JP2007197667A - Softening detergent composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a softening detergent composition which can soften a fabric in addition to clean the fabric and clay minerals are less prone to remaining on the fabric. <P>SOLUTION: A softening detergent composition comprises (a) 1 to 20% by mass of a granulated clay containing, as the main component, a smectite clay mineral represented by the general formula (I) (with the proviso that the mass ratio of the Na/Ca in the granulated clay is less than 1.0): [Si<SB>8</SB>(Mg<SB>a</SB>Al<SB>b</SB>)O<SB>20</SB>(OH)<SB>4</SB>]<SP>X-</SP>×X/n[Me]<SP>n+</SP>(I) (wherein 0<a≤6, 0≤b≤4, 0.2≤x=12-2a-3b≤1.2; Me is at least one member selected from among Na, K, Li, Ca, Mg, and NH<SB>4</SB>; and n is the valency of Me), (b) 1.0 to 18% by mass of a nonionic surfactant, (c) 6 to 27% by mass of an anionic surfactant (except fatty acid salts), (d) 10 to 35% by mass of an alkali agent (with the proviso that the content of silicates in the softening detergent composition is 6% by mass or below), and (e) 3 to 35% by mass of a crystalline aluminosilicate. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a soft detergent composition using a clay mineral as a softening base.

  Conventionally, it has been studied to add a softening agent to the detergent to prevent the textile product after washing from losing its softness due to dropping off of the fiber treatment agent or adhesion of salts, etc. Has been. For example, as a softening agent that is deposited on the fiber surface and imparts flexibility to the texture of the fiber product, conventionally, a clay mineral such as smectite (see, for example, Patent Document 1), a cation such as a dialkyl type quaternary ammonium salt Incorporation of a surfactant (for example, see Non-Patent Document 1), silicone such as polydimethylsiloxane (for example, see Patent Document 2), and the like is known. In recent years, methods for enhancing the softening effect with clay minerals have been studied from the viewpoint of ease of blending and environmental response. For example, a combination of bentonite and a pentaerythritol compound (for example, see Patent Document 3), a combination of a clay mineral and a flocculant (for example, see Patent Document 4), a combination of bentonite and a soluble potassium salt (for example, Patent Document 5, Non-Patent Document 1) is known. In addition, it is known that so-called Ca-type bentonite has higher flexibility than Na-type bentonite.

  On the other hand, recent trends in washing machines, such as lowering the temperature of washing water and shortening operation time, based on environmental and energy issues and economic considerations, are all related to the dispersion rate of clay granules such as smectite. There is an increasing concern that undispersed particles of clay minerals remain on clothing, which is a factor in delay.

In recent years, nonionic surfactants have been added as main surfactants as part of the enhancement of detergency, particularly detergency against oil stains. However, as a result of intensive studies by the present inventors, when a nonionic surfactant is present in a detergent containing a Ca-type bentonite granule, the dispersibility of the clay granule tends to be remarkably lowered. Similar to the trend of washing machines, the combination of a nonionic surfactant and a combination of Ca-type bentonite has led to the finding that clay granulates remain in clothing.

JP-A-49-85102 JP 2002-249799 A Japanese Patent Laid-Open No. 5-140869 Special Table 2002-541342 Japanese National Patent Publication No. 8-506843 Collection of well-known and commonly used technologies (powder detergent for clothing), published 1998..3.26

  It is an object of the present invention to provide a soft detergent composition that uses a soft detergent composition to wash flexible textiles and the like, and at the same time, clay minerals hardly remain in clothing.

