JPH09111657A - Oil agent for synthetic fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an oil agent for synthetic fibers, comprising a quaternary ammonium salt of a carboxylic acid, reduced in problems due to an electrostatic impediment, remarkably prolonging the cleaning period of scum or tar, improved in working environment and suitable for manufacturing yarns, processing, etc., of a polyester or a nylon. SOLUTION: This oil agent for synthetic fibers comprises preferably 0.2-2.0wt.% (based on the total weight of the oil agent) quaternary ammonium salt of a carboxylic acid such as 2-ethylhexanoic acid with trimethylamine, triethylamine, octyldimethylamine, etc.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an oil agent for synthetic fibers. More specifically, it relates to a spinning oil agent applied in the melt spinning step of thermoplastic synthetic fiber multifilaments.

[0002]

2. Description of the Related Art Conventionally, in the process of spinning synthetic fibers,
The spun yarn is provided with an aqueous emulsion of an oil agent that is a mixture of a lubricant and a surfactant. Both ionic and nonionic surfactants are used. Among them, the ionic activator is mainly used for the purpose of preventing static electricity, but after the fiber is adhered, it is easily dropped into the yarn path in the yarn making / processing process to become scum, or tar in the heat treatment process. In addition, the water-based emulsion of the oil agent is apt to propagate bacteria, mold, yeast, etc., and decomposes to form a gel-like substance, or accumulates in the yarn path to form a scum. These scum and tar cause fluff and yarn breakage.

In order to solve these problems, an oil agent containing a salt of a monoolefin dicarboxylic acid or its derivative has been proposed as an oil agent with little loss. (Japanese Patent Publication Sho 57-
No. 25666, Japanese Patent Publication No. 57-14469)

[0004]

However, even these oil agents are not sufficient for recent high-speed spinning and processing, and oil agents with less scum and tar are desired.

[0005]

Means for Solving the Problems As a result of intensive studies to obtain an oil agent in which the loss of scum and the generation of tar have been significantly reduced, the present inventors have found that by adding a small amount of a specific compound, scum, The inventors have found that the generation of tar is drastically reduced, and at the same time, the spoilage suppressing effect of the water-based emulsion can be obtained, and the present invention has been accomplished.

That is, the present invention is an oil agent for synthetic fibers, characterized by containing a quaternary ammonium salt of a carboxylic acid.

In the present invention, the carboxylic acid is an aliphatic monocarboxylic acid (eg, formic acid, acetic acid, propionic acid, caproic acid, caprylic acid, capric acid, undecanoic acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid). , 2-ethylhexanoic acid, isostearic acid, acrylic acid, methacrylic acid, oleic acid, erucic acid, cyclohexanecarboxylic acid, glycolic acid, lactic acid, laurylthiopropionic acid, etc., aliphatic dicarboxylic acids (eg oxalic acid, malonic acid, succinic acid) Acid, adipic acid,
Azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, maleic acid, thiodipropionic acid, etc.), aromatic monocarboxylic acids (eg benzoic acid, toluic acid, ethylbenzoic acid, etc.), aromatic dicarboxylic acids (eg phthalic acid) Acid, isophthalic acid, terephthalic acid, etc.).

Of these, preferred are aliphatic monocarboxylic acids, and particularly preferred is 2-ethylhexanoic acid.

The quaternary ammonium which constitutes the quaternary ammonium salt of the present invention is a quaternary compound of a tertiary amine. Examples of the tertiary amine include aliphatic amines (eg, trimethylamine, triethylamine, tri-n-propylamine, tri-n-butylamine, tri-n-octylamine, octyldimethylamine, lauryldimethylamine, stearyldimethylamineamine). Alicyclic amines (for example, N-methylpyrrolidine, N-ethylpyrrolidine, N-methylpiperidine, N-ethylpiperidine, N-methylhexamethyleneimine, N-ethylhexamethyleneimine, N-methylmorpholine, N-butyl) Morpholine, N, N'-dimethylpiperazine, N, N '
-Diethylpiperazine, 1,5-diazabicyclo [4,4
3,0] -5-nonene, 1,8-diazabicyclo [5,
4,0] -7-undecene).

Of these, preferred are aliphatic amines, and particularly preferred are trimethylamine, triethylamine and octyldimethylamine.

The quaternary ammonium salt of carboxylic acid of the present invention can be produced by the following method. For example, in the case of a salt of 2-ethylhexanoic acid and trimethyloctylammonium, octyldimethylamine 1
A methanol solution of trimethyloctyl ammonium methyl carbonate is obtained by charging an autoclave with dimethyl carbonate and methanol in equimolar amounts or more and reacting at about 120 ° C. under a pressure of about 5 Kg / cm ² . Then, a methanol solution of trimethyloctyl ammonium methyl carbonate is gradually added to 2-ethylhexanoic acid at 80 to 90 ° C, and carbon dioxide and methanol generated are distilled off. Next, water is added, and after sufficient anion exchange reaction is performed, the concentration is adjusted to obtain the product.

In the synthetic fiber oil agent of the present invention, the content of the quaternary ammonium salt of fatty acid is usually 0.1 to 5.0% by weight, preferably 0.2 to 5.0% by weight based on the total weight of the oil agent.
2.0% by weight. If the content is less than 0.1% by weight, the antistatic property tends to decrease. If the content exceeds 5.0% by weight, scum and tar tend to increase.

