KR100821892B1 - A spinfinish oil composite for elastic synthetic fiber with excellent heat-stability - Google Patents

Abstract

The present invention relates to an emulsion composition for thermoplastic synthetic fibers having excellent thermal stability, characterized in that the thiodiglycolic acid diester compound of the general formula (I) is contained in an emulsion composition in an amount of 10 to 30% by weight.

-Below-

(Wherein R ₁ and R ₂ are alkyl groups having 4 to 18 carbon atoms, x and y are integers of 1 or 2, m and m 'are integers satisfying a relation of 2≤m + m'≤10, n And n 'are integers that satisfy the relation 2≤n + n'≤10.)

Emulsion composition of the present invention is excellent in smoothness and thermal stability can effectively prevent the generation of wool, tar and fume (Fume) during yarn production.

Emulsion Composition, Thermoplastic, Synthetic Fiber, Thermal Stability, Smoothness, Operability, Thioglycolic Acid Diester, Leveling Agent

Description

A spinfinish oil composite for elastic synthetic fiber with excellent heat-stability}

The present invention relates to an emulsion composition for thermoplastic synthetic fibers having excellent thermal stability. More specifically, it is excellent in thermal stability and smoothness, and can effectively prevent the generation of wool, tar, fume, etc. during the spinning process, and relates to an emulsion composition for synthetic fibers that can greatly improve yarn quality and operability. will be.

Conventional emulsion compositions for thermoplastic synthetic fibers have a composition in which an antistatic agent, an emulsifier and other ionic additives are mixed with a leveling agent which is a main component. As the leveling agent, higher fatty acid esters synthesized from fatty acids and alcohols, mineral oils, natural fats and the like are used, and as an antistatic agent, anionic surfactants or cationic surfactants such as alkylsulfonate salts and higher fatty acid sulfides are widely used.

At present, the emulsion composition of alkyl alkylate, which is a synthetic ester, is the most widely used, but in this case, the thermal stability of the emulsion composition is poor, so it is easily decomposed and deteriorated at around 200 ° C. There is a problem of being deposited to contaminate the fiber or to generate wool. In addition, non-uniform heat transfer to the fibers lowered the quality, workability and working environment of the yarn.

In order to improve the above problems, an emulsion composition using polyether having an alkylene oxide adduct as a smoothing agent is used, but in this case, the thermal stability is improved to some extent, but the smoothness is lowered, which causes severe mooring in the production of the yarn. There was a problem falling.

On the other hand, the emulsion composition using a higher fatty acid ester or mineral oil as a smoothing agent component has a good smoothness but lacks thermal stability, so there is a problem of poor smoke and tar generation, resulting in a decrease in productivity and yarn quality.

The present invention is to provide an emulsion composition for thermoplastic synthetic fibers having excellent thermal stability and smoothness at the same time to improve the operating properties, working environment and yarn properties during spinning.

The emulsion composition of the present invention for achieving such a problem is characterized in that the thiodiglycolic acid diester compound of the following general formula (I) is contained in the emulsion composition in an amount of 10 to 30% by weight.                     

-Below-

(Wherein R ₁ and R ₂ are alkyl groups having 4 to 18 carbon atoms, x and y are integers of 1 or 2, m and m 'are integers satisfying a relation of 2≤m + m'≤10, n And n 'are integers that satisfy the relation 2≤n + n'≤10.)

In the emulsion composition of the present invention, in addition to the leveling agent of Formula (I), a leveling agent component such as mineral oil and / or a higher fatty acid ester may be included.

The content of the thioglycolic acid diester compound in the emulsion composition is 10 to 30% by weight. If it is less than 10% by weight, sufficient thermal stability is not expressed. If it exceeds 30% by weight, the emulsion of the aqueous emulsion is poor and the smoothness is lowered. In this case, the occurrence of moor is increased.

It is preferable that the number-of-moles of the alkylene oxide added to 1 mol of the thiodiglycolic acid diester compounds of the said General formula (I) are 4-20 mol. If it is less than 4 moles, smoke may be severe, and if it exceeds 20 moles, smoothness may be greatly reduced.

In addition, it is preferable that [n + n '/ m + m'] is 0.25-1 in said Formula (I). If it is less than 0.25, the weaving process becomes difficult due to friction between the yarns, and if it exceeds 1, the emulsification property may be worsened.

The emulsion composition of the present invention may be composed of a leveling agent, an antistatic agent, an emulsifier and other additives including the thiodiglycolic acid diester compound of the general formula (I).

Specifically, it is composed of thiodiglycolic acid diester compound of general formula (I), mineral oil, higher fatty acid ester, higher alcohol alkylene oxide adduct, polyethylene glycol, alkyl ester and alkyl phosphate or by adding polyether thereto May be

In the spinning process of the thermoplastic synthetic fiber, the emulsion composition of the present invention is treated to undrawn or drawn yarn discharged from the spinneret using an oil roller or an oil jet in a 5-15% aqueous emulsion state. At this time, it is more preferable to attach about 0.4 to 1.3% by weight of the stretched yarn or the unstretched yarn to improve the stretchability and prevent smoke and tar.