That is, the gist of the present invention is as follows.
(A) Clay granulation mainly composed of smectite type clay mineral represented by the following general formula (I) (however, the mass ratio of Na / Ca in the granulation is less than 1.0) 1 to 20% by mass
_{[Si 8 (Mg a Al b} ) O 20 (OH) 4] X- · X / n [Me] n + (I)
(In the formula, 0 <a ≦ 6, 0 ≦ b ≦ 4, 0.2 ≦ x = 12-2a-3b ≦ 1.2, and Me is Na, K, Li, Ca , Mg And at least one of NH ₄ , n represents the valence of Me),
(B) 1.0-18% by mass of a nonionic surfactant,
(C) Anionic surfactant (excluding fatty acid salts) 6 to 27% by mass,
(D) Alkali agent 10-35 mass% (however, silicate content is 6 mass% or less in the soft detergent composition), and (e) crystalline aluminosilicate 3-35 mass%,
A soft detergent composition comprising the following conditions (i) to (ii):
(I) Na in the clay granulated product is 1.0% by mass or more,
(Ii) Contains a water-soluble Na salt and / or K salt corresponding to 23% by mass or more when converted to Na ₂ O or K ₂ O in the soft detergent composition (including water-soluble Na salt and K salt) If the total amount is 23% by mass or more)
A soft detergent composition characterized by satisfying at least one of
About.

  By using the soft detergent composition of the present invention, it is possible to wash flexible textiles and the like, and there is an effect that clay minerals hardly remain in clothing.

-Soft detergent composition Hereinafter, the soft detergent composition of the present invention will be described in more detail.
<(A) component>
The component (a) of the soft detergent composition of the present invention contains a smectite-type clay mineral represented by the following general formula (I) as a main component (in this application, the main component refers to one containing 50% by mass or more in the granulated product. ) Clay granule (however, the mass ratio of Na / Ca in the granule is less than 1.0).
_{[Si 8 (Mg a Al b} ) O 20 (OH) 4] X- · X / n [Me] n + (I)
(Where 0 <a ≦ 6, 0 ≦ b ≦ 4, 0.2 ≦ x = 12-2a-3b ≦ 1.2, preferably 0 <a <6, 0 <b <4, 0. 2 ≦ x = 12-2a-3b ≦ 1.2, and Me is Na, K, Li, Ca , Mg And at least one of NH ₄ , n represents the valence of Me)

  In terms of softness and washing performance, the content of the component (a) in the soft detergent composition is 1 to 20% by weight, preferably 2 to 20% by weight, more preferably 4 to 18% by weight, 6 -16 mass% is further more preferable, 8-15 mass% is still more preferable, and 10-14 mass% is especially preferable.

  Since the clay mineral contains impurities such as quartz, cristobalite, calcite, feldspar, talc, dolomite, etc., when it is natural, the content of the component (a) includes those impurities. In addition, components such as water, binder, and additive provided during granulation are also included in the content of component (a). Therefore, in the clay granule which is the component (a), the fact that the smectite clay mineral of the general formula (I) is the main component means that the smectite clay mineral is 50% by mass or more, preferably 60 to 90% by mass is included.

  In addition, as another embodiment of the present invention, quartz, cristobalite, calcite, feldspar, talc, dolomite, and water which are present as usual impurities in the clay mineral represented by (I) and clay represented by the formula (I) The total amount with the mineral is preferably 90% by mass or more, more preferably 92% by mass or more in the clay granulated product.

The soft detergent composition of the present invention is characterized by increasing the abundance of Na and K from the viewpoint of improving the dispersibility of the clay granulated product and the clothing persistence. That is, (i) Na is preferably 1.0% by mass or more as an amount to be present in the clay granulated product, while (ii) 23% by mass (as an amount to be present in the soft detergent composition) It is preferable to contain a water-soluble Na salt and / or K salt corresponding to the above (when converted as Na ₂ O or K ₂ O) (when water-soluble Na salt and K salt are contained, the total amount is 23 mass) %more than). In the present invention, at least one of the conditions (i) and (ii) is satisfied, and preferably both are satisfied.

