KR920005896B1 - The treating agent for polyester filament yarn having a superior color forming property - Google Patents

Abstract

The treating agent for a polyester filament yarn is composed of 5- 10 wt.% fatty acid alkylether ester, 35-45 wt.% polyalkylether, 5-10 wt.% polyoxy ethylene alkylaryl ether, 5-10 wt.% alkylamine ether, 2-6 wt.% alkyl sulfonate, 2-4 wt.% alkyl sulfosuccinate metal salt and 25-45 wt.% polyoxy propylene ethylene alkyl ehter. The treating agent is used in the mfr. of a polyester fiber, and has an excellent developing property and an inorganic particle-removing effect for the fiber.

Description

Polyester filament yarn treatment agent superior in color development

The present invention is to produce a fiber by dispersing silicon dioxide fine particles or phosphate-based compound inside the polyester polymer and then to reduce the alkali color loss in the fiber to improve the color development and feel by eluting inorganic fine particles on the fiber surface through alkali reduction The present invention relates to a fiber treating agent for improving workability during dyeing and processing processes, by facilitating removal of inorganic fine particles from the surface of fibers during fiber and preventing reattachment.

Conventionally, a conventional treatment agent for polyester filaments is used as a fiber treatment agent to improve color development, and mineral oils, polyethers, fatty acid monool esters, fatty acid polyol esters, dicarboxylic acid monool esters, and fatty acid salts as oil film strengthening agents are used as lubricants. Sulfate type, sulfonate type, phosphate type, carboxylic acid type, alkylamine salt type, anmonium salt type, betaine type, amino acid type as an antistatic agent, alkylarylethocyanate polyoxy epylene alkylamine as an emulsifier, Polyethylene glycol fatty acid ester is used, but there is a problem to remove by adding a separate surfactant to facilitate the removal of particles when washing with alkali after washing. Alkaline weight loss processing is typically performed in a heated aqueous solution of caustic soda, in which hydrolyzates of polyester fibers are produced, while silicon dioxide and phosphate dispersed in polyester dissolve in alkali and escape from the fiber surface.

Therefore, the fabric after weight reduction should be washed with water to ensure that there is no residue on the fabric. However, the alkali solution in which silicon dioxide and phosphate are dissolved is firmly attached to the fiber surface by physical force, so that only a part of it is removed upon washing with water and remains on the fiber surface. As such, when silicon dioxide and phosphate remain on the fiber surface, the dyeing property is lowered, and the effect of removing particles and preventing reattachment of particles is reduced. In addition, sandiness occurs during spinning, resulting in poor workability, and raising or shearing occurs during stretching, resulting in a decrease in yield.

The present inventors have examined various factors affecting the removal of aggregates of silicon dioxide and phosphate on the fiber surface after washing the alkali, and found that the properties of the emulsions treated in the spinning process have a great influence. The tanning agent adsorbed onto the fiber surface is adsorbed and oriented on the fiber surface, and even during alkali weight loss processing, it is adsorbed and oriented on the surface of silicon dioxide and phosphate liberated on the surface of the hydrolyzed fiber. Allow phosphate to be removed. It is an emulsion monocomponent which has good silicon dioxide and phosphate dropping performance in alkaline aqueous solution and satisfies the above conditions and has good spinning, drawing and weaving process passability, so that it does not decompose during alkaline weight loss treatment and shows strong interfacial activity in washing. The following ingredients were found. Examples of the oily monocomponent exhibiting surfactant activity include polyoxy ethylene alkyl ether, polyoxy ethylene alkyl aryl ether, alkyl propylene oxide, ethylene oxide block copolymer, alkyl sulfonate metal salt and the like. On the other hand, mineral oils, alkyl alkylates, carbonates, polyoxyethylene alkyl esters, etc., which are insoluble in the aqueous solution have weak alkali resistance, resulting in poor decay of silicon dioxide and phosphate.

