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Polyester and preparation method and usage thereof

A polyester and bio-sourced technology, applied in the direction of single-component copolyester artificial filaments, etc., can solve the problems of restricting the application of fiber fields, polyester does not have normal pressure dyeability, and achieve the effect of reducing pollution

Inactive Publication Date: 2013-01-16
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this solution solves the source of the polyester source, the obtained polyester does not have normal pressure dyeability, which limits its application in the fiber field
[0005] Chinese patent CN101063236A discloses a copolyester chip or fiber modified by side chain-containing aliphatic dihydric alcohol (or its alkoxide) and its preparation method, although the polyester chip or fiber can be dyed under normal pressure , but the raw materials for the production of polyester come from petroleum, and it is imminent to choose raw materials from biological sources now that petroleum is increasingly scarce

Method used

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  • Polyester and preparation method and usage thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] (1) Preparation of bio-derived ethylene glycol (EG):

[0064] The starch is separated from corn through a biological process and processed to obtain sugars with five or six carbon atoms. These sugars are fermented to obtain ethanol. The ethanol is dehydrated to obtain ethylene. The ethylene is oxidized to obtain ethylene oxide. The ethylene oxide is added Hydrogen catalysis produces bio-ethylene glycol.

[0065] (2) Preparation of 2-methyl-1,3-propanediol (MPO):

[0066] The starch is obtained by biological separation from wheat straw, which is processed to obtain sugars with five or six carbon atoms. These sugars are fermented into ethanol, the ethanol is dehydrated to obtain ethylene, and ethylene is dimerized to obtain butene, which is then metathesized with ethylene Propylene is obtained by the reaction, propylene is oxidized to obtain propylene oxide and then hydrogenated to obtain propenol; and propenol is reacted with bio-based carbon monoxide and hydrogen to obtain MP...

Embodiment 2

[0073] Preparation of 2-methyl-1,3-propanediol (EOMPO):

[0074] MPO was prepared according to the method described in Example 1; MPO and ethylene oxide were stirred at high temperature under the catalysis of alkali metals to obtain EOMPO.

[0075] In the esterification reaction stage, the added diol is bio-derived ethylene glycol containing 25 mol% of bio-source EOMPO, and no PEG is added in the polycondensation reaction stage, and the others are reacted with Example 1 to obtain polyester.

[0076] The obtained polyester was dyed and evaluated according to the method of Example 1. L * = 26.6.

[0077] See Table 1 for other physical properties of polyester.

Embodiment 3

[0079] Preparation of 2-methyl-1,3-propanediol (POMPO) dipropoxy:

[0080] MPO was prepared according to the method described in Example 1; MPO and propylene oxide were stirred at high temperature under the catalysis of alkali metals to obtain POMPO.

[0081] In the esterification reaction stage, the added glycol is bio-derived ethylene glycol containing 5 mol% of bio-derived POMPO, and no PEG is added in the polycondensation reaction stage. The other reactions are the same as in Example 1 to obtain polyester.

[0082] The obtained polyester was dyed and evaluated according to the method of Example 1. L * = 27.6.

[0083] See Table 1 for other physical properties of polyester.

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Abstract

The invention discloses a polyester and a preparation method and usage thereof. The content of a terephthalic acid structural unit in acid components of the polyester is higher than 90 mol%. Dihydric alcohol components mainly comprise an ethylene glycol structural unit and an aliphatic dihydric alcohol structural unit in a special structure, wherein the content of the ethylene glycol structural unit is 70-99 mol%, the content of the aliphatic dihydric alcohol structural unit in the special structure is 1-30 mol%, and at least the special structure unit in the dihydric alcohol components is of biogenetic derivation. The carbon content of the biogenetic derivation accounts for more than 20% of carbon atoms in the polyester. The polyester is mainly used in the field of fibers.

Description

Technical field [0001] The invention relates to a biologically-derived normal-pressure dyeable polyester, a preparation method of the polyester and its use. Background technique [0002] Currently, synthetic polyester is widely used, but almost all raw materials used are derived from petroleum. As a non-renewable energy source, as the global oil reserves become less and less, its price is getting higher and higher, resulting in an increase in the production cost of polyester fibers; at the same time, a large amount of CO will be emitted during the cracking of oil. 2 , Leading to aggravation of the global greenhouse effect, affecting the living environment of mankind. Therefore, there is an increasingly urgent need to develop a low-carbon polyester with easily available raw materials. [0003] In addition, synthetic polyester fibers are difficult to dye due to their molecular structure. When dyeing with disperse dyes, they must be heated to about 130°C under pressure before they ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/672C08G63/183C08G63/78D01F6/84
Inventor 吴亚薇李旭望月克彦
Owner TORAY FIBER RES INST(CHINA) CO LTD
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