Carbon dioxide-based poly (carbonic ester-ether) polyurethane and preparation method thereof

A carbon dioxide and carbonate technology, applied in the field of polymers, can solve the problems of limited mechanical properties of materials, weak interaction force, poor mechanical properties such as material strength and toughness, etc., to achieve excellent mechanical properties and improve hardness.

Active Publication Date: 2013-04-10
JUYUAN CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] However, due to the lack of strong polar groups between the molecular chains of the raw material carbon dioxide-epoxy compound copolymer, the interaction between the molecular chains is weak, resulting in the copolymer itself having the characteristics of non-crystallization and low glass transition temperature. The mechanical properties such as strength and toughness of the material formed by the object are poor, which limits its application in the fields of disposable packaging, utensils and medical devices.
Therefore, the interaction between the molecular chains of the above carbon dioxide-based poly(carbonate-ether) polyurethane is still weak, and the mechanical properties of the material are limited.

Method used

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  • Carbon dioxide-based poly (carbonic ester-ether) polyurethane and preparation method thereof

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preparation example Construction

[0061] The present invention also provides a method for preparing carbon dioxide-based poly(carbonate-ether) polyurethane, comprising the following steps:

[0062] heating and melting the first component of 30mol% to 90mol% and the second component of 10mol% to 70mol% to obtain a molten mixture; the first component is carbon dioxide-based poly(carbonate-ether) polyol, the The number average molecular weight of the first component is 500~5000; the second component is polyaromatic dicarboxylic acid-aliphatic glycol ester or polyaromatic dicarboxylic acid-aliphatic dicarboxylic acid- Aliphatic glycol ester, the number average molecular weight of the second component is 500-5000, and the melting point of the second component is less than 160°C;

[0063] The molten mixture is reacted with an isocyanate to obtain a carbon dioxide-based poly(carbonate-ether) polyurethane.

[0064] The present invention combines carbon dioxide-based poly(carbonate-ether) polyol with polyaromatic dica...

Embodiment 1

[0075] 20mL containing 1.38g K 3 Co (CN) 6 K 3 Co (CN) 6 Slowly add deionized aqueous solution to 60mL dissolved in 16.3gZnCl 2 ZnCl 2 In the mixed solution of deionized aqueous solution and 30mL tert-butanol (tert-BuOH), after the dropwise addition is completed, the temperature is 50°C, and the reaction is continued with stirring. After 1 hour of reaction, the reaction mixture is obtained;

[0076] The reaction mixture was centrifuged at a speed of 5000r / min with a centrifuge, and after centrifugation for 30min, the precipitate was collected and then washed with 60mL tert-BuOH aqueous solution (V tert-BuOH / V 水 =1) The precipitate was washed with pulp, centrifuged after washing for 30 minutes, the precipitate was collected again, and then washed with 60 mL of tert-butanolized pulp, and finally vacuum-dried to constant weight at a temperature of 50 ° C to obtain Co-Zn bimetallic Cyanide, spare.

Embodiment 2

[0078] Add 3200g of ethylene oxide, 5g of Co-Zn double metal cyanide prepared in Example 1, and 150mL of fully dried dipropylene glycol to the dry polymerization reactor under the protection of argon. After stirring for 1 hour, add carbon dioxide to the reaction The pressure of the kettle reached 7MPa, and the temperature was raised to 70°C for reaction. After 5 hours of reaction, a reaction mixture was obtained. After precipitation, separation and drying, a copolymer carbon dioxide-based poly(carbonate-ether) polyol was obtained.

[0079] Using gel permeation chromatography (GPC) analysis, the results show that the number average molecular weight of the copolymer is 500; using titration analysis, the results show that the hydroxyl value of the copolymer is 221.4; using proton nuclear magnetic resonance analysis, the analysis results 1 H-NMR: 4.40ppm (2H), 4.28ppm (2H), 3.75ppm (2H), 3.63ppm (2H), the results show that the ether segment content of the copolymer is 20wt%.

[00...

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Abstract

The invention provides carbon dioxide-based poly (carbonic ester-ether) polyurethane and a preparation method thereof. The method comprises the steps of heating to fuse 30mol%-90mol% of carbon dioxide-based poly (carbonic ester-ether) polyhydric alcohol with a number-average molecular weight of 500-5000 and 10mol%-70mol% of polyaromatic dicarboxylic acid-aliphatic dibasic alcohol ester or polyaromatic dicarboxylic acid-aliphatic dicarboxylic acid-aliphatic dihydric alcohol ester with a number-average molecular weight of 500-5000 and a fusion point lower than 160 DEG C, obtaining a fusion mixture, allowing the fusion mixture to react with isocyanate, and obtaining polyurethane. According to the method, polyurethane is prepared by carbon dioxide-based poly (carbonic ester-ether) polyhydric alcohol with polyaromatic dicarboxylic acid-aliphatic dibasic alcohol ester or polyaromatic dicarboxylic acid-aliphatic dicarboxylic acid-aliphatic dihydric alcohol ester with the low fusion point for the first time, and aromatic groups are introduced to improve the mechanical property of a carbon dioxide-based poly (carbonic ester-ether) polymer.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a carbon dioxide-based poly(carbonate-ether) polyurethane and a preparation method thereof. Background technique [0002] Carbon dioxide-epoxy compound copolymer refers to a polymer material synthesized by copolymerization of carbon dioxide and alkylene oxide. Strictly speaking, the copolymer is a poly(carbonate-ether) resin because carbon dioxide and alkylene oxide cannot be inserted alternately during the copolymerization process. The carbon dioxide-epoxy compound copolymer can be completely decomposed by microorganisms, and is an ideal fully biodegradable polymer material, and its preparation process is simple, and the cost of raw materials is low, so it has a good application prospect. [0003] In order to further expand the scope of application of carbon dioxide-epoxy compound copolymers as biodegradable materials, the prior art discloses a variety of methods for improving...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/44C08G18/42C08G64/34C08G63/183C08G63/181
Inventor 秦玉升付双滨王献红王佛松
Owner JUYUAN CHEM IND CO LTD
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