  Na in the clay granule being 1.0% by mass or more means a clay granule having an Na of 1.0% by mass or more measured by the following method, and the Na source is in the ore. Examples thereof include those existing in advance and Na salts that can be added in the production process of the clay granulated product. From the viewpoint of dispersibility, Na in the granulated granule is preferably 1.5% by mass or more, more preferably 2.0% by mass or more, and further preferably 3.0% by mass or more. From the viewpoint of flexibility, the amount of Ca of the clay mineral as a starting material is preferably equal to or less. The upper limit is not particularly limited, but is preferably 6.0% by mass or less, and more preferably 5.0% by mass or less from the viewpoint of a decrease in granulation suitability.

  Further, from the viewpoint of improving flexibility, a Ca-type bentonite granule is preferable.

  In another aspect of the present invention, the Ca-type bentonite granule is a clay granule having a mass ratio (Na / Ca) of Ca ions to Na ions in the clay granule of 1.0 or more. Sure.

  Examples of the clay granule mainly composed of the smectite type clay mineral represented by the general formula (I) include “Round rosyl PR414”, “Round rosyl DG”, “Round rosyl DGA212”, Raviossa manufactured by Sud Kemi. “Detasoft GIS”, “Detasoft GIB”, “Detasoft GISW” manufactured by the company, “Quest Soft”, “Pure Bentonite”, “Standard Bentonite”, etc. by CSM, and the like can be mentioned. In addition, the term in angle brackets shows a brand name. These components (a) may be natural products or synthetic products.

  As a method for obtaining a clay granule having a Na / Ca mass ratio of less than 1.0 in a clay granule containing clay mineral used in the present invention and having a large Na amount, May be selected as appropriate, or, for example, when producing a granulated granule, a clay mineral having a large amount of Ca may be used as a starting material, and Na salt or the like may be added. Moreover, if it is a synthetic product, it can be arbitrarily prepared by a known method.

The Na / Ca mass ratio and Na mass% in the clay granule are measured by the following method.
After pulverizing the clay granule in a mortar, 0.1 g of the sample that passed through a sieve with an opening of 125 μm was decomposed with sulfuric acid-hydrogen peroxide using a microwave wet ashing device (automatic), and the volume was increased to 50 mL with a volumetric flask. Then, the amount of Na and Ca is measured and measured with an ICP emission analyzer, and the amount is calculated.

  The bulk density of the clay granulated material is preferably 500 to 1200 g / L, more preferably 600 to 1100 g / L, and particularly preferably 700 to 1050 g / L from the viewpoint of non-classification. Here, the bulk density is measured using a method defined by JIS K 3362. The average particle size of the clay granulated material is preferably 200 to 1000 μm, more preferably 300 to 900 μm, and particularly preferably 400 to 800 μm, from the viewpoint of low dust generation and non-classification. Here, the average particle diameter can be determined from the weight fraction according to the size of the mesh after vibrating for 5 minutes using a standard sieve of JIS Z8801.

  In addition, from the viewpoint of dust generation and appearance, the clay granule having a particle size of 180 to 1410 μm preferably accounts for 90% by mass or more, more preferably 95% by mass or more of the entire clay granule. .

  The moisture value of the clay granulated product is preferably 18% by mass or less, more preferably 16% by mass or less, and still more preferably 14% by mass or less in the clay granulated product from the viewpoint of the particle strength of the clay granulated product.

  The pH of the aqueous dispersion of the clay granulate is measured using a glass electrode method at 20 ° C. and 2% by mass. From the viewpoint of quality control, 9.0 or higher is preferable, 9.5 or higher is more preferable, and 10.0 or higher is still more preferable.

<(B) component>
(B) The nonionic surfactant of a component contains 1.0-18 mass% in this-application soft detergent composition. In terms of softness performance, washing performance, and clothes persistence, the content thereof is preferably 2 to 18% by weight, more preferably 2 to 15% by weight, and further preferably 2.5 to 15% by weight in the soft detergent composition. 3 to 12% by mass is even more preferable, 3.5 to 9% by mass is still more preferable, 4 to 9% by mass is still more preferable, and 4 to 8% by mass is particularly preferable.

