JP2852890B2 - Oil for synthetic fibers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, in the process of spinning synthetic fibers,
A water-based emulsion of an oil agent comprising a mixture of a lubricant and a surfactant is applied to the spun yarn. Both ionic and nonionic surfactants are used. Of these, ionic activators are mainly used for the purpose of preventing static electricity, etc., but after fiber attachment, they are likely to fall into the yarn path in the yarn-making and processing steps to form scum, and to become tar in the heat treatment step. Further, in the aqueous emulsion of the oil agent, bacteria, molds, yeasts, and the like are easily propagated, and decay to form a gel-like substance or accumulate in a thread path to form scum. These scums and tars cause fluff and yarn breakage.

[0003] In order to solve these problems, oils containing salts of monoolefin dicarboxylic acid or a derivative thereof have been proposed as oils with less falling off. (Special Publication 57-
No. 25666, Japanese Patent Publication No. 57-14469)

[0004]

However, these oils are not sufficient for recent high-speed yarn production and processing, and oils with less scum and tar are desired.

[0005]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to obtain an oil agent in which scum detachment and tar generation have been significantly reduced, and as a result, by adding a specific compound in a small amount, scum, The inventors have found that the generation of tar is remarkably reduced, and the effect of inhibiting the decay of the aqueous emulsion can be obtained.

That is, the present invention comprises a quaternary ammonium salt of a carboxylic acid and a component selected from a lubricant, an emulsifier, an antistatic agent, an oiliness improver, an extreme pressure additive, a rust inhibitor and an antioxidant. And a quaternary ammonium salt of a carboxylic acid having a content of 0.1 to 2.0% by weight based on the total weight of the oil agent.

In the present invention, carboxylic acids include aliphatic monocarboxylic acids (for example, 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, undecandioic acid, dodecandioic 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.).

[0008] Among them, preferred are aliphatic monocarboxylic acids, and particularly preferred is 2-ethylhexanoic acid.

The quaternary ammonium constituting the quaternary ammonium salt of the present invention is a quaternary tertiary amine. Examples of the tertiary amine include aliphatic amines (for example, trimethylamine, triethylamine, tri-n-propylamine, tri-n-butylamine, tri-n-octylamine, octyldimethylamine, lauryldimethylamine, and stearyldimethylamineamine). Alicyclic amines (eg, 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,
3,0] -5-nonene, 1,8-diazabicyclo [5,
4,0] -7-undecene).

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

The quaternary ammonium salt of a 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
More than equimolar amounts of dimethyl carbonate and methanol are charged into an autoclave and reacted at about 120 ° C. under a pressure of about 5 kg / cm ² to obtain a methanol solution of trimethyloctyl ammonium methyl carbonate. Next, a methanol solution of trimethyloctyl ammonium methyl carbonate is gradually added to 2-ethylhexanoic acid at 80 to 90 ° C., and the generated carbon dioxide and methanol are distilled off. Subsequently, water is added, and after sufficient anion exchange reaction is performed, the concentration is adjusted.

In the spinning oil agent for synthetic fibers of the present invention (hereinafter referred to as oil agent for synthetic fibers or oil agent), the content of the quaternary ammonium salt of the fatty acid is usually from 0.1 to 2.% based on the total weight of the oil agent. 0% by weight. If the content is out of the above range, the antistatic property tends to decrease or scum and tar tend to increase.

In the oil agent for synthetic fibers of the present invention, any components can be used without departing from the gist of the present invention. Optional components include lubricants (eg, mineral oils, fatty acid esters, polyethers, silicone oils, etc.), emulsifiers (eg, polyhydric alcohol ester type nonionic activators, polyethylene glycol type nonionic activators, amide nonionic activators, etc.), Antistatic agents (eg, soaps, sulfate type anionic surfactants, sulfonate type anionic surfactants, phosphate type anionic surfactants, betaine type amphoteric surfactants, etc.) Oiliness improvers (eg, higher fatty acids and higher aliphatic amines), extreme pressure additives , Rust inhibitors, antioxidants, and other functional additives, and the types thereof are not particularly limited.

The oil agent of the present invention is supplied to the spun yarn as an aqueous emulsion in the step of melt-spinning 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.

The method of lubricating the emulsion is not particularly limited, and any method such as nozzle lubrication and roller lubrication may be used.

