborate M gSiO,

NTA

EDTA

EHDP

CMC Antimicrobial substance. Quantity BW-Brightener 1 BW-Brightener ll PA-Brightener PE-Brightener 1 PE-Brightener 11 Residue TABLE IV Percent by weight of component in the preparation according to Example- ABS 8.5

Alkane sulfonate Fsester sulfonate Components of the preparation NP3Om Perborate. MgSiOa.. NT

PE=Brlghtener I PE=Brlghtener I Residue EXAMPLE 13 A liquid washing agent present as a pourable suspen-sion of undissolved components in an aqueous solution had the following composition:

10.0% by weight ABS 8.5% by weight Coconut fatty acid diethanolamide 6.0% by weight potassium toluenesulfonate 20.0% by weight Na,,P ,O,,-, 10.0% by weight 14 1 0,

1.5% by weight CMC 7.6% by weight antimicrobial substance I Remainder water The antimicrobial action of this product is improved when the content of Na P 0 is reduced to 18 to 15 percent by weight and 2 to 5 percent by weight of EDTA or EHDP is incorporated therefore.

EXAMPLE 14 During the usual preparation of a toilet soap from a mixture of 60 percent of coconut fatty acid and 40 percent of tallow fatty acid, there are incorporated in the screw extruder together with the dyestuff and the perfume, such amounts of the antimicrobial F that the finished soap contains 2.5 percent by weight thereof. The action of the antimicrobial substance is further increased when such amount of NTA, EDTA, or EHDP are incorporated that their fraction in the soap is 8 percent by weight.

EXAMPLE 15 As described in Example 14, two washing agent preparations were prepared of the following compositions a and b:

by weight of a l-alkanesulfonate,

prepared from mixture of olefins with terminal double bonds containing 12-18 carbon atoms, by addition of sodium bisulfite. by weight of soap (80% of tallow and 20% of coconut fatty acid) by weight of antimicrobial substance M by weight of NTA, EDTA or EHDP by weight of water EXAMPLE 16 A bottle-washing agent used in the liquor industry had the following composition:

53.0% by weight of commercial sodium hydroxide. 15.0% by weight of tetrapolyphosphate 10.0% by weight of Na,0-3.3Si 12.0% by weight of aminotri-(methylenephosphate) 10.0% by weight of antimicrobial substance K EXAMPLE 17 A washing agent for pre-washing which even at temperatures up to 60 C. makes possible an extensive, if not complete disinfection, had the following composition:

8.0% by weight of ABS, alkanesulfonate or olefinsulfonate 4.0% by weight of Soap 1622 0.3% by weight of foam inhibitor 36.0% by weight of Na P- O 7.5% by weight of NaOH 0.8% by weight of Na SO 24.0% by weight of antimicrobial substance H Remainder water I EXAMPLE 18 An after-rinsing agent for laundered articles, which at the same time dissolves deposits on the fiber, especially lime-containing deposits, had the following composition:

30.0% by weight of perborate I 30.0% by weight of EHDP 2.6% by weight of antimicrobial substance F 29.4% by weight of Na SO 8.0% by weight of NgSiO When articles to be washed are treated in the usual way using the preparations according to EXAMPLES l to 13, and 17 to 18, an antimicrobial action is obtained which is prolonged over the whole time of treatment. If the products contain bleaching components, the antimicrobial action of the active substances used according to the invention is also still present before employment or after conclusion of the action of the bleaching component. If afier-rinsing agents with a content of such antimicrobial substances are used in the last rinsing bath, the small quantities of antimicrobial substance remaining on the fiber also act after the end of the washing process and after the bleaching of the washed textiles.