  Specific compounds of the component (b) include polyoxyalkylene alkyl (carbon number 8 to 20) ether, alkyl polyglycoside, polyoxyalkylene alkyl (carbon number 8 to 20) phenyl ether, polyoxyalkylene sorbitan fatty acid (carbon (Equation 8-22) ester, polyoxyalkylene glycol fatty acid (carbon number 8-22) ester, polyoxyethylene polyoxypropylene block polymer, etc. can be mentioned. In particular, a polyoxyalkylene alkyl ether in which an alkylene oxide such as ethylene oxide or propylene oxide is added to an alcohol having 10 to 18 carbon atoms is preferable. The average added mole number of alkylene oxide is preferably 4 to 20, more preferably 4 to 16, still more preferably 4 to 12, and particularly preferably 4 to 8 from the viewpoint of improving flexibility. The nonionic surfactant preferably has an HLB value (calculated by the Griffin method) of 10.5 to 15.0, more preferably 11.0 to 14.5.

<(C) component>
The anionic surfactant (excluding the fatty acid salt) as the component (c) is contained in an amount of 6 to 27% by mass in the present soft detergent composition. In terms of softness and washing performance, the content is preferably 10 to 26% by weight, more preferably 12 to 25% by weight, still more preferably 16 to 25% by weight, and more preferably 20 to 25% by weight in the soft detergent composition. Is particularly preferred.

  Specific examples of the component (c) include sulfuric acid ester salts of alcohols having 10 to 18 carbon atoms, sulfuric acid ester salts of alkoxylation products of alcohols having 8 to 20 carbon atoms, alkylbenzene sulfonates, paraffin sulfonates, α -Olefin sulfonate, α-sulfo fatty acid salt, α-sulfo fatty acid alkyl ester salt and the like can be mentioned. In the present invention, it is particularly preferable to contain a linear alkylbenzene sulfonate having 10 to 14 carbon atoms in the alkyl chain, more preferably 12 to 14 or an alkyl sulfate having 10 to 18 carbon atoms in the alkyl chain. As the counter ion, alkali metal salts and amines are preferable, and sodium and / or potassium, monoethanolamine, and diethanolamine are particularly preferable. Further, a mixed system with an alkyl sulfate is more preferable, and the mass ratio of alkylbenzene sulfonate / alkyl sulfate is more preferably 30/1 to 1/1, and particularly preferably 5/1 to 6/5. Further, from the viewpoint of flexibility, the ratio of branched / straight chain of the alkyl group of the alkyl sulfate is preferably 10/90 to 99/1, more preferably 20/80 to 97/3, still more preferably 30/70. ˜95 / 5, particularly preferably 40/60 to 90/10.

<(D) component>
The soft detergent composition of the present invention further contains 10 to 35% by mass of an alkaline agent. Examples of the alkali agent component include (d1) carbonate, (d2) crystalline silicate, (d3) amorphous silicate, and the like. From the viewpoint of detergency, (d1) carbonate is preferably 12 to 30% by mass, and more preferably 15 to 25% by mass. The content of the silicate (crystalline silicate and amorphous silicate), which is the total amount of the component (d2) and the component (d3), is preferably 6% by mass or less in the soft detergent composition from the viewpoint of flexibility. Is 4% by mass or less, more preferably 2% by mass or less. Similarly, the silicate content as the lower limit is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, and further preferably 0.5% by mass or more from the viewpoint of rust prevention.

<(E) component>
The soft detergent composition of the present invention contains 3 to 35% by mass of crystalline aluminosilicate such as zeolite as the component (e). Examples of the component (e) include various zeolites, preferably zeolite having an average particle diameter of 1 to 5 μm. From the viewpoint of detergency and dispersibility of the clay granule, the component (e) is a soft detergent composition. 6-30 mass% is preferable in a thing, and 8-27 mass% is more preferable.

  Moreover, it is preferable that the soft detergent composition of this invention contains a fatty acid salt 0.3-3 mass% further in terms of a softness | flexibility, 0.4-2 mass% is more preferable, 0.5-1 More preferably, 5% by mass.