In the present invention, as a result of examining the treatment method of polyester unstretched filament yarn having excellent removal ability of silicon dioxide and phosphate aggregates at the time of washing and excellent spinning, stretching and weaving process as an oily agent having excellent color development, spinning 5 to 10 weight percent fatty acid alkyl ether esters, 35 to 45 weight percent polyalkyl ethers, 10 to 20 weight percent polyoxy ethylene alkyl aryl ethers and alkyl amine ethers, 4 to 10 alkyl sulfonate and alkyl sulfosulcinate metal salts The present invention was made by attaching 0.5 to 1.0% by weight of the polyester unstretched filament with respect to the weight of the polyester unstretched filament yarn by weight percent, 25 to 45 weight percent of the polyoxypropylene ethylene alkyl ether, and the blended oil agent.

In the present invention, the fatty acid alkyl ether ester has both a hydrophobic group and a hydrophilic group in one molecule, and thus is suitable for achieving the object of the present invention as compared with any conventional synthetic ester component. Particularly, both ends of the molecule are sealed with an alkyl group, so that the fiber-metal Due to the low coefficient of kinematic friction, there is an advantage of good spinning and stretching weaving process of polyester unstretched filament yarn. However, when blending more than 10% by weight of fatty acid alkyl ether ester, the generation of fatty acid metal salts is increased due to the cleavage of ester bonds in the molecule, and the effect of the present invention is lowered, and at less than 5% by weight of silicon dioxide and phosphate aggregates. The removal effect is significantly lowered.

The polyoxypropylene ethylene alkyl ether used in the present invention is very stable in a heated aqueous solution of caustic soda because its molecular structure is an ether bond, and as hydrophobic group, one or both ends of the molecular chain are added with an alkyl group or propylene oxide, and a hydrophilic group As ethylene oxide is added, it is possible to exhibit an effective surface active force upon washing with water. In addition, polyoxy propylene ethylene alkyl ether is more effective the more the number of carbon atoms of the added alkyl group, and there is a difference in the removal effect of silicon dioxide and phosphate aggregates depending on the propylene oxide and ethylene oxide addition ratio and molecular weight. Polyoxypropylene ethylene alkyl ether is effective to blend 25 to 45% by weight of the components having an average molecular weight of 550 to 2,500 in consideration of the removal of silicon dioxide and phosphate aggregates, the smoothness and thermal stability as an emulsion. In addition, suitable components for removing silicon dioxide and phosphate aggregates while effectively emulsifying fatty acid alkyl ether esters in the present invention include higher alcohol ethylene oxide adducts. These components are relatively stable in a heated aqueous solution of caustic soda, and have a strong surfactant upon washing. It is suitable for achieving the object of the present invention because it exerts a force. Polyoxy propylene ethylene alkyl ether is more effective the higher the carbon number of the alkyl group derived from the higher alcohol, has a cloud point at room temperature (Cloudy Point) is easy to drop the silicon dioxide or phosphate is suitable for achieving the object of the present invention. In the case of blending more than 45% by weight of polyoxypropylene ethylene alkyl ether component, a large amount of tar is generated on the hot plate surface of the drawing machine. There is a disadvantage to be poor.

In addition, it is preferable to mix 2 to 4% by weight of an alkylsilophosphinate metal salt in order to improve the passability of each process of polyester unstretched filament yarn having good color development, regardless of the removal property of silicon dioxide and phosphate alkaline solution. Above%, metal salts increase friction coefficients, resulting in poor smoothness, and below 2% by weight, permeability and antistatic properties are deteriorated. Alkyl sulfonate is suitably 2 to 6% by weight, and at 6% by weight or more, the friction coefficient becomes high due to the metal salt, resulting in poor smoothness. In the case of blending more than 45% by weight of polyalkyl ether, the friction coefficient becomes high due to poor smoothness. When blending less than 35% by weight, dispersibility and emulsification are poor, resulting in poor uniform adhesion. It is suitable to mix 5 to 10% by weight of polyoxy ethylene alkyl aryl ether, and the fine friction and dynamic friction of fibers / fibers are increased at 10% by weight or more, and the concentration and emulsification are poor at less than 5% by weight. 5 to 10% by weight of alkyl amine ether increases the friction of fibers / metals and less than 5% by weight of alkali resistance.