EXAMPLE 19 A scouring agent with a disinfectant action had the following composition:

95% by weight of quartz flour, finely ground 5% by weight of a fine powder of the following composition:

20% by weight of ABS 35% by weight of Na P 0 10% by weight of N'TA by weight of Na,SO

15% by weight of antimicrobial substance P Remainder water An exact description of the method of analysis for the determination of the calcium carbonate binding capacity is found in the publication of the Hampshire Chemical Corp. of June 1960 Hampshire NTA Technical Bulletin, Appendix S.A2. According to this, exactly 2 g of pulverulent complex-forming compound are dissolved in 50 ml of distilled water. The solution is neutralized, treated with 10 ml of a 2 percent sodium carbonate solution, its pH value adjusted to 11 to 12 and the solution diluted to 100 ml. It is then treated with a calcium acetate solution, which contains 44.1 g of calcium acetate monohydrate per liter, until a distinct and lasting turbidity occurs. The calcium carbonate binding capacity of the complexforming compound is calculated by the formula:

Ml. calcium acetate M Mg of 02.003 bound per gram Weight of complexof complex-forming compound.

forming compound The preceding specific embodiments are illustrative of the practice of the invention. It is to be understood, however, that other expedients known to those skilled in the art may be employed without departing from the spirit of the invention or the scope of the appended claims.

We claim:

1. Antimicrobial washing agent, washing adjuvants and cleaning agent compositions consisting essentially of (a) 0.2 to 30 percent by weight of a nitroalkyl-N-phenyl-carbamate selected from the group consisting of 2-nitropropyl-N-phenylcarbamate, 1-methyl-2-nitropropyl-N-phenylcarbamate, 2- nitrobutyl-N-phenylcarbamate, 2-bromo-2-nitroethyl-N- (3- chlorophenyl)-carbamate, 2-bromo-4-nitrobutyl-N-(4- nitrophenyl)-carbamate, 2-bromo-2-nitrobutyl-N-(3, 4- dichlorophenyl)- carbamate, 2-bromo-2-nitropropyl-N-phenyl-carbamate and 2-bromo-2-nitrobutyl-N-(4-flourophenyl)- carbamate of the formula (b) at least 5 percent by weight of an alkaline builder having calcium carbonate binding capacity in the Hampshire test of not more than 230 mg per gm of builder selected from the group consisting of alkali metal hydroxides, carbonates, bicarbonates, silicates, ortho phosphates, pyrophosphates, tripolyphosphates and sulfates and (c) at least 3 percent by weight of complex-forming compounds which, in the Hampshire test, have a complex-forming ability of over 230 mg of CaCO per gram of said complex -forming compounds selected from the group consisting of Grahams salt, nitrilotriacetic acid, ethylenediaminetetracetic acid, N-

hydroxyethyl-ethylenediaminetriacetic acid, polyalkylene-- polyamine-N-polycarboxylic acids, polyphosphonic acids, carboxymethylenephosphonic acid, aminotrimethylenephosphonic acid, iminodiacetic acid-N- methylene phosphonic acid, phosphonoacetic acid, citric acid and l,2-cyclohexanediaminotetraacetic acid.

2. The antimicrobial compositions of claim 1 wherein the alkaline builder is present in an amount of at least 10 percent by weight.

3. The antimicrobial preparations of claim 1 wherein said antimicrobial component (a) is present in an amount of from 2 to 5 percent by weight.

4. The antimicrobial preparations of claim 1 wherein said complex-forming compounds of (c) are present in an amount of at least 10 percent by weight.

5. The antimicrobial preparations of claim 1 wherein said complex-forming compounds are present in an amount of between 10 to percent of the amount of the mixture of said complex-forming compounds of (c) and said components (b).

