KR940007708B1 - Heat-resistant composition for synthetic fiber - Google Patents

Abstract

The heat resistant agent compsn. for thermoplastic synthetic fiber comprises 30-60 wt.% of a smoothing agent, 3-10 wt.% of an antistatic agent, 20-40 wt.% of an emulsifying agent, and 2-12 wt.% of modified silicone oil of formula (1) where R1,R2,R3,R4,R5 are alkyl gp. or hydroxy alkyl gp., R6 is alkyl, n is 2-3, x is 5-20. The obtd. heat resistant agent compsn. reduces forming of tar material and prevents emitting of smoke, maintains smoothness and static resistance in the step of heat-treating the thermoplastic synthetic fiber.

Description

Heat resistant treatment composition for thermoplastic synthetic fibers

The present invention relates to a heat resistant treatment composition that prevents the generation of tar and smoke when heat-treated thermoplastic synthetic fibers at high temperatures.

More specifically, the present invention is to process the yarn during the yarn manufacturing process by adding a modified silicone oil having excellent heat resistance to a conventional spinning oil composition containing a mineral oil or fatty acid ester and an emulsifier as a component when manufacturing the thermoplastic fiber It is an object of the present invention to provide a treatment agent for thermoplastic fibers that has smoothness and antistatic properties when subjected to thermoplastic fiber heat treatment during spinning, stretching, and twisting.

In general, when the fiber is manufactured from an organic synthetic polymer material, for example, when the secondary transition point such as polyethylene terephthalate is high, the productivity can be improved by thermally stretching the unstretched unmelted yarn by conventional melt spinning method. It is a well-known fact, and in general, fibers made of organic synthetic polymer materials undergo several heat setting for modification.

In addition, various bulky processed yarns have been subjected to high temperature heat treatment to fix their shape.

In general, thermoplastic fibers are often processed at a high speed in stretching and various heat processing processes, and thus require high level of antistatic property and smoothness, and heat resistance to prevent deterioration or tar generation at high temperatures. This is urgently required as the processing machines become faster.

Therefore, the treating agent for the fiber used in the process for producing the synthetic fiber is composed of a component for preventing static electricity and a component giving flatness.

For example, cationic surfactants of anionic or ammonium salts, such as alkylsulfonate salts and higher fatty acid sulfides, are generally used for antistatic purposes, and mineral oil, higher fatty acid esters, etc. are used for smoothing.

However, most of the processing agents for textiles are organic materials, so if they are contacted for a long time at high temperatures around 2000 ° C near the melting point of thermoplastic synthetic fibers made of organic synthetic polymer materials, they will decompose, discolor, or generate tar and lose weight due to evaporation. There is a combination of fumes.

Among them, anionic or cationic surfactants used for the prevention of static electricity generation, nuclear emulsions used as leveling agents, and nonionic surfactants used as emulsifiers are easily deteriorated and tarned at high temperatures, and thus are deposited on a heating plate or fiber. It contaminates, weakens the working environment by fuming, and causes non-uniform heat transfer to the fiber to be treated, resulting in deterioration of product and deterioration of workability.

SUMMARY OF THE INVENTION An object of the present invention is to provide a heat resistance improving treatment agent for thermoplastic synthetic fibers that can suppress generation of tar material during heat treatment of thermoplastic synthetic fibers, prevent fuming and maintain smoothness and antistatic properties even at high temperatures.

In order to improve the heat resistance of the fiber treatment agent, polyethylene glycol can be used instead of the mineral oil used as the leveling agent to obtain the anti-smoke effect. However, when used together with the anionic or cationic surfactant used as the antistatic component, It is possible to prevent tar from being damaged by tar and the tarization phenomenon and to prevent tar from being produced by using an emulsion containing phosphate anionic surfactant and sulfonate as an antistatic component. There was a problem of deteriorating its physical properties.

