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A kind of elastic renewable polyester and preparation method thereof

A technology of recycled polyester and elasticity, applied in the field of textile fibers or chemical fibers, can solve the problems of low moisture absorption rate of polyester, and achieve the effect of improving elasticity and hand feeling

Active Publication Date: 2018-02-06
SUZHOU SHENGHONG FIBER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyester has the advantages of good strength, heat resistance, wear resistance, and good dimensional stability, so it is widely used in decoration, clothing industry and other fields, especially polyester (polyethylene terephthalate) is the most widely used ; But the moisture absorption rate of most polyesters is low, such as polyester is only about 0.4% in the standard state, which is at a low position among all chemical fibers

Method used

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  • A kind of elastic renewable polyester and preparation method thereof
  • A kind of elastic renewable polyester and preparation method thereof
  • A kind of elastic renewable polyester and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) group distribution ratio:

[0021]

[0022] (II) preparation steps:

[0023] (1) exhaust the air in the polyester reaction device with nitrogen, under the protection of nitrogen, 97 parts of dimethyl terephthalate, 31 parts of ethylene glycol, 0.01 part of zinc acetate and 0.01 part of 2,6- Put di-tert-butyl-4-methylphenol into the reaction bottle, start heating, stirring rate 300r / min, keep warm for 30 minutes when the temperature rises to 165°C, then raise the temperature to 185°C, react for 60 minutes, and protect the whole process with nitrogen , the unit is parts by mass;

[0024] (2) Add 0.01 part of antimony oxide, raise the temperature to 265°C, gradually reduce the pressure in the reactor until the residual pressure is 1kPa, and the reaction time is 60 minutes;

[0025] (3) Warming up to 275°C, gradually reducing the pressure in the reactor until the residual pressure is 0.1kPa, and the reaction time is 120 minutes;

[0026] (4) cooling to room temper...

Embodiment 2

[0029] (I) Group distribution ratio

[0030]

[0031] (II) preparation steps:

[0032] (1) exhaust the air in the polyester reaction device with nitrogen, under the protection of nitrogen, 97 parts of dimethyl terephthalate, 39 parts of dimethyl isophthalate, 40 parts of ethylene glycol, 29 parts The isosorbide of 25 parts, the glucosamine of 25 parts, the zinc acetate of 0.03 part and 0.02 part of 2,6-di-tert-butyl-4-methylphenol are put into reaction bottle, start heating, stirring rate 300r / min, temperature rises Keep warm for 45 minutes at 175°C, then raise the temperature to 195°C, react for 120 minutes, and protect the whole process with nitrogen gas, the unit is parts by mass;

[0033] (2) Add 0.03 parts of ethylene glycol antimony, raise the temperature to 275°C, gradually reduce the pressure in the reactor until the residual pressure is 0.5kPa, and the reaction time is 100 minutes;

[0034] (3) be heated up to 285 ℃, gradually reduce the pressure in the reactor u...

Embodiment 3

[0038] (I) Group distribution ratio

[0039]

[0040] (II) preparation steps:

[0041] (1) exhaust the air in the polyester reaction device with nitrogen, under the protection of nitrogen, 155 parts of dimethyl terephthalate, 39 parts of dimethyl isophthalate, 50 parts of ethylene glycol, 15 parts The propylene glycol of 29 parts, the isosorbide of 29 parts, the glucosamine of 55 parts, the esterification catalyst of 0.08 part and 0.05 part of 2,6-di-tert-butyl-4-methylphenol are put into reaction bottle, start heating, stir The speed is 300r / min, when the temperature rises to 165°C, it is kept for 40 minutes, then the temperature is raised to 190°C, and the reaction is carried out for 90 minutes. The whole process is protected by nitrogen gas, and the unit is parts by mass;

[0042] (2) Add 0.08 parts of polycondensation catalyst, raise the temperature to 270°C, gradually reduce the pressure in the reactor until the residual pressure is 0.80kPa, and the reaction time is 1...

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Abstract

The invention relates to an elastic renewable polyester and a preparation method thereof. The elastic renewable polyester is a polyester copolymer containing isosorbitol, glycosamine and other renewable compounds, and m-benzenedicarbonyl and other monomers. The preparation method mainly comprises the following steps: proportionally adding dimethyl terephthalate, dimethyl isophthalate, ethanediol, propanediol, isosorbitol, glycosamine and other monomers and a catalyst into a reaction bulb in a nitrogen protective atmosphere, carrying out programmed heating, and reacting while lowering the pressure according to needs; and after reacting for some time, cooling to room temperature, slowly restoring to atmospheric pressure, discharging in the nitrogen protective atmosphere, washing, filtering, and carrying out vacuum drying to obtain the finished product. The obtained polyester has the advantages of favorable hydroscopic property and favorable elasticity, and is renewable, degradable, green and environment-friendly.

Description

technical field [0001] The invention relates to a polyester and a preparation method thereof, in particular to a polyester component capable of improving the elasticity of the polyester and enhancing the reproducibility of the polyester and a preparation method thereof, belonging to the technical field of textile fibers or chemical fibers. Background technique [0002] Polyester has the advantages of good strength, heat resistance, wear resistance, and good dimensional stability, so it is widely used in decoration, clothing industry and other fields, especially polyester (polyethylene terephthalate) is the most widely used ; But the moisture absorption rate of most polyesters is low, such as polyester is only about 0.4% in the standard state, which is at a low position among all chemical fibers. The hygroscopicity of fibers is an important characteristic of fibers for clothing. It can not only affect the strength of fibers, but also affect the comfort of wearing. The modific...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/685C08G63/78
CPCC08G63/6856C08G63/78
Inventor 蒋学张叶兴梅锋田会双田秀枝王鸿博高卫东
Owner SUZHOU SHENGHONG FIBER CO LTD
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