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Biodegradable copolyester as well as preparation method and application thereof

A biodegradable and copolyester technology, which is applied in the field of polyester plastics, can solve the problems of complex preparation steps and affecting product quality, and achieve the effects of easy mixing, guaranteed performance, and sufficient polycondensation

Pending Publication Date: 2022-03-15
江苏睿安应用生物技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, it is necessary to add a phosphorus-containing color stabilizer, which shows that the preparation steps are still complicated and easily affect product quality.

Method used

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  • Biodegradable copolyester as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Example 1 A biodegradable copolyester disclosed in this example is composed of the following raw materials in percentage by weight: 40% dihydric alcohol, 7% dimer fatty acid, 15.99% aromatic dibasic acid, 37% aliphatic dibasic acid %, titanate 0.01%; wherein, the molecular formula of the dimer fatty acid is C 36 h 64 o 4 , whose structural formula includes a six-membered ring, on which at least two dibasic acid branch chains are grafted.

[0049] The effect of the above-mentioned biodegradable copolyester: the biodegradable polymer composed of the above-mentioned raw materials has good hydrophobicity and resilience, and can be applied to mulch.

[0050] In the present embodiment, the structural formula of the dimerized fatty acid is

[0051] R1, R2, R3 and R4 are alkyl groups.

[0052] In this embodiment, the titanate is one or a mixture of tetrabutyl titanate and tetraisopropyl titanate.

[0053] In this embodiment, the dihydric alcohol contains 8% by weight of ...

Embodiment 2

[0064] A biodegradable copolyester disclosed in this embodiment is composed of the following raw materials in percentage by weight, 60% of glycol, 0.05% of dimer fatty acid, 9% of aromatic dibasic acid, 30.85% of aliphatic dibasic acid, titanium Ester 0.1%; Wherein, the molecular formula of the dimer fatty acid is C 36 h 64 o 4 , whose structural formula includes a six-membered ring, on which at least two dibasic acid branch chains are grafted.

[0065] The effect of the above-mentioned biodegradable copolyester: the biodegradable polymer composed of the above-mentioned raw materials has good hydrophobicity and resilience, and can be applied to mulch.

[0066] In the present embodiment, the structural formula of the dimerized fatty acid is

[0067] R1, R2, R3 and R4 are aryl groups.

[0068] In this embodiment, the titanate is one or a mixture of tetrabutyl titanate and tetraisopropyl titanate.

[0069] In this embodiment, the dihydric alcohol contains 8% by weight of a...

Embodiment 3

[0080] A biodegradable copolyester disclosed in this embodiment is composed of the following raw materials in percentage by weight, 50% of glycol, 3.95% of dimer fatty acid, 37% of aromatic dibasic acid, 9% of aliphatic dibasic acid, titanium Ester 0.05%; wherein, the molecular formula of the dimer fatty acid is C 36 h 64 o 4 , whose structural formula includes a six-membered ring, on which at least two dibasic acid branch chains are grafted.

[0081] The effect of the above-mentioned biodegradable copolyester: the biodegradable polymer composed of the above-mentioned raw materials has good hydrophobicity and resilience, and can be applied to mulch.

[0082] In the present embodiment, the structural formula of the dimerized fatty acid is

[0083] A mixture of R1, R2, R3 and R4 are alkyl and aryl.

[0084] In this embodiment, the titanate is one or a mixture of tetrabutyl titanate and tetraisopropyl titanate.

[0085] In this embodiment, the dihydric alcohol contains 6% ...

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Abstract

The invention relates to the technical field of polyester plastics, in particular to biodegradable copolyester and a preparation method and application thereof.The biodegradable copolyester is prepared from, by weight, 40%-60% of dihydric alcohol, 0.05%-7% of dimer fatty acid, 9%-37% of aromatic dibasic acid, 9%-37% of aliphatic dibasic acid and 0.01%-0.1% of titanate; wherein the molecular formula of the dimer fatty acid is C36H64O4, the structural formula of the dimer fatty acid comprises a six-membered ring, at least two binary acid branched chains are grafted on the six-membered ring, the biodegradable copolyester has the advantages of good hydrophobicity, good rebound resilience, good flexibility and no discoloration, and the preparation method of the biodegradable copolyester has the advantage of easy operation.

Description

technical field [0001] The invention relates to the technical field of polyester plastics, in particular to a biodegradable copolyester and its preparation method and application. Background technique [0002] "White pollution" refers to the pollution of the environment by non-degradable plastic waste that can be seen at any time in urban and rural garbage or scattered everywhere. It mainly includes plastic bags, plastic packaging, disposable polypropylene fast food boxes, plastic tableware cups and plates, electrical filling foam stuffing, plastic beverage bottles, yogurt cups, ice cream skins, etc. Facing the increasingly serious problem of white pollution, people hope to find a plastic substitute that can replace the performance of the current plastics without causing white pollution. Degradable plastics have emerged as the times require. This new type of functional plastic is characterized by reaching a certain level After the service life is discarded, under certain en...

Claims

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Application Information

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IPC IPC(8): C08G63/199C08G63/85C08J5/18C08L67/02A01G13/02
CPCC08G63/199C08G63/85C08J5/18A01G13/0275C08J2367/02Y02A40/28
Inventor 刘晨贾雷胡立楠安书怡
Owner 江苏睿安应用生物技术股份有限公司
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