Cationic dye dyeable polyester and preparation method thereof

A cationic dye, polyester technology, applied in the direction of one-component polyester rayon filament, can solve the problems of low polyester polymerization degree, low yarn strength, can not effectively reduce the thickening effect, etc., to achieve good dyeability, Good heat resistance and good spinnability

Inactive Publication Date: 2014-01-15
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, the addition of the above substances cannot effectively weaken the thickening effect caused by sulfonate groups, the degree of polymerization of polyester is still low, and the yarn strength made of polyester is also low

Method used

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  • Cationic dye dyeable polyester and preparation method thereof
  • Cationic dye dyeable polyester and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Add 12200g of terephthalic acid (TPA) and 4500g of ethylene glycol (EG) into the esterification kettle, stir and feed them completely within 4 hours. When the esterification reaction rate reaches over 97wt%, the prepared terephthalic acid (TPA) The ethylene formate oligomer (BHET) is moved into the polymerization vessel. Then, the EG solution of ethylene glycol isophthalate-5-sodium sulfonate (SIPE) equivalent to 2800ppm of the total polyester weight based on S element is added to the polymerization kettle, and the total weight of polyester equivalent to 27ppm based on Li Of lithium acetate, 250ppm of manganese acetate equivalent to the total weight of polyester, and 0.5wt% of poly1,2-propylene glycol (PPG, M n =2000) polymerization reaction, and other additives added at the same time are antioxidant tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester (IR1010) 11.25g, two trioxide Antimony 7g, titanium dioxide 80.8g. In the end, 15000g of c...

Embodiment 2～7

[0051] The addition amount of each substance was changed, and the method was the same as in Example 1 to prepare cationic dyeable polyester. The specific addition amount and the test results of the polyester are shown in Table 1.

Embodiment 8～10

[0053] In the esterification reaction stage, PPG was added, and the method was the same as that of Example 1 to prepare cationic dyeable polyester. The addition amount of PPG and other substances and the test results of the polyester are shown in Table 1.

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Abstract

The invention discloses a cationic dye dyeable polyester and a preparation method thereof. The polyester is obtained by copolymerizing p-phthalic acid, glycol, poly[oxy(methyl-1,2-ethanediyl)] and ethyleneglycol m-phthalate having a metal sulfonic group under the action of an alkali metal element-containing catalyst, and the polyester also contains a manganese element and an alkali metal element. The preparation method of the polyester comprises the following steps: carrying out an esterification reaction of terephthalic acid and glycol to obtain an oligomer, and carrying out condensation polymerization of the oligomer to prepare the polyester, wherein poly[oxy(methyl-1,2-ethanediyl)] is added in the esterification and/or condensation polymerization phase, and the ethyleneglycol m-phthalate having a metal sulfonic group, a manganese compound and the catalyst containing an alkali metal element are mainly added in the condensation polymerization phase.

Description

Technical field [0001] The invention relates to a cationic dyeable polyester and a preparation method thereof. Background technique [0002] General polyethylene terephthalate fibers can only be dyed with disperse dyes or azo dyes, and there is a problem that it is difficult to obtain bright and dense hue. In order to solve this problem, people have studied various modified polyethylene terephthalate. [0003] For example, Japanese Patent Publication No. 34-010497 discloses a polyester containing isophthalic acid structural units containing sulfonic acid metal salt groups, which can be deeply dyed with basic dyes. However, the fabric obtained by blending and weaving this polyester fiber with natural fiber, polyurethane fiber, etc. cannot be dyed; in addition, due to the serious thickening effect of the sulfonate group, the melt viscosity rises rapidly during the polymer reaction However, the low degree of polymerization leads to problems such as high pressure rise of the spinning...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/688C08G63/83C08K5/098D01F6/92
Inventor 成娟李旭望月克彦
Owner TORAY FIBER RES INST(CHINA) CO LTD
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