Catalyst for polylactone preparation

A technology of catalyst and polylactone, which is applied in the field of catalyst for preparing polylactone, and can solve the problems of inapplicability and difficult removal of metal residues, etc.
CN105348495AInactive Publication Date: 2016-02-24YUNNAN MINZU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YUNNAN MINZU UNIV
Publication Date
2016-02-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a catalyst for polylactone preparation. A raw material lactone monomer undergoes ring-opening polymerization under the action of a difunctional group ionic liquid catalyst to obtain polylactone, and the catalyst is 1-(4-sulfo)butyl-3-methylpyrazinyltetrafluoroborate or 1-(4-sulfo)butyl-3-methylimidazolyltetrafluoroborate. The catalyst can catalyze lactone ring-opening polymerization to obtain polylactic acid, polyglycolic acid, poly(trimethylene carbonate) or other degradable polymers.
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Description

technical field

[0001] The invention belongs to the field of polymer materials, in particular to a catalyst for preparing polylactone. Background technique

[0002] Polylactone polymer materials such as polylactic acid, polyglycolic acid and polytrimethylene carbonate have good biodegradability and biocompatibility, and blending with other polymer materials can improve the degradability of the material. As a fully degradable and environmentally friendly material derived from renewable resource crops, it has attracted widespread attention and research from people all over the world.

[0003] There have been a lot of researches on the preparation methods of polylactones, among which ring-opening polymerization with cyclic lactones is a method that has been studied more, and various catalysts have become a research hotspot. Such as CN1814644, US5235031, US5357034, US4057537, etc. have reported that metal catalysts such as tin salts are used to catalyze ε-caprolactone and lacti...

Claims

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