Hereinafter, the present invention will be described in detail through Examples and Comparative Examples. However, the present invention is not limited only to the following examples.

Example 1 to Example 3 and Comparative Example 1 to Comparative Example 2

The emulsion composition prepared as shown in Table 1 is slowly stirred sufficiently with hot water at 30 ° C. to obtain a 10% emulsion aqueous solution. The aqueous solution of the emulsion was attached to polyethylene terephthalate unstretched yarn (filament number: 36) wound at a speed of 1000 m / min by a conventional oil roller lubrication method, and the unstretched yarn was stretched at a stretch ratio of 4 times 75 Denier drawn yarn was prepared. At this time, the temperature of the heat roller was 85 degreeC and the heat setting was 160 degreeC. The results of evaluating the stability of the stock solution, taring rate, and cleaning cycle are shown in Table 2.

Emulsion composition composition ratio (% by weight) division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Thiodiglycolic acid diester compound of Formula (I) (n + n '= 10, m + m' = 10) 15 10 20 - - Mineral oil 20 22 15 20 40 Higher fatty acid esters 20 23 15 25 15 Higher alcohol alkylene oxide adduct 30 28 30 25 20 Polyethylene glycol (molecular weight 600) alkyl ester 10 10 5 10 10 Polyether - - 10 13 10 Alkyl phosphate 5 8 5 7 5

Emulsion adhesion rate and operability evaluation result division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Emulsion adhesion rate (wt%) 0.83 0.90 0.87 0.83 0.83 Yarn Focus Great Great Good Good usually Sacrifice Great Great Good usually usually Stock Stability Great Great Great Bad usually Oil painting stability Great Great Great Bad Good Permeability (seconds) 2.25 2.32 2.03 3.20 3.92 Volatilization loss (%) 18.75 19.21 20.79 22.43 21.25 Tar rate (%) 0.72 0.93 0.68 1.30 2.01 Cleaning cycle (days) 27 23 22 20 10 Daejeon Great Great Great Great Great Mou Great Great Great Bad usually Fume Count 22 25 21 200 250

In the present invention, various operability was evaluated as follows.

Emulsion adhesion rate (wt%) : measured by the weight ratio of emulsion extracted per yarn weight.

· Focusability: The drawn yarn was measured under the condition of 50g load per 50g using a TEM-type force tester (Eiko Co., Ltd.).

· Sacrificiality : The percentage of yarn defects generated during the spinning and drawing process was relatively evaluated.

Stock stability : After one week at room temperature, the stock stability was visually evaluated.

Emulsification stability : 10% by weight of the aqueous emulsion solution was left at 30 ℃ for 1 day and then evaluated visually.

Permeability : 10% by weight of the aqueous emulsion solution was measured by the canvas method at 30 ℃.

Volatilization loss : 180 ℃ × 4 hours

Tar rate (%) : The remaining emulsion was washed with acetone after the volatilization loss.

· Chargeability: The frictional electrification of the traveling yarn that runs the stretched yarn at a speed of 300m / min was measured by current collector potentiometer.

Excellent: Friction band voltage 0 ~ 1V Normal: Friction band voltage 1 ~ 2V

Poor: Tribo-voltage 3V or more

· Cattle : The number of caterpillars per 2000 meters of yarn was measured and evaluated based on the following criteria.

Excellent: 0 ~ 1 cows Medium: 2 ~ 4 cows

Poor: 4 or more cows

Fume number : 0.1 g of emulsion solution was heated to a 220 ° C. heater plate for 1 minute and measured for 1 minute with a dust indicator.

The present invention is excellent in thermal stability and smoothness at the same time can effectively prevent the occurrence of cows during fiber spinning, can greatly improve the yarn quality and workability. In addition, the present invention can suppress the generation of fumes and tar can greatly improve the working environment and can extend the cleaning cycle.

Claims (3)

The thiodiglycolic acid diester compound of the following general formula (I) is contained in an emulsion composition, 10 to 30% by weight, an emulsion composition for thermoplastic synthetic fibers having excellent thermal stability. -Below-

(Wherein R ₁ and R ₂ are alkyl groups having 4 to 18 carbon atoms, x and y are integers of 1 or 2, m and m 'are integers satisfying a relation of 2≤m + m'≤10, n And n 'are integers that satisfy the relation 2≤n + n'≤10.) The emulsion composition for thermoplastic synthetic fibers having excellent thermal stability according to claim 1, wherein 4 to 20 mol of alkylene oxide is added to 1 mol of the thiodiglycolic acid diester compound. delete