Examples of fatty acid salts include fatty acids having 10 to 22 carbon atoms. As for carbon number, 10-18 are preferable. As the counter ion, an alkali metal salt such as sodium or potassium is preferable, and a sodium salt is particularly preferable.

<Moisture>
Moreover, it is preferable that a soft detergent composition contains 0.1-10 mass% of water (the water | moisture content by the superheat loss method described in JISK3362: 1998) from the point of stability and productivity. 6 mass% is more preferable, and 0.5-4 mass% is still more preferable.

<Other ingredients>
The soft detergent composition of the present invention comprises a builder (amorphous aluminosilicate, sodium tripolyphosphate, sodium pyrophosphate, organic builder, aminocarboxylate, hydroxyaminocarboxylate known in the field of detergents for clothing. Hydroxycarboxylate, cyclocarboxylate, ether carboxylate and organic carboxylic acid (salt) polymer, etc.), anti-staining agent (polyacrylate, carboxymethylcellulose, etc.), other softening agents, fluorescent dyes, Antifoaming agents (soap, silicone, etc.), enzymes (proteases, cellulases, amylases, lipases, etc.), enzyme stabilizers, colorants, fragrances, bleaches, bleach activators, etc. can be contained.

  Hereinafter, the water-soluble Na salt and K salt in the soft detergent composition of the present invention will be described.

  Na salts include sodium carbonate, sodium chloride, sodium sulfate, sodium bicarbonate, sodium sulfite, crystalline and amorphous sodium silicate, carbonate / hydrogen peroxide adduct, borate / hydrogen peroxide adduct, etc. Water-soluble inorganic salts, water-soluble organic acid salts such as sodium citrate and sodium fumarate, sodium polyacrylate, sodium salt of acrylic acid-maleic acid copolymer, water-soluble polymer such as carboxymethylcellulose, and known surfactants And the sodium salt thereof.

  Examples of the K salt include water-soluble inorganic salts such as potassium carbonate and potassium sulfate, water-soluble organic acid salts such as potassium citrate and potassium fumarate, potassium polyacrylate, potassium salt of acrylic acid-maleic acid copolymer, and Examples include potassium salts of known surfactants.

Among the Na salts and K salts, sodium carbonate, potassium carbonate, sodium chloride, and sodium sulfate are preferable because of the high content of Na and K. From the viewpoint of cleaning performance, sodium polyacrylate, acrylic acid-maleic acid The sodium salt of the copolymer is particularly preferred. Tripolyphosphate is a useful builder from the viewpoint of developing flexibility, but it is preferably not substantially blended from the viewpoint of environmental considerations. The soft detergent composition of the present invention contains a water-soluble Na salt and / or K salt corresponding to 23% by mass or more when converted as Na ₂ O or K ₂ O (water-soluble Na salt and K salt). In a total amount of 23% by mass or more). From the viewpoint of improving dispersibility, it is preferably 24% by mass or more, more preferably 25% by mass or more, and further preferably 26% by mass or more in the soft detergent composition.

  The soft detergent composition of the present invention having the above composition can be produced by mixing the above-mentioned components by a known method, and uses a surface modifier in terms of fluidity and caking resistance. The surface may be modified.

2. Physical properties of soft detergent composition The soft detergent composition of the present invention is preferably in the form of powder or tablet, more preferably in powder form, from the viewpoint of stability. In terms of low-temperature solubility and stability, the average particle size determined from the particle size measured by the sieving method described in JIS K 3362: 1998 is preferably 200 to 1000 μm, more preferably 250 to 900 μm, still more preferably. 300-800 μm. In terms of low temperature solubility and stability, the apparent density measured by the method described in JIS K 3362: 1998 is preferably 300 to 1200 g / L, more preferably 400 to 1100 g / L, still more preferably 600 to 1000 g / L, 700 to 980 g / L is particularly preferable.