[0017] The amount of the oil agent adhered to the fiber is 0.1
To 2.0% by weight, preferably 0.2 to 1.5% by weight

The synthetic fibers to be applied include thermoplastic synthetic fiber multifilaments such as polyester, nylon, and polypropylene. The yarn brand is not particularly limited, and is widely applied from small articles for clothing to thick articles for industrial materials.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 1-4, Comparative Examples 1-4 The following base oils were added with the quaternary ammonium salt of the present invention and a conventionally used antistatic agent,
Oils shown in Table 1 (Examples 1 to 4 and Comparative Examples 1 to 4) were prepared. Next, these oil agents were attached to a defatted yarn of a commercially available polyester filament (75 denier, 36 filaments) so that the amount of pure components attached was 0.8%, and dried. Using these oil-adhered yarns as sample yarns, the amount of generated static electricity, the amount of generated scum, and the amount of generated tar were evaluated. 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 (14-16 carbon atoms) Sulfonate Na salt (manufactured by Bayer: Wallolate U) Compound E: diisooctylsulfosuccinate Na salt Compound F: pentadecenyl succinate K salt Compound G: ammonium laurate compound H: isotridecyl phosphate dibutylamino Ethanol salt

[Evaluation Items and Methods] Amount of static electricity generated: Initial tension of 10 g of sample yarn, running speed of 30
It was run while being wound around an alumina ceramic pin at 0 m / min, and the amount of generated static electricity was measured by a current collecting potential difference meter. Amount of scum falling off: Initial tension of sample yarn 10 g, running speed 30
The vehicle was driven while contacting with the reed wing at 0 m / min, and the amount of the material adhering to the reed wing and the amount of the material falling below the reed wing one hour later was visually determined. ◎ No scum dropped ○ 〃 There is a little △ 〃 Somewhat much × Many Tar generation: Initial tension of sample yarn 10g, running speed 30
It was wound around a hot roller having a surface temperature of 200 ° C. at 0 m / min and allowed to run, and the amount of tar after 1 hour was visually judged. ◎ No tar generated ○ 少 し A little △ 〃 Somewhat much × Many

[0024]

[Table 1]

[0025]

[Table 2]

Next, one of the oils shown in Table 1 was prepared using ion-exchanged water.
A 0% aqueous emulsion was prepared, sealed and left in an incubator at 37 ° C for 72 hours. Thereafter, the total number of bacteria in the emulsion, X [cells / cc], was measured using "San Ai Bio Checker TTC: Sanai Sekiyu KK". 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 properties than the conventional oil agent, and also has less scum and less tar. It is also clear from Table 3 that the oil agent of the present invention has an effect of suppressing the growth of bacteria and the like.

[0029]

By using the oil agent of the present invention, problems associated with static electricity damage are improved, and high quality fibers can be obtained. Also, the cleaning cycle of scum and tar is greatly extended. Also, the amount of preservative added to the emulsion can be significantly reduced,
Cost reduction and work environment improvement can also be expected.

Continuation of the front page Examiner Masato Matsunawa (56) References JP-A-7-3650 (JP, A) JP-A-62-223374 (JP, A) JP-A-64-66108 (JP, A) JP-A-3 -67641 (JP, A) JP-A-64-65198 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) D06M 13/00-13/535

Claims (5)

(57) [Claims] 1. A carboxylic acid containing a quaternary ammonium salt of a carboxylic acid and a component selected from a lubricant, an emulsifier, an antistatic agent, an oiliness improver, an extreme pressure additive, a rust inhibitor and an antioxidant. Wherein the content of the quaternary ammonium salt is 0.1 to 2.0% by weight based on the total weight of the oil agent. 2. The spinning oil agent for synthetic fibers according to claim 1, wherein the quaternary ammonium salt is a quaternized tertiary amine selected from aliphatic amines and alicyclic amines. 3. The spinning oil agent for synthetic fibers according to claim 1, wherein the quaternary ammonium salt is a quaternized product with dimethyl carbonate. 4. The spinning oil agent for synthetic fibers according to claim 1, wherein the carboxylic acid is an aliphatic monocarboxylic acid, an aliphatic dicarboxylic acid, an aromatic monocarboxylic acid or an aromatic dicarboxylic acid. 5. The spinning oil agent for synthetic fibers according to claim 1, which is used in a melt spinning step of thermoplastic synthetic fiber multifilaments.