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Polyesteramide, preparation method thereof and fiber

A technology of polyester amide and amidation reaction, applied in the direction of single-component polyamide rayon, etc., can solve the problems of affecting the performance of subsequent fibers, yellowing of polyester amide slices, etc., and achieve outstanding performance, good elongation at break The effect of long rate and high dye uptake rate

Active Publication Date: 2020-10-27
CATHAY R&D CENT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the yellowing of polyester amide slices synthesized by the above means is serious, which affects the performance of subsequent fibers.

Method used

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  • Polyesteramide, preparation method thereof and fiber
  • Polyesteramide, preparation method thereof and fiber
  • Polyesteramide, preparation method thereof and fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065]Under the condition of nitrogen protection, add 16.0kg terephthalic acid and 7.48kg ethylene glycol into a 100L esterification reaction kettle, add 7.8g ethylene glycol antimony catalyst, raise the temperature to about 260°C for reaction, and distill low Boiling point component, when the reaction is carried out for about 300 minutes, the low boiling point fraction reaches 98% of the theoretical amount, the esterification reaction is completed, and the stabilizer trimethyl phosphate 4.86g is added to the esterification reaction kettle, and then the prepared hexadiene Acid-pentamethylenediamine aqueous solution (mass concentration is 30%, wherein the mass of adipate-pentamethylenediamine salt is 480g), continue stirring at about 260°C for about 10 minutes. Then transfer the material in the esterification reaction kettle to the polycondensation reaction kettle under the condition of nitrogen protection, raise the temperature to 280°C, and evacuate to 1kPa, and after about 1 ...

Embodiment 2

[0067] Under the condition of nitrogen protection, add 16.0kg terephthalic acid and 7.48kg ethylene glycol into a 100L esterification reaction kettle, add 7.8g ethylene glycol antimony catalyst, raise the temperature to about 260°C for reaction, and distill low Boiling point component, when the reaction is carried out for about 300 minutes, the low boiling point fraction reaches 98% of the theoretical amount, the esterification reaction is completed, and the stabilizer trimethyl phosphate 4.86g is added to the esterification reaction kettle, and then the prepared hexadiene Acid-pentamethylenediamine aqueous solution (mass concentration is 50%, wherein the mass of adipic acid-pentamethylenediamine salt is 480g), continue stirring at about 260°C for about 10 minutes. Then transfer the material in the esterification reaction kettle to the polycondensation reaction kettle under the condition of nitrogen protection, raise the temperature to 280°C, and evacuate to 1kPa, and after abo...

Embodiment 3

[0069] Under the condition of nitrogen protection, add 16.0kg terephthalic acid and 7.48kg ethylene glycol into a 100L esterification reaction kettle, add 7.8g ethylene glycol antimony catalyst, raise the temperature to about 260°C for reaction, and distill low Boiling point component, when the reaction is carried out for about 300 minutes, the low boiling point fraction reaches 98% of the theoretical amount, the esterification reaction is completed, and the stabilizer trimethyl phosphate 4.86g is added to the esterification reaction kettle, and then the prepared hexadiene Acid-pentamethylenediamine aqueous solution (mass concentration is 70%, wherein the mass of adipic acid-pentamethylenediamine salt is 480g), continue stirring at about 260°C for about 10 minutes. Then transfer the material in the esterification reaction kettle to the polycondensation reaction kettle under the condition of nitrogen protection, raise the temperature to 280°C, and evacuate to about 1kPa, after a...

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Abstract

The invention provides polyesteramide, a preparation method thereof and a fiber. The preparation method of the polyesteramide comprises the following steps: in an inert atmosphere, carrying out esterification reaction on terephthalic acid and / or derivatives thereof and dihydric alcohol in an esterification reaction kettle in the presence of a catalyst; after the esterification reaction is finished, adding a dibasic acid amine salt aqueous solution into the esterification reaction kettle for an amidation reaction, wherein the mass concentration of the dibasic acid amine salt aqueous solution is20-80%; and after the amidation reaction is finished, transferring the amidation product into a polycondensation reaction kettle to carry out polycondensation reaction, finishing the polycondensationreaction when the intrinsic viscosity of the polycondensation product reaches 0.3-1.8 dL / g, and collecting the polycondensation product to obtain the polyesteramide. According to the preparation method provided by the invention, the problem that yellowing is easy to occur in a polyesteramide synthesis process at the present stage can be solved, so that the obtained polyesteramide has a relativelylow yellow index.

Description

technical field [0001] The invention belongs to the field of macromolecular materials, and in particular relates to a polyester amide and its preparation method and fibers, in particular to a yellowing-resistant polyester amide resin material, its preparation process and fibers prepared from the polyester amide. Background technique [0002] Polyester amide is a kind of copolymer containing ester bond and amide bond in the molecular main chain. Due to the special structure, polyester amide has the advantages of both polyester and polyamide to a certain extent. In addition, due to its low cost, polyester amide has been widely used in fields such as fibers, biodegradable materials, and plastic films. [0003] In the current fiber field, polyester amide is generally first formed by the reaction of diamine and dibasic acid to form an intermediate containing amide bonds, and then polycondensed with diol; or it is obtained from diol, terephthalic acid And / or its derivatives and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/44D01F6/90
CPCC08G69/44D01F6/90
Inventor 杜宇鎏郑毅刘修才
Owner CATHAY R&D CENT CO LTD
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