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Atmospheric pressure cationic dyeable polyester and its production method and use

A technology of cationic dyes and production methods, applied in the field of atmospheric pressure cationic dyeable polyester and its production and application, achieving the effects of high melting point, good heat resistance and good spinnability

Inactive Publication Date: 2011-11-30
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, currently used polyester catalysts contain more or less heavy metals and toxic elements that are harmful to the human body, and it is difficult to meet the requirements of corresponding laws and regulations

Method used

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  • Atmospheric pressure cationic dyeable polyester and its production method and use
  • Atmospheric pressure cationic dyeable polyester and its production method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Add 15000g of DMT (dimethyl terephthalate) and 8600g of EG (ethylene glycol) into the esterification kettle, then add 415g of dimethyl isophthalate (AD2100) containing sulfonic acid groups, and then add 150g of polyethylene glycol (PEG4000) with a molecular weight of 4000, and 2.5g of catalyst titanium compound PC-50, and 90g of catalyst magnesium acetate, while adding 150g of catalyst basic lithium acetate, stirred and heated up to 240 degrees within 4 hours; Through the judgment of the by-products, when the esterification reaction rate reaches more than 97%, the prepared BHT oligomer is moved into the polymerization kettle; at room temperature, the phosphorus stabilizer trimethyl phosphate is first added, and then the matting agent titanium dioxide is added; then , carry out decompression and temperature rise, and use conventional polyester polycondensation method to carry out polymerization, so as to obtain normal pressure cationic dyeable copolymer.

[0039]The intr...

Embodiment 2

[0050] On the basis of Example 1, the addition amount of PEG4000 is controlled so that the content of the alkylene glycol group is 6%; specifically as shown in Table 1, the heat resistance of the copolyester within the scope of the present invention is good. There will be no broken filaments during the spinning process, and the fiber fabric has good dyeability.

Embodiment 3

[0052] On the basis of Example 1, the amount of PEG4000 added was controlled so that the content of the alkylene glycol group was 10%; details are shown in Table 1.

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Abstract

The invention discloses a normal-pressure cationic dye-dyeable polyester and its production method and application. The polyester is composed of dimethyl terephthalate, ethylene glycol, polyalkylene glycol and metal sulfonate groups. The group of dimethyl isophthalate is copolymerized under the catalysis of soluble titanium compounds; relative to the weight of polyester, the content of sulfur in polyester is 300-11000ppm, and the content of alkylene glycol groups is 0.1-10wt%, the content of soluble titanium element is 1-1000ppm, and the content of antimony element is less than 3ppm. The present invention uses a non-toxic and environment-friendly titanium compound as a catalyst, and the obtained polyester has the characteristics of high melting point, high thermal stability, and good spinnability, and the fiber fabric produced by it has good dyeability, and has Atmospheric dyeability.

Description

technical field [0001] The invention relates to a cationic dye-dyeable polyester under normal pressure, its production method and application. Background technique [0002] Polyester obtained by copolymerization of aromatic dibasic acid and aliphatic diol is widely used in resin, fiber, film and other fields. At present, people pay more and more attention to environmental protection and energy saving. In terms of fiber application, polyester that can be dyed with cationic dyes at normal pressure and low temperature has become a new demand. [0003] As some known copolyester polymers and copolyester fibers that can be dyed with cationic dyes at atmospheric pressure and at a temperature of 100 ° C or lower, the Chinese patent CN101298493 of Hyosung Corporation discloses that they can be dyed in the atmosphere Copolyester polymer dyed with cationic dye under pressure, method for its manufacture, and copolyester fiber obtained therefrom. Specifically, a copolyester polymer is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/688C08G63/85D01F6/84
Inventor 柏立军杨娟望月克彦
Owner TORAY FIBER RES INST(CHINA) CO LTD
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