Any component may be used in the synthetic fiber oil agent of the present invention without departing from the spirit of the present invention. As an optional component, a lubricant (for example, mineral oil, fatty acid ester, polyether, silicone oil, etc.), an emulsifier (for example, polyhydric alcohol ester type nonionic activator, polyethylene glycol type nonionic activator, amide type nonionic activator, etc.), Antistatic agent (eg soap, sulfate type anion activator, sulfonate type anion activator, phosphate type anion activator, betaine type amphoteric activator, etc.) Oiliness improver (eg higher fatty acid and higher aliphatic amine), extreme pressure additive , Rust preventives, antioxidants, and other functional additives, and the types thereof are not particularly limited.

The oil agent of the present invention is fed to the spun yarn as an aqueous emulsion in the melt spinning process of synthetic fibers.

The concentration of the emulsion is 0.5 to 30% by weight.
It is possible to select an arbitrary concentration within the range. Preferably 5
-20% by weight.

There is no particular limitation on the method of refueling the emulsion, and any method such as nozzle lubrication or roller lubrication may be used.

The amount of the oil agent adhered is 0.1 in terms of the pure content with respect to the fiber.
-2.0 wt%, preferably 0.2-1.5 wt%

Examples of synthetic fibers that can be applied include thermoplastic synthetic fiber multifilaments such as polyester, nylon, and polypropylene. There is no particular limitation on the thread brand, and it is widely applied from fine articles for clothing to thick articles for industrial materials.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be further described with reference to Examples and the like, but the present invention is not limited thereto. In the following, parts and% indicate parts by weight and% by weight, respectively.

[0020]

【Example】

Examples 1 to 4 and Comparative Examples 1 to 4 To the following base oils, the quaternary ammonium salt of the present invention and the conventionally used antistatic agent were added,
The oil agents in Table 1 (Examples 1 to 4 and Comparative Examples 1 to 4) were prepared. Next, a commercially available polyester filament (75 denier, 36 filaments) was degreased and these oils were attached to the yarn so that the amount of pure components was 0.8% and dried. The amount of static electricity generated, the amount of scum generated, and the amount of tar generated were evaluated using these oil agent-attached yarns as sample yarns. Table 2 shows the results.

[Composition of Base Oil] Isotridecyl stearate 60 parts Glycerin monooleate 10 parts Oleyl alcohol (EO) 5 mol adduct 12 parts Hardened castor oil (EO) 15 mol adduct 15 parts Lauric acid diethanolamide 2 parts EO represents ethylene oxide.

[Antistatic Agent] Compound A: Triethylmethylammonium phthalate Compound B: Tetramethylammonium maleate Compound C: Octyltrimethylammonium-2-ethylhexanoate Compound D: Paraffin (14 to 16 carbon atoms) Sulfonate Na salt (Bauer Co .: Warorato U) Compound E: Diisooctyl sulfosuccinate Na salt Compound F: Pentadecenyl succinic acid K salt Compound G: Laurate ammonium salt Compound H: Isotridecyl phosphate dibutylamino Ethanol salt

[Evaluation Items and Method] Amount of static electricity generated: Initial tension of the sample yarn was 10 g, running speed was 30
It was run while being wound around an alumina ceramic pin at 0 m / min, and the amount of static electricity generated was measured by a current collector-type potentiometer. Amount of scum falling off: Initial tension of the sample yarn is 10g, running speed is 30
While running while contacting the reed blade at 0 m / min, the amount of the deposit on the reed blade and the amount of the fallen material under the reed blade after 1 hour was visually judged. ◎ No scum dropout ○ 〃 Somewhat △ 〃 Somewhat large × Larger amount of tar generated: Initial tension of sample yarn 10 g, running speed 30
It was wound around a hot roller having a surface temperature of 200 ° C. at 0 m / min and run, and the amount of tar after 1 hour was visually judged. ◎ No tar generation ○ 〃 Somewhat △ △ 〃 Somewhat large × Many

[0024]

[Table 1]

[0025]

[Table 2]

Next, using ion-exchanged water, one of the oil solutions shown in Table 1 was used.
A 0% aqueous emulsion was prepared, sealed tightly, and allowed to stand in a 37 ° C incubator for 72 hours. After that, the total number of bacteria X [cells / cc] in the emulsion was measured by "San Eye Bio Checker TTC: manufactured by Sanai Petroleum Co., Ltd.". Table 3 shows the results.

[0027]

[Table 3]

From Table 2, it can be seen that the oil agent of the present invention has much better antistatic property than the conventional oil agent, and less scum drop-off and tar generation. Further, it is also clear from Table 3 that the oil agent of the present invention has an effect of suppressing the reproduction of bacteria and the like.

[0029]

EFFECTS OF THE INVENTION The use of the oil agent of the present invention improves the problems associated with electrostatic damage and gives high quality fibers. In addition, the cleaning cycle for scum and tar is greatly extended. In addition, the amount of preservative added to the emulsion can be significantly reduced,
It can be expected to reduce costs and improve the working environment.

Front Page Continuation (72) Inventor Misao Yoshimi 1-11, Hitotsubashi-honmachi, Higashiyama-ku, Kyoto Sanyo Chemical Industry Co., Ltd.

Claims (1)

[Claims] 1. An oil agent for synthetic fibers, comprising a quaternary ammonium salt of a carboxylic acid.