6. The antimicrobial preparations of claim 5 wherein said complex-forming compounds are present in an amount of between 25 percent to 75 percent of the amount of the mixture of said complex-forming compounds and said comphenylcnrbamate, 2nitrobutyl-N-phenylcarbamate, 2-bromo- 2-nitroethyl-N- (3-chlorophenyl)-carbamate, 2-bromo-2- nilrobutyl-N-( 4-nitrophenyl )-carbamate, 2-bromo-2-nitrobutyl-N-(3, 4-dichlorophenyl)- carbamate, 2-bromo-2- nitropropyl-N-phenyl-carbamate and 2-bromo-2-nitrobutyl- N-( 4-flourophenyl)-carbamate of the formula (b) from to 90 percent by weight of surface-active compound components comprising from O to 100 percent of surface-active compounds selected from the group consisting of 15 sulfates and sulfonates said compounds having a hydrophobic residue of from eight to 18 carbon atoms from O to 100 percent of non-ionic surface-active compounds, from 0 to 100 percent of soap (c) from 5 to 99 percent by weight of water soluble components comprising from to 90 percent by weight of component (c) of alkaline reacting builders which, in the Hampshire test, have a complex-forming ability of not more than 230 mg of CaCO per gram selected from the group consisting of alkali metal hydroxides, carbonates, bicarbonates, silicates, orthophosphates, pyrophosphates, tripolyphosphates and sulfates and from 90 to 10 percent by weight of component (c) of complex-forming compounds which, in the Hampshire test, have a complex-forming ability of over 230 mg of CaCO per gram selected from the group consisting of Grahams salt, nitrilotriacetic acid, ethylenediaminetetraacetic acid, N-hydroxyethylethylenediaminetriacetic acid, polyalkylene-polyamine-N- polycarboxylic acids, polyphosphonic acids, carbogrymethylenephosphomc acid, aminotnmethylenephosphomc acid, iminodiacetic acid-N-methylenephosphonic acid, phosphonoacetic acid, citric acid and l,2-cyclohexanediaminotetraacetic acid.

9. The antimicrobial preparations of claim 9 wherein the compositions also contain from 10 to 50 percent by weight of inorganic per-compounds.

10. The antimicrobial preparations of claim 8 wherein said component (b) comprises from 75 to 90 percent by weight.

11. The antimicrobial preparations of claim 8 wherein said antimicrobial component is 2-nitropropyl-N-phenylcarbamate.

12. The antimicrobial preparations of claim 8 wherein said antimicrobial component is l-methyl-2-nitropropyl-N-phenylcarbamate.

13. The antimicrobial preparations of claim 8 wherein said antimicrobial component is 2-nitrobutyl-N-phenylcarbamate.

14. The antimicrobial preparations of claim 8 wherein said antimicrobial component is 2-bromo-2-nitroethyl-N-( 3- chlorophenyl)-carbamate.

15. The antimicrobial preparations of claim 8 wherein said antimicrobial component is 2-bromo-4-nitrobutyl-N-(4- nitrophenyl)-carbamate.

16. The antimicrobial preparations of claim 8 wherein said antimicrobial component is 2-bromo-2-nitrobutyl-N-phenylcarbamate.

17 The antimicrobial preparations of claim 8 wherein said antimicrobial component is 2-bromo-2-nitrobutyl-N-(3,4- dichlorophenyl)-carbamate.

18. The antimicrobial preparations of claim 8 wherein said antimicrobial component is 2-bromo2-nitropropyl-N-phenylcarbamate.

19. The antimicrobial preparations of claim 8 wherein said antimicrobial component is 2-bromo-2 -nitrobutyl-N-(4-flourophenyl)-carbamate.

20. Pasty and liquid washing and washing adjuvants comprising from 10 to 60 percent by weight of the antimicrobial preparations of claim 8 and from 40 to percent by weight of a liquid solvent selected from the group consisting of water, water-soluble organic solvents and mixtures thereof.