  The pH of a 0.1% by mass aqueous solution measured at 20 ° C. described in JIS K3362: 1998 of the soft detergent composition is preferably 8-12, and 9-11. More preferably, 9.5-11 are still more preferable, and 10-11 are especially preferable.

Cleaning performance in terms of flexibility performance, calcium trapping amount by the following measuring method of a flexible detergent composition, 20~300CaCO ₃ mg / g are preferred, more preferably _{50~200CaCO 3 mg / g, 100~150CaCO 3} mg / g is more preferable.

(Measurement method of calcium capture amount)
The calcium trapping amount (Ca trapping amount) is a method described in JP-A-3-277696, page 3, lower right column, line 6 to page 4, upper left column, line 6 (however, an anionic surfactant is used as a soft detergent composition). To read).

Examples 1-13, Comparative Examples 1-2
A detergent base was obtained with ingredients excluding clay granulate, bleach, bleach activator, enzyme, fragrance, and surface modifying zeolite 6 wt%. The remaining ingredients were mixed with this to obtain a soft detergent composition. The composition of the soft detergent composition is shown in Table 1.

All of the obtained soft detergent compositions have a pH of a 10 mass% aqueous solution measured at 20 ° C. described in JIS K3362: 1998 in the range of 10 to 11, and a calcium capture amount of 50 CaCO ₃ mg / g to 200 CaCO _3. The range of mg / g, the average particle size was 300 to 800 μm, and the apparent density was 700 to 980 g / L.

  In addition, the detergency, softness | flexibility, and clothing residue of the obtained soft detergent composition were evaluated in accordance with the following method. These results are shown in Table 1.

(Preparation of collar fabric)
A collar cloth described in JIS K3362: 1998 was prepared.

(Cleaning conditions and evaluation method)
In accordance with the method for evaluating the cleaning power of synthetic detergents for clothing described in JIS K 3362: 1998, the cleaning powers of the soft detergent compositions in Table 1 and the index detergents for determining cleaning power were compared. The use concentration of the soft detergent composition in Table 1 was 1.0 g / L.
Evaluation criteria ○: Superior to index detergent
Δ: Same as index detergent
×: Inferior to index detergent

(Preparation of evaluation towel)
A commercially available cotton towel (100% cotton) is supplied to a mini washing machine ("N-BK2" manufactured by National), and a non-ionic surfactant (primary alcohol having 12 carbon atoms) is used as a pretreatment agent. A mixture of ethylene oxide with an average of 6 mol), crystalline silicate (pre-feed granule product), and sodium carbonate mixed at 1: 1: 3 (weight ratio) was used at 0.5 g / L. After washing at a water temperature of 20 ° C. for 7 minutes, centrifugal dehydration, rinsing for 3 minutes, dehydration, rinsing for 3 minutes, and dehydration were repeated 5 times in total to remove the treatment agent.

(Flexible evaluation method)
To 5 L of water at 20 ° C., 5.0 g of the soft detergent composition shown in Table 1 and 0.3 kg of cotton towel (4 pieces of 70 cm × 30 cm) were added and washed for 7 minutes. After dehydration, it was rinsed with 5 L of water for 3 minutes, dehydrated, rinsed for 3 minutes, dehydrated and air-dried. Five testers made a sensory evaluation of the softness of the hand using a towel and a pre-treated towel as a pair. When there is no difference and when it becomes hard, 0 points, when it becomes slightly softer, 1 point, when it becomes slightly softer, 2 points, when it becomes clear softly 3 points, the total points of 5 people are shown as follows It was.
Evaluation criteria
◎: Total of 10 points or more ○: Total of 6 points or more and less than 10 points △: Total of 3 points or more and less than 6 points ×: Total of less than 3 points

