KR940000572B1 - Composition for thermoplastic synthetic fiber - Google Patents

Abstract

The composition contains 8-25 wt.% against the total amount of oiling component of hetero-cyclethio compound having hydroxyl groups which is added with alkylene oxide shown in formula (I) (where m: 1-2, 4 a+b 20, 0.2 b/a 1), and used as a lubricating agent along with conventional antistatic agents and emulsifiers. The oiling composition containing the composition provides good lubricating property to the fiber and also prevents smoke-generation or tar-formation when the thermoplastic synthetic fiber is subject to heat-treatment at high temperature because of its excellent heat-resistant property.

Description

Emulsion composition for thermoplastic synthetic fiber

The present invention relates to an emulsion composition for thermoplastic synthetic fibers to have excellent heat resistance when heat-treating the thermoplastic synthetic fibers at high temperature to suppress the production of fumes and tar material, and at the same time give excellent smoothness.

More specifically, the present invention is an emulsion composition which is used for emulsion treatment before melting and spinning thermoplastic synthetic fiber filament yarn, and has a hydroxyl group having excellent heat resistance and good smoothness instead of reducing mineral oil or fatty acid ester content. It is characterized by containing the compound which added the alcohol part of the cyclic thio compound with the alkylene oxide.

In general, an emulsion composition for thermoplastic synthetic fibers is composed of a component for providing antistatic and a flatness.

For example, anionic surfactants such as alkalsulfonate salts and higher fatty acid sulfides are used for the prevention of static electricity, and mineral oil, higher fatty acid esters and the like are used for imparting smoothness.

However, since most fiber emulsions are organic materials, when they come into contact with the heating plate for a long time at a high temperature around 200 ° C close to the melting point of the thermoplastic synthetic fiber, which is an organic synthetic polymer, they decompose and deteriorate, resulting in coloring or tar, and by evaporation and pyrolysis. The smoke phenomenon not only deteriorates the working environment but also causes problems such as yarn productivity and yarn quality deterioration.

In addition, mineral oils or fatty acid esters used as smoothing agents are easily deteriorated and tarned at high temperatures, and thus are deposited on the heating plate or contaminate the fibers, resulting in uneven heat transfer to the fibers to be treated. Will result.

An object of the present invention is to provide a heat-resistant improving emulsion composition for thermoplastic synthetic fibers that can suppress the generation of tar material during the heat treatment of the thermoplastic synthetic fibers, prevent smoke and maintain smoothness and antistatic properties even at high temperatures. Mineral oil or higher fatty acid ester used as a smoothing agent of thermoplastic synthetic fibers has good smoothness but lacks heat resistance, resulting in fumes and tar, resulting in deterioration of working environment and problems of yarn quality and productivity.

In order to improve this, there is a method of using a polyether with an alkylene oxide adduct as a smoothing agent, but this method gives some heat resistance, but alkylene oxide does not give enough smoothness in the production of yarn because the alkyl portion is not smooth enough. There is a problem of lowering the quality of the yarn by generating. In addition, there is also a method of using an aliphatic thioester as a smoothing agent component, but in order to exhibit sufficient heat resistance, it must be used in an excessive amount, so that the emulsion stability is poor and adheres unevenly to the fiber to be treated, thus causing a problem of uneven heat transfer. In view of the above facts, the present inventors have invented the emulsion composition of the present invention, which can be usefully used for fiber yarns heat-treated under high temperature.

Hereinafter, the present invention will be described in detail.

The present invention is characterized in that a heterocyclic thio compound having a hydroxyl group to which an alkylene oxide is added as a leveling agent together with a conventional antistatic agent and an emulsifier is contained in an amount of 8 to 25% by weight, based on the total weight of the emulsion composition. It is.

M is an integer a + b of 1 to 2, and 4≤a + b≤20b / a is 0.2≤b / a≤1.

In the present invention, when the added amount of the general formula (I) is less than 8%, there is no sufficient heat resistance effect, on the contrary, when the amount exceeds 25%, the cost goes up and the emulsion stability of the aqueous emulsion is worsened.

In addition, when the number of moles of the added alkylene oxide is less than 4, the emulsification becomes poor, and when it exceeds 20 moles, the smoothness is remarkably worse. Also, when b / a is less than 0.2, the friction between the sand and the sand is poor, and when the molar number is greater than 1, the emulsification is remarkably. Worse

The composition of the present invention is preferably treated when the synthetic fiber is produced by melt spinning. That is, the composition of the present invention is treated with an undrawn yarn discharged from the spinneret using an oil roller or an oil jet in an aqueous emulsion state of 5 to 15%.

When the composition of the present invention is adhered to 0.3 to 1.5% of the unstretched yarn during melt spinning of the synthetic fiber, the stretchability is good, the smoke and tar phenomenon are significantly reduced, and a yarn of good quality can be obtained.

Hereinafter, Examples and Comparative Examples will be described in detail with reference to Table 1 below.

Example 1

8% by weight of the compound of general formula (I), 22% by weight of mineral oil, 30% by weight of higher fatty acid ester, 20% by weight of higher alcohol alkylene oxide adduct, 15% by weight of polyethylene glycol (molecular weight 600) alkyl ester, alkyl sulfonite After slowly stirring the treated material of 5% by weight with hot water at 30 ° C. sufficiently to form a 10% emulsion solution, the emulsion was wound up at a speed of 1,000 m / min by a normal oil roller lubrication method. Treated with 4 polyethylene terephthalates and stretched the stretched yarn 4 times to obtain a 75 denier stretched yarn.

At this time, the temperature of the heat roller was 85 ℃ and heat setting was carried out at 160 ℃.

[Examples 2 to 3] and [Comparative Examples 1 to 7]

In the same manner as in Example 1, but the treatment composition was as shown in Table 1.

TABLE 1

However, the following things were used for the compound (I) of an Example and a comparative example.

* How to measure

1) Fume (CPM): Measured by Fume Counter for 1 minute.

(CPM): Counter Per Minute

2) TAR (%): Measure residue and weight ratio by heating for 5 hours at 20 ℃ hot air oven.

3) Mouth (dog): Measurement of the number of occurrences per 2,000m yarn.

4) Cleaning cycle (days): Hot plate cleaning cycle or heat roller cleaning cycle during yarn production.

5) Emulsification stability: Visually confirm the stability by leaving the emulsion after preparation.

Claims (1)

8 to 25% by weight of a heterocyclic thio compound having a hydroxyl group to which an alkylene oxide represented by the following general formula (I) is added as a smoothing agent component together with a conventional antistatic agent and an emulsifier An emulsion composition for thermoplastic synthetic fibers. However, m is an integer of 1 to 2, a + b is 4≤a + b≤20 b / a, 0.2≤b / a≤1