PM 050 UNITEb S'IA'IES PATENT OFFICE CERTIFICATE OF CORRECTION 5 5 f 3 Patent No. 3 668 135. Dated June 6, 1972 HEINZ GUNTHER NOSLER, RICHARD WESSENDORF,

In ventor(s) a d HORST EL I ER It is certified that error appears in the above-identified patent and that: said Letters Patent are hereby corrected as shown below:

Col. Line Page Line Formula Formula 2 I 5 I be 7 Q v R C-X I v 1 oz No NH-C-O-CH-C-X R z" y 2 5 5 .9 V I V should be "Q 'n 3 60 a 6 "so, so" should be so on 32 9 23 -bI omo-2--' should be I 2-bromo-2-- 4 37 8c 38 Cancel "nitropropyl-hb-(R-nitro. e L. Y phenykerbamate, l-methjrl-Q- .J

bromo-Q E33? UNITED S'l'A'lES PATENT 01mm; 3607 CERTIFICA'IE 01 CORRECTION Page 2 3 Patent NO. Dated June HEINZ GUNTHER NOSLER, RICHARD WESSENDORF, Inventofls) and HORST BELLINGER It'is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected, as shown below:

Col. Line Page Line 5 43 10 4 7 Please insert --2-b romo-2-- 5 14 11 2o "o to 5 percent" should be --O 1:050 percent-- 8 69 21 I l "methylen'ediaminetetraacetic" e should be --ethy1ened1aminetetraacetic-- v I n O u 12 25 g8 18 NaBO .H b8 2.311 0 should be --NaBQ .H O .3H 0- e 13 7 3o 18 "Examples. 1 and 12" should be e Examples 1 to l2-'-- Table Table 1 I 13 III 3? 111 First 001. ."Na O.3S1O should be --Na O.3.3SiO 14 32 3rd col. "0.05" should be 15 41 37 12 "8.0% by weight of N s1o sho ul'dbe --8.0%"by weight of MgSiO3- 25 7;3 UNITED STATES PA ENT 0mg CERTIFICATE OF CGRRECTIQN Page 3 3 Patent No. 668 135 I Dated June 69 1972 H NZ GUNTHER NOSLEB, RICHARD WESSENDORF,

and HORST BELLINGER Invent0r(s) It is certified that error appears in the at ov eider1tified patent and that siid Letters Patent are hereby corrected as shown below:

INTHE CLAIMS Claim I "of the formula n T 1 I n v x J 1 Y 7 v 001. Line 16 43 of the formula.

"ethylenediamineteti' acetic" should be ---=-ethylenediaminetetraacetiwfilaim 8 l0 of the formula i! Y -C-O-CH" I Cancel n I R Claim 9 1 "of claim 9" should, be -=-of claim 8- Signed and sealed this 5th day of December 1972.

(SEAL) Attest:

EDWARD M.FLliiT( 3HER,-JR. ROBERT GOTTSCHALK Attestlng offlcer' Commissioner of Patents

Claims (19)