When the emulsion having the composition described above is treated with polyester unstretched filament yarn, most of the silicon dioxide and phosphate agglomerates are removed at the initial washing time after washing the alkali. It was found that the problems caused by the use of surfactants and the surfactants were solved, and the effect of removing particles and preventing reattachment of particles was also greatly improved.

Hereinafter, the present invention will be described in detail with reference to the following Examples. The spinning emulsion of the present invention having the composition ratio as shown in Table 1 was melted and spun at a spinning speed of 600 m / min. Undrawn yarn of 150 denier was made and stretched 3.5 times at 110 ℃ operating temperature to obtain a drawn yarn. The comparative spinning emulsion was also treated under the same conditions as above to obtain a drawn yarn. These stretched yarns were knitted with a circular knitting machine to make test pieces, subjected to alkali weight loss treatment, and washed with water. At this time, the residual refining treatment liquid was measured by UV absorbance using a UV spectrometer.

Residual refining solution evaluation method

[1] evaluation conditions

1) Weaving at 1cm intervals with weft

2) 4% NaOH shaft (100 ℃ × 30min)

3) shaking up and down 50 times

[2] evaluation methods

(1) silicon dioxide

1) Wavelength: 710nm, 20mm cell

2) Dropping Rate 91 ~ 100%: Grade A

81-90%: Class B

71-80%: Grade C

Below 70: Class D

(2) phosphate

1) Wavelength: 740nm, 10mm Cell

2) Dropping Rate 91 ~ 100%: Grade A

81-90%: Class B

71-80%: Grade C

Below 70: Class D

[Examples 1 and 2]

0.5 percent to undrawn yarn after mixing fatty acid alkyl ether esters, poly alkyl ethers, poly oxyethylene alkyl aryl ethers and chelkyamine ethers, alkylsulfonates and alkylsulfo lycinate metal salts, polyoxy propylene ethylene alkyl ethers, To 1.0% by weight was attached and mixed in the composition shown in Table 1, Table 2 shows the drop off rate and workability evaluation results of the residual refining treatment solution.

Comparative Example 1

Except for the addition of 1 part of fatty acid alkyl ether ester was carried out in the same manner as in Example 1 and the composition is shown in Table 1 and the results are shown.

Comparative Example 2

Except for adding 27 parts of polyalkyl ether, the same process as in Example 1 was carried out. The composition is shown in Table 1 and the results are shown in Table 2.

Comparative Example 3

Except for adding 2 parts of polyoxy ethylene alkyl aryl ether and 3 parts of alkylamine ether, the same procedure as in Example 1 was carried out. The composition is shown in Table 1 and the results are shown in Table 2.

Comparative Example 4

Except for adding 8 parts of alkyl sulfonate and 5 parts of alkyl sulfonuccinate metal salt, the same process as in Example 1 was carried out. The composition is shown in Table 1 and the results are shown in Table 2.

Comparative Example 5

Except for the addition of 21 parts of polyoxy propylene ethylene alkyl ether was carried out in the same manner as in Example 1 and the composition is shown in Table 1 and the results are shown in Table 2. The unit of numerical value in an Example is a part and it means a weight part.

TABLE 1

TABLE 2a

TABLE 2b

* A: Excellent B: Good C: Normal D: Poor

Claims (1)

5-10 wt% fatty acid alkylether ester, 35-45 wt% pulleyalkylether, 5-10 wt% pulleyoxy ethylene alkylaryl ether, 5-10 wt% alkyl amine ether, 2-6 wt% alkyl sulfonate, alkyl A polyester filament yarn treating agent having good color development, comprising 2 to 4% by weight of sulforesinate metal salt and 25 to 45% by weight of polyoxypropylene ethylene alkyl ether.