(Evaluation method for clothing residue)
5 g of water at 5 ° C. was charged with 5.0 g of the soft detergent composition shown in Table 1, 0.3 kg of black cotton broad 40 thin fabric (manufactured by Tanigami Shoten Co., Ltd.) (19 sheets processed into 30 cm × 38 cm), 7 Washed for a minute. After dehydration, it was rinsed with 5 L of water for 3 minutes, dehydrated, rinsed for 3 minutes, dehydrated and air-dried. From the number and size of the front and back residues per black cotton broad cloth washed with the soft detergent composition, the clothing residue was evaluated according to the following evaluation criteria.
Evaluation criteria
◎: No (mostly) residue is observed. ○: There is no residue of large particles (0.5 mm or more), and several to 10 residues of fine powder (less than 0.5 mm) are observed. Δ: Large ( There is no residue of fine particles (less than 0.5 mm), and dozens of fine powder (less than 0.5 mm) residues are observed. X: Residues of larger particles (0.5 mm or more) exist, and fine particles (0. (Less than 5 mm) is also observed. XX: There are several large (0.5 mm or more) particle residues, and many fine (less than 0.5 mm) residues are also observed.

  From the results in Table 1, the components (a), (b), (c), (d), and (e) are blended at predetermined concentrations and ratios in Examples 1 to 13 as compared with Comparative Examples 1 and 2. By doing this, it can be seen that a soft detergent composition excellent in clothing persistence, flexibility, and washability was obtained.

In the examples, the following were used as each component.
Zeolite: “Zeo Builder” (Zeo Builder, median diameter: 3.0 μm)
Anionic surfactant:
LAS-Na: Sodium alkylbenzene sulfonate having 12 to 14 carbon atoms in the alkyl group AS-Na: Sodium alkyl sulfate ester having 12 to 16 carbon atoms in the alkyl group Nonionic surfactant: 10 to 14 carbon atoms A primary alcohol with an average of 6 moles of EO added. Soap: Sodium fatty acid with alkyl group of 14 to 18 carbon atoms PEG: Polyethylene glycol (weight average molecular weight 8500)
・ Sodium carbonate: Dense ash (manufactured by Central Glass Co., Ltd.)
・ Sodium sulfate: neutral anhydrous sodium sulfate (manufactured by Shikoku Kasei Co., Ltd.)
・ Salt: Nakuru N (manufactured by Naikai salt industry)
・ Sodium bicarbonate: Sodium bicarbonate (manufactured by Tosoh Corporation)
-Tripolyphosphate Na: tripolyphosphate (manufactured by Shimonoseki Mitsui Chemicals)
・ Crystalline silicate: Pre-feed granule (manufactured by Tokuyama Siltech Co., Ltd.)
・ Sodium sulfite: Sodium sulfite (Mitsui Chemicals)
・ No. 2 silicate: No. 2 sodium silicate (manufactured by Fuji Chemical Co., Ltd.)
AA polymer: polyacrylic acid (average molecular weight 15,000; measured by GPC, converted to polyethylene glycol, manufactured by Kao Corporation)
AA / MA polymer: acrylic acid-maleic acid copolymer (sodium salt (70 mol% neutralized), monomer ratio is acrylic acid / maleic acid = 3/7 (molar ratio), average molecular weight 70000)
Enzyme: “Cellulase K” (described in JP-A 63-264699), “Cannase 24TK” (manufactured by Novo), “Sabinase 6.0T” (manufactured by Novo) in a mass ratio of 3: 1: 2. Use ・ Fluorescent dye: “Chino Pearl CBS-X” (Ciba Geigy)
Bleaching agent: sodium carbonate / hydrogen peroxide adduct (sodium percarbonate): Bleaching agent described in paragraph 0019 of JP-A-2000-256699 ・ Bleaching activator: sodium lauroyloxybenzenesulfonate granule (special Bleach activator described in paragraph 0018 of JP 2000-256699 A

  In addition, the following were used as clay granulated material (I)-(VI) in an Example.

The method for producing the clay granulated product (I) is as follows.
100 parts by mass of bentonite clay ore having a Na / Ca mass ratio of 0.02 and a water content of 25% by mass and 1.0 part by mass of sodium carbonate are added to a 2 L Henschel mixer and mixed for 3 minutes at a rotational speed of 1600 rpm. The obtained mixture was granulated with an extrusion granulator (screen diameter: 2 mmφ). Next, the granulated product is dried to a moisture content of 12% by mass with a dryer at 80 ° C. and pulverized in a mortar until it passes through a 125 μm sieve. 100 parts by mass of this pulverized product is put into a Henschel mixer, and 25 parts by mass of water is added during mixing at a rotational speed of 1600 rpm and mixed for 30 seconds. What dried this mixture to 12 mass% with the dryer of 80 degreeC cuts oversize (1410 micrometers or more) and undersize (180 micrometers or less), and obtains the clay granulated material (I). The clay granulated product had a Na / Ca mass ratio of 0.09 and an Na content of 0.61% by mass.

  The method for producing the clay granulated product (II) is in accordance with the method for producing the clay granulated product (I) except that the amount of sodium carbonate added is 2.0 parts by mass. The clay granulated product had a water content of 12% by mass, a Na / Ca mass ratio of 0.17, and an Na content of 1.1% by mass.

  The method for producing the clay granulated product (III) is the same as the method for producing the clay granulated product (I) except that the amount of sodium carbonate added is 4.2 parts by mass. The clay granulated product had a water content of 12% by mass, a Na / Ca mass ratio of 0.33, and an Na content of 2.1% by mass.

  The method for producing the clay granulated product (IV) is in accordance with the method for producing the clay granulated product (I) except that the amount of sodium carbonate added is 10.0 parts by mass. The clay granulated product had a water content of 12% by mass, a Na / Ca mass ratio of 0.77, and an Na content of 4.6% by mass.

  The method for producing the clay granulated product (V) includes a bentonite clay ore having a Na / Ca mass ratio of 0.33 and a water content of 25% by mass as a starting material, and a sodium carbonate input amount of 0.5 parts by mass. Is in accordance with the method for producing the clay granulated product (I). The clay granulated product had a water content of 12% by mass, a Na / Ca mass ratio of 0.48, and an Na content of 0.82% by mass.

  The method for producing the clay granulated product (VI) is in accordance with the method for producing the clay granulated product (V) except that the amount of sodium carbonate added is 1.2 parts by mass. The clay granulated product had a water content of 12% by mass, a Na / Ca mass ratio of 0.68, and an Na content of 1.2% by mass.

The soft detergent composition of the present invention can be suitably used as a soft detergent for textile products such as cotton towels, bath towels, T-shirts, and clothing such as trainers.

Claims (1)

(A) Clay granulation mainly composed of smectite type clay mineral represented by the following general formula (I) (however, the mass ratio of Na / Ca in the granulation is less than 1.0) 1 to 20% by mass
_{[Si 8 (Mg a Al b} ) O 20 (OH) 4] X- · X / n [Me] n + (I)
(In the formula, 0 <a ≦ 6, 0 ≦ b ≦ 4, 0.2 ≦ x = 12-2a-3b ≦ 1.2, and Me is Na, K, Li, Ca , Mg And at least one of NH ₄ , n represents the valence of Me),
(B) 1.0-18% by mass of a nonionic surfactant,
(C) Anionic surfactant (excluding fatty acid salts) 6 to 27% by mass,
(D) Alkali agent 10-35 mass% (however, silicate content is 6 mass% or less in the soft detergent composition), and (e) crystalline aluminosilicate 3-35 mass%,
A soft detergent composition comprising the following conditions (i) to (ii):
(I) Na in the clay granulated product is 1.0% by mass or more,
(Ii) Contains a water-soluble Na salt and / or K salt corresponding to 23% by mass or more when converted to Na ₂ O or K ₂ O in the soft detergent composition (including water-soluble Na salt and K salt) If the total amount is 23% by mass or more)
A soft detergent composition characterized by satisfying at least one of the following.