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Cationic dye deep dyeing copolyester at normal pressure and method for producing same

A cationic dye, atmospheric deep dyeing technology, applied in the field of cationic dye atmospheric deep dyeing copolyester, can solve the problems of poor dyeing performance, small polarity, no dye seat, etc., and achieves anti-pilling performance, high Shrinkage, soft touch effect

Inactive Publication Date: 2009-09-09
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, although the physical and mechanical properties and comprehensive wearability of polyester fibers are excellent, due to the regular chemical structure of polyester macromolecules, high crystallinity and orientation, low polarity, and lack of hydrophilicity, the bending length of polyester is There is no gap between the chain molecules that can properly accommodate dye molecules, so it is difficult for dye particles to enter the amorphous region of the fiber, and there is no dye seat on the polyester macromolecule, resulting in poor dyeing performance, and there are few types of dyes that can be used. Polyester fiber Only disperse dye carrier dyeing, high temperature dyeing and hot melt dyeing can be used

Method used

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Examples

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Effect test

Embodiment

[0020] The present invention is further illustrated by the following examples, but the present invention is not limited to these examples.

[0021] Biomaterial source Ethylene glycol: produced by Changchun Dacheng Group, carbon source is corn, purity: 97%. The above-mentioned ethylene glycol was heated at 190°C for 2 hours and then filtered with activated carbon to obtain ethylene glycol with a transmittance of 65% at a wavelength of 250nm and a transmittance of 90% at a wavelength of 300nm.

[0022] Terephthalic acid: produced by Yangzi Petrochemical in China, polymer grade.

[0023] Dimethyl terephthalate: produced by Fiber Intermediate Products Co., Iran

[0024] Petroleum source Ethylene glycol EG: produced by Yangzi Petrochemical Company, the source of carbon element is petroleum, purity: more than 99%.

Embodiment 1

[0028] Using semi-continuous polyester polymerization equipment, add dimethyl terephthalate and biological ethylene glycol EG at a molar ratio of 1:1.9 and add catalyst cobalt acetate (COA) at the same time, the amount of catalyst added is two terephthalate 0.05% of the weight of methyl ester, stirred and esterified at 240-250°C for 3 hours, and when the water output reached 90% of the theoretical value, added ethylene diisophthalate containing 2.4 mole percent of dimethyl terephthalate The ethylene glycol solution of alcohol ester-5-sodium sulfonate and PEG1000 equivalent to 1% weight of dimethyl terephthalate carry out polycondensation reaction, add other conventional catalysts (such as antimony trioxide Sb O , acetic acid cobalt etc., wherein, antimony trioxide Sb2O3 addition is 0.03% of dimethyl terephthalate weight, the addition of cobalt acetate is 0.015% of dimethyl terephthalate weight) carry out polymerization reaction, temperature control At 270-300°C, the degree of ...

Embodiment 2

[0030]Using semi-continuous polyester polymerization equipment, add dimethyl terephthalate and biological ethylene glycol EG at a molar ratio of 1:1.9 and add catalyst cobalt acetate (COA) at the same time, the amount of catalyst added is two terephthalate 0.05% of the weight of methyl ester, stirred and esterified at 240-250°C for 3 hours, and when the water output reached 90% of the theoretical value, added ethylene isophthalate containing 3.6 mole percent of dimethyl terephthalate Ethylene glycol solution of alcohol ester-5-sodium sulfonate and PEG1000 equivalent to 1% weight of dimethyl terephthalate carry out polycondensation reaction, add other catalysts (such as antimony trioxide Sb2O3, cobalt acetate etc., wherein, the addition of antimony trioxide Sb2O3 is 0.03% of the dimethyl terephthalate weight, and the addition of cobalt acetate is 0.015% of the dimethyl terephthalate weight) to carry out the polymerization reaction, and the temperature is controlled at 270-300°C...

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Abstract

The invention relates to a cationic dye deep dyeing copolyester at normal pressure and a method for producing the same, and mainly relates to copolymerization of biologically prepared ethylene glycol, a monomer of dimethyl terephthalate, an alkali salt of isophthalic acid glycol ester-5-sulfonic acid and PEG1000. When the prepared copolyester is co-mixed with the common PET for spinning, the fluidity and the spinnability are both improved; and the deep dyeing of cationic dyes at normal pressure can be adopted, so that the defect that the PET can only be dyed by disperse dyes at high temperature and high pressure is overcome.

Description

Technical field: [0001] The invention relates to a cationic dye normal-pressure deep-dyeing copolyester and a production method. Background technique: [0002] Polyethylene terephthalate (PET) polyester fiber is currently the world's largest synthetic fiber variety, and the production capacity in mainland China alone in 2005 was over 13 million tons. Ethylene glycol is the main raw material for the manufacture of PET polyester fiber, and about 0.35 tons of ethylene glycol is needed to manufacture one ton of PET polyester fiber. [0003] So far, the world's major ethylene glycol production companies basically use petroleum as raw materials, and the production of one ton of ethylene glycol involves more than 6 tons of petroleum raw materials. Some ethylene glycol production units in my country are also petrochemical systems. The introduction of foreign technology and complete sets of equipment mostly produces ethylene glycol by ethylene oxide pressurized hydration and cataly...

Claims

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Application Information

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IPC IPC(8): D01F6/84C08G63/688D06P3/52
Inventor 杨娟盛思义李旭本田圭介
Owner TORAY FIBER RES INST(CHINA) CO LTD
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