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A kind of full bio-based thermoplastic polyester elastomer based on furan ring and preparation method thereof

A thermoplastic polyester and bio-based technology, applied in the field of all bio-based thermoplastic polyester elastomers and its preparation, can solve the problems of large environmental pollution, toxicity, and large release, and achieve the effect of excellent mechanical properties

Active Publication Date: 2021-11-30
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although thermoplastic polyester elastomers are recyclable, the main raw materials of these synthetic thermoplastic polyester elastomers (such as terephthalic acid) are mostly derived from non-renewable fossil resources, and the manufacturing process of monomers is harmful to the environment. Pollution is large and toxic, and a large amount of greenhouse gas CO2 will be released during the production process

Method used

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  • A kind of full bio-based thermoplastic polyester elastomer based on furan ring and preparation method thereof
  • A kind of full bio-based thermoplastic polyester elastomer based on furan ring and preparation method thereof
  • A kind of full bio-based thermoplastic polyester elastomer based on furan ring and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of hydroxyl-terminated bio-based polyester: 1,2-propanediol, 1,4-butanediol, 1,4-succinic acid, 1,10-sebacic acid and p-hydroxyanisole (total mass of reaction monomers) 0.2%) was added in the three-necked flask and stirred evenly, wherein the divalent alcohol: dibasic acid mol ratio was 1.2: 1, and the 1, 2-propanediol: 1, 4-butanediol mol ratio was 0.5: 0.5, 1, 4- The molar ratio of succinic acid: 1,10-sebacic acid is 0.7: 0.3, under nitrogen atmosphere, the temperature is raised to 180 ° C, and the reaction is carried out at this temperature for 2 h, and then tetrabutyl titanate (the total amount of reaction monomers) is added. 0.05% of the mass), reacted under reduced pressure (300 Pa) for 1.5 h, and then added 10% of total alcohol 1,4-butanediol for end-capping, and finally obtained hydroxyl-terminated bio-based polyester (Mn= 2700-3000 g / mol).

[0032] Preparation of fully bio-based thermoplastic polyester elastomers based on furan rings: 2,5-furandica...

Embodiment 2

[0034] Preparation of hydroxyl-terminated bio-based polyester: the same as in Example 1.

[0035] Preparation of fully bio-based thermoplastic polyester elastomers based on furan rings: 2,5-furandicarboxylate, 1,4-butanediol, hydroxyl-terminated bio-based polyesters and p-hydroxyanisole (reactive monomer total 0.2% of the mass) into a three-necked flask and stir evenly, wherein the molar ratio of diol:diacid is 1.5:1, and the hydroxyl-terminated bio-based polyester accounts for 90% of the mass of the full bio-based thermoplastic polyester elastomer. After stirring and melting under protection, transesterification was performed at 160 °C for 1 h, 170 °C for 1 h, and 180 °C for 2 h, and then tetrabutyl titanate (0.05% of the total mass of the reaction monomers) was added, and the temperature was increased. To 220 ° C vacuum polycondensation reaction 6 h, take out the product while hot.

Embodiment 3

[0037]Preparation of hydroxyl-terminated bio-based polyester: the same as in Example 1.

[0038] Preparation of fully bio-based thermoplastic polyester elastomers based on furan rings: 2,5-furandicarboxylate, 1,4-butanediol, hydroxyl-terminated bio-based polyesters and p-hydroxyanisole (reactive monomer total 0.2% of the mass) into a three-necked flask and stir evenly, wherein the molar ratio of diol:diacid is 1.3:1, and the hydroxyl-terminated bio-based polyester accounts for 50% of the mass of the full bio-based thermoplastic polyester elastomer. After stirring and melting under protection, the transesterification reaction was carried out at 160 °C for 1 h, 170 °C for 1 h, and 180 °C for 2 h, and then tetrabutyl titanate (0.05wt% of the total mass of the reaction monomers) was added. , be warming up to 210 ℃ of vacuum polycondensation reaction 10 h, take out the product while hot.

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Abstract

A furan ring-based full bio-based thermoplastic polyester elastomer and its preparation method, a thermoplastic polyester elastomer and its preparation method, the thermoplastic polyester elastomer comprises 2,5-furandicarboxylic acid polyester hard segment and the soft segment of bio-based polyester; the present invention also provides a preparation method based on a furan ring-based all-bio-based thermoplastic polyester elastomer; the all-bio-based thermoplastic polyester elastomer of the present invention has excellent mechanical properties, By changing the ratio of the hard segment of 2,5-furandicarboxylic acid polyester to the soft segment of bio-based polyester, the mechanical properties, crystallization and thermal properties of thermoplastic polyester elastomers can be adjusted to obtain from hard plastics to soft elastomers , All monomer raw materials of elastomers are derived from renewable resources, and do not depend on petroleum-based monomers. It is a new type of green polymer material.

Description

technical field [0001] The invention relates to a thermoplastic polyester elastomer and a preparation method thereof, in particular to a furan ring-based full bio-based thermoplastic polyester elastomer and a preparation method thereof. Background technique [0002] Thermoplastic elastomers have the properties of both rubber and plastics. They exhibit the high elasticity of traditional vulcanized rubbers at room temperature, and can be repeatedly processed and plasticized like thermoplastic resins at high temperatures. Thermoplastic elastomers generally contain two phases at their service temperature, one phase is a hard segment (the Tg of the hard segment is higher than its service temperature), the other phase is a soft segment (the Tg of the soft segment is lower than its service temperature), and the hard segment is A reversible physical cross-linking point is formed between them, which can withstand stress. The soft segment is a freely distributed highly elastic segment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/58C08G63/85
CPCC08G63/58C08G63/85
Inventor 康海澜苗晓丽方庆红李佳欢
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY