JPS5851544B2 - Synthetic fiber oil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved synthetic fiber lubricant used in the processing of synthetic fibers. This invention relates to a synthetic fiber oil with improved non-uniformity of adhesion.

Synthetic fiber oils give synthetic fibers good flexibility, smoothness, cohesiveness, and
It is used to provide antistatic properties.

Such synthetic fiber oils contain animal oils, vegetable oils, mineral oils, paraffin wax, higher alcohols, fatty acid esters, etc. as ingredients that provide softness and smoothness, and alkyl phosphates, alkyl sulfates, etc. as ingredients that provide focusing, emulsifying, and antistatic properties. It consists of surfactants such as alkylamine polyoxyethylene adducts, dimethyl alkyl betaines, and polyoxyethylene alkyl allyl ethers.

However, with conventional synthetic fiber lubricants, several deficiencies are found when the speed of the lubricating process is increased in order to improve the operating rate.

In other words, increasing the speed of the lubricating process for synthetic fibers such as polyester, nylon, and acrylic fibers causes an absolute shortage of oil adhesion (oil pickup) from the lubricating device to the fibers, and uneven adhesion of the lubricant to the fibers. easy.

In particular, with highly multifilament, the distribution of the oil may not be uniform, and once the oil has adhered, it may scatter, reducing the actual amount of oil adhesion, which impairs the desired smoothness, focusing, and antistatic properties. In addition, serious defects occur during the manufacturing process, such as causing wear and tear on various machines.

From this point of view, research has been actively conducted to solve the problems of these synthetic fiber oils, but these problems have not yet been solved.

However, as a result of intensive research aimed at resolving these difficulties, the present inventors have discovered that good results can be obtained by adding a specific amount of certain limited fluorine-based organic compounds to conventional synthetic fiber oils. The present invention has now been completed.

That is, the present invention provides a material that has a "substantially affinity for synthetic fiber oils, contains a perfluoroalkyl group having 3 to 18 carbon atoms, has a fluorine content of 2 to 70% by weight, and has a molecular weight of 3.
Synthetic fiber oil containing o, ooi to 10% by weight of a fluorine-based organic compound of 00 to 200,000 based on the synthetic fiber oil.

Here, fluorine-based organic compounds are those that characteristically have the following points.

That is, (i) the compound has at least one perfluoroalkyl group, and this perfluoroalkyl group may be linear, branched, or cyclic (for example, cyclohexyl), and furthermore, there is an oxygen atom between the carbon atoms. may intervene (
For example, (CF3)2CFOCF2CF2...
), and the number of carbon atoms in this alkyl group is suitably 3 to 18, preferably 6 to 12.

In this case, if the number of carbon atoms is less than 2, the desired effect cannot be obtained, and on the other hand, if the number of carbon atoms is 19 or more, it will significantly impair economic efficiency in production and is not appropriate.

The fluorine content of the C nuclear compound is 2 to 70% by weight, preferably 15 to 50% by weight, and outside the above range, the desired effects of the present invention cannot be obtained.

Excessive fluorine content poses a problem in terms of affinity for oil agents.

(2) The molecular weight of the core compound is from 300 to 200,000, preferably from 600 to 20,000**; if it exceeds 200,000, it has poor affinity for oils, and if it is less than 300, it evaporates easily and is not suitable.

(2) Furthermore, the compound must have an affinity for the synthetic fiber oil by dissolving, solubilizing, and dispersing it in the synthetic fiber oil.

Among the above-mentioned fluorine-based organic compounds, one having the optimum affinity for the specific oil agent is selected.

Examples of such fluorine-based organic compounds include the following compounds.

Examples of the fluorine-based organic compound include those obtained by adding ethylene oxide or propylene oxide to a perfluoroalkyl group-containing alcohol as a precursor.

[However, m and n are integers of 2 to 100] Furthermore, (poly)esters of (1) perfluoroalkyl group-containing -hydric or polyhydric alcohols and (perfluoroalkyl group-containing -hydric or polyhydric carboxylic acids), especially (1) perfluoro (Poly)esters of alkyl-containing or polyhydric alcohols and fluorine-free monohydric or polycarboxylic acids, and perfluoroalkyl group-containing or polyhydric carboxylic acids and fluorine-free monocarboxylic acids. Alternatively, (poly)esters with polyhydric alcohols can also be mentioned as the fluorine-based organic compound of the present invention.

Particularly preferred is oligomeric polyester.

Examples of the components used in this case are listed below.

Acetic acid, adipic acid, sebacic acid, phthalic acid, maleic acid, ethylene glycol monomethyl ether trimellitate, propylene glycol, monomethyl ether, ethylene glycol,
Flopylene gelicol, diethylene glycol, glycerin, poly(oxyalkylene) glycol and its monoalkyl ether.

Furthermore, perfluoroalkyl group-containing-
Hydrolic or polyhydric alcohol (optionally may include other fluorine-free monohydric or polyhydric alcohols)
(Poly)urethanes with monovalent or polyvalent isocyanates such as hexyl isocyanate, toluene diisocyanate, diphenylmethane diisocyanate, hexamethylene diincyanate can also be used as the fluorinated organic compound of the present invention.

Additionally, perfluoroalkyl group-containing epoxy compounds such as homopolymers and preferably (ethylene oxide,
Copolymers of propylene oxide, epichlorohydrin, etc.) can also be used.

Homopolymers of polymerizable perfluoroalkyl group-containing vinyl monomers and copolymers, preferably with other vinyl monomers, can also be used as the fluorocarbon compounds of the present invention.

Examples of such perfluoroalkyl group-containing vinyl monomers include the following.

Examples of other vinyl monomers include olefins such as ethylene, propylene, and butylene, (meth)acrylates, carboxylic acid vinyl esters, styrene, vinyl halides, vinyl ethers, vinyl ketones, butadiene, and especially polyoxyalkylene (meth)acrylates. It will be done.

In this case, vinyl polymerization can be carried out by a known method, for example by a solution polymerization method using a radical initiator.

The molecular weight of the polymer can be adjusted within a preferred range by adjusting the initiator concentration, monomer concentration, and type and concentration of chain transfer agent (eg, mercaptan).

Further, siloxanes containing niperfluoroalkyl groups are also useful as fluorinated organic compounds in the present invention.

Preferred siloxanes are cohydrolysis products of silanes containing perfluoroalkyl groups and silanes that do not contain perfluoroalkyl groups.

Examples of such perfluoroalkyl group-containing silanes include the following.

The silane containing no perfluoroalkyl group is preferably a silane containing a polyoxyalkylene group.

The amount of fluorine-based organic compound added to the synthetic fiber oil is o, o
oi to 10% by weight, preferably 0.01 to 1% by weight.

The fact that a small amount of the fluorine-based organic compound is sufficient means that not only is it economical, but the properties of the base oil are not impaired.

The synthetic fiber oil of the present invention may be either non-aqueous or emulsion-based, and can be applied to various synthetic fibers, such as polyester, nylon, and acrylic fibers, by a conventional method such as a spray method or a rotating roller method.

In this way, the synthetic fiber oil agent of the present invention can be used for spinning, spinning, and spinning of synthetic fibers.
During the oil supply stage during high-speed operation in processing processes such as weaving and knitting, it provides more stable and uniform oil adhesion to synthetic fibers than conventional lubricants, thus improving the smoothness and cohesion of fibers, which have tended to be lacking in the past. In addition to providing sufficient electricity and antistatic properties, it can also reduce damage caused by wear on various machines.

Next, the present invention will be explained in more detail with reference to Examples.

Note that "parts" refer to "parts by weight." Example 1 36 parts of polyoxypropylene glycol methacrylate having a molecular weight of 600 were polymerized in ethyl acetate using 3 parts of lauryl mercaptan to obtain a viscous fluorine-based organic compound having a molecular weight of 4000.

Next, the following synthetic fiber oil was prepared using this fluorine-based organic compound.

Mineral oil (6σ') So, o parts Polyoxyethylene dodecyl phenol 20.0 parts - ether (3 moles of ethylene oxide adduct) The above fluorine-based organic compounds o, i parts Also, as a comparative example, the fluorine-based organic compound was excluded was also prepared.

These two types of synthetic fiber lubricants are rolled up onto a nylon 6 multifilament using a rotating roller set lubricating method at a speed of 300.
m/min, 500771/min and 1000 m/min.

The amount of oil picked up at this time was measured, and the results are shown below as a percentage of the yarn.

By the way, the surface tension of the oil in the example at 23°C is 1.
1.1 dynes/cm, and that of the comparative oil agent was 29.2 dynes/cm.

Furthermore, for the two types of oil agents prepared here, the spreading speed of each oil agent as oil droplets was examined on silicone surface treated paper.

In addition, silicon surface-treated paper has a critical surface tension (W, J for critical surface tension.

Zisman J, Phys, Chem, 61. 1
046 (1957)) is about 30 dynes/cm, and has a property of being difficult to wet.

A drop of oil was gently dropped onto the surface using a glass pipette, and the diameter of the oil droplet was measured over time.

The results are shown in Table 2 below.

This result also shows that the oil agent of the present invention spreads easily.

Example 2 C8F17SO2N(C3H7)CH2CH20CH=
218 parts of CH and 42 parts of polyoxyethylene glycol methacrylate with a molecular weight of 500 are mixed with 0 lauryl mercaptan.
．． Polymerized in ethyl acetate using 5 parts, molecular weight approximately 160
A viscous fluorine-based organic compound of 0.00 was obtained.

The following oil solution was prepared using this. Spindle oil (55
) 55.0 parts Polyoxyethylene nonylpheno-35.0 parts ether (ethylene oxide 10 mole adduct) Oleic acid diglyceride 5.0 parts*
Rail alcohol: 5.0 parts Fluorine-based organic compound: 0.3 parts When this oil was applied to polyester for staple fiber, it had excellent spinnability and a sufficient amount of oil adhesion was obtained.

Example 3 The fluorine-based organic compound of the present invention was added in an amount of 0.1% by weight to various synthetic fiber oils or their components, and the surface tension of the oil was measured as a standard for comparing the performance of the oil and compared with that without the addition.

The results are shown in Table 3 below.

A lower surface tension is desirable. Example 4 A 15% by weight water emulsion was prepared by emulsifying an oil with the following composition in water.

This emulsion is rolled up onto a nylon 6 multifilament using a rotating roller set oiling method at a speed of 1000.
When oil was supplied at a rate of m/min, uniform and sufficient oil adhesion was observed.

Example 5 The following composition: When an oil agent consisting of 85.0 parts* of mineral oil (60") was applied at high speed to polyester fiber for filament, the oil was lower than that of the oil agent without the fluorine-based organic compound mentioned above. The amount of adhesion was 1.45 times.

Example 6 C8F1□5O2N(C3H7)CH2CH20H2 mol, polyoxypropylene glycol (molecular weight 600)
A fluorine-based organic compound having the following structural formula was obtained from 1 mole and 2 moles of 2,4-toluene diisocyanate.

Next, a synthetic fiber oil having the following composition was applied to the polypropylene around the stable fiber.

As a result, a higher degree of smoothness and antistatic properties were obtained compared to those to which no fluorine-based organic compound was added.

Example 7 The following composition: A 10% by weight water emulsion was prepared by emulsifying a synthetic fiber oil in water.

When this emulsion was applied to polyester for staple fibers at high speed using a rotating roller, the resulting polyester staple fibers had particularly good cohesiveness and
It had good smoothness and antistatic properties.

Example 8 A 15% by weight water emulsion was prepared by emulsifying a synthetic fiber oil having the following composition in water.

Apply this emulsion to nylon 6 for staple fiber.
was oiled using a high-speed rotating roller set oiling method.

As a result, uniform oil adhesion and excellent smoothness were obtained.

Claims (1)

[Claims] 1 Substantially compatible with synthetic fiber oils, with a carbon number of 3 to
It contains 18 perfluoroalkyl groups, has a fluorine content of 2 to 70% by weight, and has a molecular weight of 300 to 20,000.
0 fluorine-based organic compound to synthetic fiber oil agent 0.001
A synthetic fiber oil agent characterized by containing ~io% by weight.