KR880001641B1 - Polyester compound fiber's making method - Google Patents

Abstract

The polyester yarn was prepd. by spinning the mixture of polyester which was prepd. by polymerization of dimethyl terephthalate, metal sulfonate [(I); R, R'= -COOH, -OCOR", -COOR2, COO(CH2)--OH, -O-(CH2)- -[O-(CH2)4- m-OH; m=1-4, R2=C5 lower alkyl, A=trivalent aromatic hydrocarbon, M=alkali metal) and polyethylene glycol, block polyetheramide and homopolyamide. The result fiber had good fastness and dyeing property.

Description

Manufacturing method of polyester composite fiber having erosive and antistatic properties

The present invention relates to a modified polyester composite fiber having both dichroic and antistatic properties. More specifically, a mixture of block polyetheramide and homopolyamide which impart antistatic properties to the inside of modified polyester which imparts salting property is uniformly distributed so that an excellent antistatic performance can be obtained even when an antistatic component is loaded. It relates to a method for producing a polyester composite fiber having performance and antistatic properties. As is already known, polyester fiber has been applied to various fields because of its excellent physical and chemical properties.

Nevertheless, polyester-based fibers are difficult to dye and are difficult to expect vivid colors. In order to improve this, Japanese Unexamined Patent Application Publication Nos. 44-905 and 44-911 disclose the techniques for blending dibasic polyester at the core of a composite fiber and block polyether amide having antistatic properties to the outside. It is.

However, the problem that cannot be solved with this technique is 1) poor desolvability due to inter-fiber welding on single yarn welding and unstretched yarn during spinning, and 2) poor compatibility between core polyester and external components. There is a problem that the antistatic component is eliminated in the stretching and flamming process, etc., thereby lowering the yarn properties, and 3) the inner tube fastness decreases when dyed in a disperse dye.

There is also a technique related to a polyester-based composite fiber comprising a polyester containing polyalkyl ether or a polyester containing polyalkylene ether and an anionic surfactant as a core and a polyester as an outer component.

This technique improves the above-mentioned drawbacks caused by the use of block polyetheramides in the external components, but has the disadvantage of lacking antistatic performance.

In addition, Japanese Unexamined Patent Application Publication No. 52-31450 proposes to impart antistatic properties by blending a plastic polymer containing conductive key black in the core portion, but this has excellent antistatic performance but is colored black and due to severe deterioration of yarn properties. Due to its general purpose it cannot be used. In addition, Japanese Unexamined Patent Application Publication No. 55-128017 has a deep portion of a mixture of block polyether amide mixed with polyester as a method of imparting the dye transferability of the above-mentioned polyester-based electrostatic yarn, and 3.5 (carboxy) benzenesulfonate or its A method for producing a dibasic polyester-based antistatic composite fiber having an outer component of a polyester obtained by co-polymerizing a derivative in a polyester polymer with 1 mol% to 7 mol% is described.

However, this technique could solve the deficiencies of the conventional methods, but the mixture of block polyetheramide and polyester is poor in heat resistance, so that under the anesthesia, the chemical reaction such as hydrolysis during melt spinning causes severe poly anesthesia. Therefore, it is impossible to maintain excellent yarn properties as a polyester fiber in a process after severely receiving a physical external force such as deterioration of spinning efficiency and stretching and heating.

Summary of the Invention An object of the present invention is an improved manufacturing method for producing a polyester-based composite fiber having both dyeing and antistatic properties having excellent antistatic property and dyeing property while maintaining good physical and chemical properties of polyester by solving the above deficiencies of the prior art. To provide.

The present invention is described in detail below.

1 to 5 mol% of a metal sulfonate mixture of the formula (I) and a polyalkylene glycol having a number average molecular weight of 500 to 6000 with respect to a bifunctional carboxylic acid or ester thereof mainly containing terephthalic acid or dimeryl terephthalate 1 to 10 Copolymerization is carried out by adding the weight% to prepare a dibasic polyester resin (the (component) component).

, 또는

, 또는

, 또는 -O-(CH₂)^--[O-(CH2)^-]_m-OH이며, n, m은 1이상의 정수이고, 좋기로는 1내지 4의 탄소수를 갖는 것이다. R"는 탄소수 5이하의 저급알킬기이고, A는 3가의 방향족탄화수소이고, M은 알칼리 금속이다.Provided that R, R 'is -COOH, or

, or

, or

Or -O- (CH ₂ ) ^-- [O- (CH2) ^- ] _m -OH, n and m are integers of 1 or more, and preferably have 1 to 4 carbon atoms. R "is a C5 or less lower alkyl group, A is a trivalent aromatic hydrocarbon, and M is an alkali metal.

And a block polyetheramide copolymer having a melt viscosity of 5,000 to 10,000 by copolymerizing a monomer capable of forming polyamide with a polyalkylene glycol having a number average molecular weight of 2,000 or more and a terminal group of 95% or more of an amino group. Ingredient} is prepared.

Next, the homopolyamide component {(poly) component} having a molecular weight of 5,000 or more that can be completely mixed with the component (b) is well compatible with the component (b) and has good compatibility with the component (b). After branding at a certain ratio with (B) component, complete the present invention by uniformly distributing it by using complex spinning device inside (A) component which is a chlorinated component.

In the present invention, polyoxyalkyltenglycol used as a modifier to improve dyeability has increased affinity of the molecular chain to help dyeing of disperse dyes and basic dyes and to increase hygroscopicity, thereby having affinity with dyes.