1. 2. The antimicrobial compositions of claim 1 wherein the alkaline builder is present in an amount of at least 10 percent by weight.
2. 3. The antimicrobial preparations of claim 1 wherein said antimicrobial component (a) is present in an amount of from 2 to 5 percent by weight.
3. 4. The antimicrobial preparations of claim 1 wherein said complex-forming compounds of (c) are present in an amount of at least 10 percent by weight.
4. 5. The antimicrobial preparations of claim 1 wherein said complex-forming compounds are present in an amount of between 10 to 90 percent of the amount of the mixture of said complex-forming compounds of (c) and said components (b).
5. 6. The antimicrobial preparations of claim 5 wherein said complex-forming compounds are present in an amount of between 25 percent to 75 percent of the amount of the mixture of said complex-forming compounds and said components (b).
6. 7. The antimicrobial composition of claim 1 containing at least 30 percent by weight of a powder of a water-insoluble cleaning substance.
7. 8. Antimicrobial washing agents and washing adjuvant and cleaning agent preparations comprising (a) from 0.2 to 30 percent by weight of a nitroalkyl-N-phenylcarbamate antimicrobial component selected from the group consisting of 2-nitropropyl-N-phenylcarbamate, 1-methyl-2-nitropropyl-N-phenylcarbamate, 2nitrobutyl-N-phenylcarbamate, 2-bromo-2-nitroethyl-N- (3-chlorophenyl)-carbamate, 2-bromo-2-nitrobutyl-N-(4-nitrophenyl)-carbamate, 2-bromo-2-nitrobutyl-N-(3, 4-dichlorophenyl)-carbamate, 2-bromo-2-nitropropyl-N-phenyl-carbamate and 2-bromo-2-nitrobutyl-N-(4-flourophenyl)-carbamate of the formula 1 (b) from 0 to 90 percent by weight of surface-active compound components comprising from 0 to 100 percent of surface-active compounds selected from the group consisting of sulfates and sulfonates said compounds having a hydrophobic residue of from eight to 18 carbon atoms from 0 to 100 percent of non-ionic surface-active compounds, from 0 to 100 percent of soap (c) from 5 to 99 percent by weight of water soluble components comprising from 10 to 90 percent by weight of component (c) of alkaline reacting builders which, in the Hampshire test, have a complex-forming ability of not more than 230 mg of CaCO3 per gram selected from the group consisting of alkali metal hydroxides, carbonates, bicarbonates, silicates, orthophosphates, pyrophosphates, tripolyphosphates and sulfates and from 90 to 10 percent by weight of component (c) of complex-forming compounds which, in the Hampshire test, have a complex-forming ability of over 230 mg of CaCO3 per gram selected from the group consisting of Graham''s salt, nitrilotriacetic acid, ethylenediaminetetraacetic acid, N-hydroxyethyl-ethylenediaminetriacetic acid, polyalkylene-polyamine-N-polycarboxylic acids, polyphosphonic acids, carboxymethylenephosphonic acid, aminotrimethylenephosphonic acid, iminodiacetic acid-N-methylenephosphonic acid, phosphonoacetic acid, citric acid and 1,2-cyclohexanediaminotetraacetic acid.
8. 9. The antimicrobial preparations of claim 9 wherein the compositions also contain from 10 to 50 percent by weight of inorganic per-compounds.
9. 10. The antimicrobial preparations of claim 8 wherein said component (b) comprises from 75 to 90 percent by weight.
10. 11. The antimicrobial preparations of claim 8 wherein said antimicrobial component is 2-nitropropyl-N-phenylcarbamate.
11. 12. The antimicrobial preparations of claim 8 wherein said antimicrobial component is 1-methyl-2-nitropropyl-N-phenylcarbamate.
12. 13. The antimicrobial preparations of claim 8 wherein said antimicrobial component is 2-nitrobutyl-N-phenylcarbamate.
13. 14. The antimicrobial preparations of claim 8 wherein said antimicrobial component is 2-bromo-2-nitroethyl-N-(3-chlorophenyl)-carbamate.
14. 15. The antimicrobial preparations of claim 8 wherein said antimicrobial component is 2-bromo-4-nitrobutyl-N-(4-nitrophenyl)-carbamate.
15. 16. The antimicrobial preparations of claim 8 wherein said antimicrobial component is 2-bromo-2-nitrobutyl-N-phenylcarbamate.
16. 17. The antimicrobial preparations of claim 8 wherein said antimicrobial component is 2-bromo-2-nitrobutyl-N-(3,4-dichlorophenyl)-carbamate.
17. 18. The antimicrobial preparations of claim 8 wherein said antimicrobial component is 2-bromo-2-nitropropyl-N-phenylcarbamate.
18. 19. The antimicrobial preparations of claim 8 wherein said antimicrobial component is 2-bromo-2 -nitrobutyl-N-(4-flourophenyl)-carbamate.
19. 20. Pasty and liquid washing and washing adjuvants comprising from 10 to 60 percent by weight of the antimicrobial preparations of claim 8 and from 40 to 90 percent by weight of a liquid solvent selected from the group consisting of water, water-soluble organic solvents and mixtures thereof.