Accordingly, the present invention solves the above problems, and the present invention focuses on the fact that the siloxane bond of silicon has a much larger bond energy than the organic bond energy and is stable over a wide temperature range of -80 to 50 ° C. will be.

The present invention is described in detail as follows.

The present invention is a modified silicone represented by the following general formula (1) to a conventional thermoplastic synthetic fiber treating agent by adding 2 to 12% by weight based on the weight of the treating agent.

Below

In formula (1), R <_1> , R <_2> , R <_3> , R <_4> , R <_5> is an alkyl group or a hygioxy alkyl group.

R ₆ is an alkyl group

n is an integer of 2≤n≤3

x is an integer from 5 to 20

In the treatment composition for thermoplastic fibers of the present invention, 2 to 12 wt% of a floured silicone oil represented by the formula (1) is added to 30 to 60 wt% of a smoothing agent, 3 to 10 wt% of an antistatic agent, and 20 to 40 wt% of an emulsifier, It was characterized by the composition.

In the present invention, when the amount of the modified silicone oil is less than 2% by weight, the effect is weak, and when it exceeds 12% by weight, the emulsion stability is poor, which is not good.

The treatment agent composition of the present invention is not only able to significantly reduce the tar accumulation on the hot plate because it is stable to heat and passes through the hot plate on the hot plate before tar is generated on the hot plate in the heat treatment process involved in the yarn manufacturing process. It is possible to prevent damage to the hot plate due to tar removal of the hot plate, and to improve productivity by prolonging the cleaning cycle and to enable high speed operation under high temperature, thereby improving productivity.

In addition, the present invention is because the binding energy of the siloxane is usually larger than the organic binding energy will be able to bring about improved working environment, improved operation and yarn properties can be significantly reduced smoke generation due to pyrolysis at high temperatures.

Example 1

Alkyl alkylate 60% (smoothing agent), higher alcohol (ethylene oxide) adduct and amine (ethylene oxide) adduct 19% by weight (emulsifier), polyethylene glycol (molecular weight 600) alkylate 18% by weight (emulsifier) 4% by weight of modified silicone oil

The resulting fiber treatment agent was slowly stirred sufficiently with hot water at 25-35 ° C. to prepare a 15% emulsion solution, and the emulsion was applied to 36 polyethylene terephthalates with the number of filaments wound at a speed of 1000 m / min by a normal oil roller method. This process is performed by stretching the undrawn yarn four times to obtain a drawn yarn of 75 denier.

At this time, the temperature of the thermal roller was 85 ° C, the heat setting was performed at 160 ° C, and the heat-setting plate was used for more than 3 weeks, and the generation of tar material was hardly found, and the smoke generation was significantly reduced.

In addition, the yarn was smoothed to reduce the occurrence of high quality yarn was obtained. The result of comparing this with the comparative example 1 is shown in Table 1.

Comparative Example 1 is a case in which the same composition or silicone oil as in Example 1 is not blended, and Comparative Example 2 uses the same composition as in Example 1 but ordinary silicone oil.

EXAMPLE 2 AND COMPARATIVE EXAMPLES 3-4

It was prepared in the same manner as in Example 1, but modified silicone oil was used in 12% by weight, (Example 2), 0.5% by weight, (Comparative Example 3) and 14% by weight (Comparative Example 4), respectively.

The results are shown in Table 1.

TABLE 1

In Table 1, tar measurement was measured by heating for 5 hours at a hot air temperature of 200 ℃.

CPM: Count Per Minute

Mou: Occurrence per 2000m

Claims (1)

Heat resistance for thermoplastic synthetic fibers in which a modified silicone oil represented by the following general formula (1) is added to the treating agent for a thermoplastic synthetic fiber composed of a smoothing agent, an antistatic agent, an emulsifier, etc. Treating agent composition. Below In formula (1), R ₁ , R ₂ , R ₃ , R ₄ , R ₅ are alkyl groups, or hydroxy alkyl groups R ₆ is an alkyl group n is an integer of 2≤n≤3 x is an integer from 5 to 20