As polyoxyalkylene glycol to be used, polyalkyl tenglycol, polytetramethylene glycol, etc. can be used, but polyethylene glycol is especially suitable.

The amount of addition should be 1 to 10% by weight relative to carboxylic acid or its ester, but 2.5 to 6% by weight is particularly suitable.

If the added amount is less than 1% by weight, it may not show satisfactory dyeing resistance, and if it is more than 10% by weight, heat resistance and light resistance may be drastically reduced, and thus excellent physical and chemical properties inherent in polyester cannot be expected. In addition, the molecular weight of the ethylene glycol used may be 500 to 6,000 and particularly preferably 600 to 4,000. If the molecular weight is 500 or less, the glycol reactivity in the polymer is irregular, and if the 6,000 or more, the secondary transition temperature can not be expected to be reduced, it is difficult to improve the dyeability.

And the composition ratio with respect to the total fiber weight between (B) and (C) component satisfy | filled the following formula.

bottom

(나)성분

5중량%0.5 wt%

(B) Ingredients

5 wt%

(나)성분+(다)성분

10중량%6 wt%

(B) component + (multi) component

10% by weight

(나)성분/(다)성분

10.1

(B) Component / (C) component

One

In the present invention, in order for (B) component + (C) component to be uniformly arranged inside the fiber concentrically about the fiber side, it should be less than 6% by weight or less than 10% by weight with respect to the whole fiber. It must be within to maintain a stable fiber shape in the post-processing process.

In addition, in order to exhibit good antistatic performance, the proportion of the whole fiber of the (B) component as the antistatic component should be 0.5% by weight to 5% by weight. If it exceeds 5% by weight, the saturation zone voltage within the frictional zone voltage of 300V is reached, so that an increase in the antistatic effect cannot be expected and only the physical properties of the polyester fiber are reduced.

In this case, however, the discharge amount of the copolymer falls within the minimum discharge amount range of the spinner, so that the supply of the polymer melt between the screw and the barrel is not smooth, so that normal spinning is impossible. Therefore, in the present invention, the component (C), which is excellent in compatibility with the component (B) and can be completely mixed and does not cause a chemical reaction between each other in the detention, is to be 0.1 to 1 times the component (B). Mixing with the components solved the difficulty of the spinning process.

Example 1-5

Dimethyl terephthalate, ethylene glycol, 5-sodiumsulfodimethyl isophthalate (2.7 mol%) Polyethylene glycol (7 wt%) with a number average molecular weight of 4,000 was added thereto, the temperature was raised to 280 ° C under reduced pressure, and then polycondensed under high vacuum. A polyma of the component was prepared, and a polyetherene glycol having a number average molecular weight of 3,500 was substituted with an amino group to synthesize a polyethylene ether amine under an alkali catalyst, and an appropriate amount of adipic acid and ε-caprolactam were mixed thereinto Synthesis of the block polyether amide (B) component with a melt viscosity of about 10,000 after polymerization is carried out, and the (B) component is blended with the homopolyamide (C) component, and then the mixture of the (B) component and the (C) component is a core component. As a component, (A) the components were arranged concentrically around the fiber axis. Table 3 shows the results of investigating the change of antistatic property, dyeing property and yarn property of three kinds of components by melt ratio in melt spinning machine.

As a result, in general, when the antistatic component was 2.5% by weight to 5% by weight, there was no difference in antistatic performance, and good yarn physical properties were observed as the antistatic component ratio was decreased. Further testing of the dyeing and fastnesses revealed that it has good dyeing and fastness. As a dyeing method, both basic dyes and spray dyes were dyed under normal pressure.

Comparative Example 1-2

As in Example 1-5, the components (A), (B) and (C) were prepared, and the ratios of (B) and (C) were changed to 0.05 and 2, respectively, using a small blender. After uniformly mixing for a minute, a yarn was prepared by disposing blends of component (B) and component (C) in a concentric manner within 10% by weight of the component (a) using a composite spinning device.

The physical properties and antistatic performance of the test company are shown in Table (1).

Table (1)

Claims (1)

Polyfunctional glycol acids mainly containing terephthalic acid or dimethyl terephthalate or esters thereof and polyethylene glycol having a number average molecular weight of 500 to 6,000 with 1 to 5 mol% of a metal sulfonate mixture represented by the following structural formula (I) 1 to 10% by weight of an addition copolymerization to prepare a di-chlorinated polyester resin {(additional component)} Below

Wherein R, R 'is -COOH, or

, or

, or

Or -O- (CH ₂ ) ^-- [O- (CH ₂ )-] _m -OH and n, m are integers of 1 or more, preferably 1-4. R "is a C5 or less lower alkyl group, A is a trivalent aromatic hydrocarbon group, M is an alkali metal. A block polyether amide copolymer {(component)} having a melt viscosity of 5,000 to 10,000 is prepared by copolymerizing a monomer capable of forming polyamide with polyethylene glycol having a horizontal molecular weight of 2,000 or more and a terminal group substituted by 95% or more of an amino group. In addition, (B) homopolyamide {(C) component} with a number average molecular weight of 5,000 or more is mixed with the following composition ratio, and then (A) component and (B) + (C) component are mixed again, and the complex salt A method for producing a polyester composite fiber having sex and antistatic properties. bottom 0.5 wt%

(B) Ingredients

5 wt% 6 wt%

(B) component + (multi) component

10% by weight 0.1

(B) Component / (C) component

One (Weight percent is relative to total fiber weight).