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Easy cation-dyeable polyester (ECDP) fibers and production method thereof

A polyester fiber and cationic technology, applied in normal pressure cationic dyeable polyester fiber and its production field, can solve the problems of unobvious practical value, cationic fiber dyeing conditions of high temperature and high pressure, and the inability to mix natural fibers such as wool

Inactive Publication Date: 2011-05-18
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cationic fiber dyeing requires high temperature and high pressure, and cannot be mixed with natural fibers such as wool
[0003] Patent CN02110770.X discloses a cationic dye easily dyeable copolyester and fiber. The polyester achieves dyeing effect by introducing sulfonic acid groups and cationic dye reflection, but the strength of the spun fiber is low and the practical value is not good. obvious
[0004] Patent 200410060520.8 discloses a method for preparing a copolyester dyed under normal pressure with cationic dyes. The polyester is dyeable under normal pressure by adding polycarboxylic acid or polyalkylene glycol. However, during the polymerization process of the polyester Using antimony trioxide as a catalyst, the waste liquid after polymerization reaction contains a large amount of heavy metal ions, causing serious pollution to the environment. Under the general trend of environmental protection in the future, it will be eliminated.

Method used

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  • Easy cation-dyeable polyester (ECDP) fibers and production method thereof
  • Easy cation-dyeable polyester (ECDP) fibers and production method thereof
  • Easy cation-dyeable polyester (ECDP) fibers and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The polyethylene glycol molecular weight is 1000, the addition amount is 1wt%, the amount of isophthalic acid-5-sodium sulfonate (SSIA) is 0.9wt%, and is produced by PC-50 as a catalyst, and the intrinsic viscosity is 0.62dl / g atmospheric pressure cationic dyeable polyester chips are dried to below 100ppm, the chips enter the screw through the silo and melt at a temperature of 290°C, the discharge volume is controlled by the metering pump, and the temperature is controlled by the spinning box at 290°C Spinning assembly in the lower part, spun nascent fibers, cooled and solidified under the condition of side blowing wind speed 20m / min, and then oiled the fibers evenly through the oiling nozzle to bundle the fibers and reduce friction, the oiling rate was 0.9%. The fibers that have been oiled and bundled pass through the spinning shaft and enter the first roller (1GR) at a speed of 1500m / min, and then enter the coiler for coiling after passing through the second roller (2...

Embodiment 2

[0048] The polyethylene glycol molecular weight is 4000, the addition amount is 1wt%, isophthalic acid-5-sodium sulfonate (SSIA) is 3.7wt%, and is produced by PC-50 as a catalyst, and the intrinsic viscosity is 0.65dl / g normal pressure cationic dyeable polyester chip is dried to below 100ppm, carries out spinning stretch processing with embodiment 1, under the condition that elongation ratio is 2.12, makes elongation reach 38.2%, strength reaches 2.97cN / dtex, the strength and elongation product reaches 18.4, the monofilament fineness is 1.75dtex, and the boiling water shrinkage rate is 7.6%. It is a cationic dyeable polyester fiber under normal pressure. The fabric made of this fiber uses cationic blue dye with a concentration of 5%. After dyeing under normal pressure below 100°C, the dye uptake rate reaches over 90%, and its hue L value is below 25; using cationic blue dye, the concentration 0.3%, after dyeing at normal pressure below 100°C, its light resistance can reach l...

Embodiment 3

[0050] The polyethylene glycol molecular weight is 1000, the addition amount is 4wt%, isophthalic acid-5-sodium sulfonate (SSIA) is 3.7wt%, and is produced by PC-50 as a catalyst, and the intrinsic viscosity is 0.60dl / g normal pressure cationic dyeable polyester chips are dried to below 100ppm, and the same as in Example 1 is carried out for spinning and stretching. Under the condition of elongation ratio of 2.23, the obtained elongation reaches 40.6%, and the strength reaches 2.90cN / g. Atmospheric pressure cationic dyeable polyester fiber with dtex, strength and elongation product up to 18.5, monofilament fineness of 0.5dtex, boiling water shrinkage rate of 5.1%. The fabric made of this fiber uses cationic blue dye with a concentration of 5%. After dyeing under normal pressure below 100°C, the dye uptake rate reaches over 90%, and its hue L value is below 25; using cationic blue dye, the concentration 0.3%, after dyeing at normal pressure below 100°C, its light resistance ca...

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Abstract

The invention discloses novel easy cation-dyeable fibers prepared by carrying out melt spinning on polyester obtained by copolymerizing terephthalic acid, glycol, poly-glycol and m-phthalic acid sulfonate and catalyzing the copolymer with a titanium catalyst. The fibers provided by the invention have normal temperature and pressure dyeability of cationic dyes, have bright colors, fine handfeel and good color fastness to light after being dyed, have environmental safety and can be effectively produced in mass.

Description

technical field [0001] The invention relates to a normal-pressure cationic dyeable polyester fiber and a production method thereof. Background technique [0002] Polyester fiber is a popular textile material that not only has high strength, high modulus, good elasticity and light fastness, but also has good dimensional stability and long-lasting creases after ironing. However, due to the lack of functional groups directly combined with dyes in the molecular chain, it can only be dyed with disperse dyes, and because polyester has high crystallinity and compact structure, although there are ester groups that can form hydrogen bonds with disperse dyes, dye molecules can only be dyed at high temperatures. Only under high pressure can it enter the interior of the fiber, and the color, style and performance of the product are limited. In order to solve the problem of polyester fiber dyeing, scholars at home and abroad have done a lot of research. The main methods are: dope colori...

Claims

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Application Information

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IPC IPC(8): D01F6/84D06P3/52C08G63/85C08G63/688D01D5/12D02J1/22
Inventor 黄儒曹海兵藤森稔
Owner TORAY FIBER RES INST(CHINA) CO LTD
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