Poly (cyclohexene carbonate) copolymer and preparation method thereof

A technology of polycyclohexenyl carbonate and copolymer, applied in the field of polycyclohexenyl carbonate copolymer and its preparation

Active Publication Date: 2021-07-06
SHANGHAI HUAFON NEW MATERIAL R&D TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the prior art problem of thermal properties of materials deteriorating while improving the toughness of polycyclohexene carbonate, to provide a polycyclohexene carbonate copolymer and its preparation method

Method used

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  • Poly (cyclohexene carbonate) copolymer and preparation method thereof
  • Poly (cyclohexene carbonate) copolymer and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0059] A preparation method of a polycyclohexenyl carbonate copolymer, the specific preparation process is: in a 100ml high-pressure reactor after dehydration and deoxygenation, first add biocide with double-sided active ends at the initial stage of the reaction. Degraded aliphatic polyester C (polybutylene terephthalate-co-butylene adipate) (2 g, number average molecular weight 8000 g / mol, molecular weight distribution index 1.21), dried 1,2- Epoxycyclohexane (20ml), dry dioxolane (10ml) and Zn-Co double metal cyanide catalyst (5mg), fill into carbon dioxide in the autoclave by the carbon dioxide supply line with pressure regulating function again, make The pressure in the autoclave reached 5.0MPa, and the copolymerization reaction was carried out. After the copolymerization reaction, the autoclave was cooled to 25°C, and the carbon dioxide in the autoclave was slowly released. 1 H-NMR NMR sample for NMR measurement. The crude product was dissolved in dichloromethane, then p...

Embodiment 2

[0073] A preparation method of a polycyclohexenyl carbonate copolymer, the specific preparation process is: in a 50ml high-pressure reactor after dehydration and deoxygenation, firstly add a polycarbonate with active ends on both sides for the first time at the initial stage of the reaction Biodegrade aliphatic polyester C, 1,2-epoxycyclohexane, solvent and catalyst, and then fill the autoclave with carbon dioxide through the carbon dioxide supply line with pressure regulation function, so that the pressure in the autoclave reaches 5MPa, Carry out copolymerization reaction to synthesize the B segment to form a B-A-B type prepolymer; then continue to add biodegradable aliphatic polyester C with double-sided active ends to the reaction system for the second time; after the copolymerization reaction, cool the autoclave To 25 ℃, slowly let off the carbon dioxide in the high-pressure reactor, open the reactor as soon as possible to take 1 H-NMR NMR sample for NMR measurement. The ...

Embodiment 3

[0077] A preparation method of a polycyclohexenyl carbonate copolymer, the specific preparation process is: in the 100ml high-pressure reactor after dehydration and deoxygenation, firstly add the polycarbonate with active ends on both sides for the first time at the initial stage of the reaction Biodegrade aliphatic polyester C, 1,2-epoxycyclohexane, solvent and catalyst, and then fill the autoclave with carbon dioxide through the carbon dioxide supply line with pressure regulation function, so that the pressure in the autoclave reaches 4MPa, Carry out copolymerization reaction to synthesize the B segment to form a B-A-B type prepolymer; then continue to add biodegradable aliphatic polyester C with double-sided active ends to the reaction system in 2 times; after the copolymerization reaction, cool the high-pressure reactor To 25 ℃, slowly let off the carbon dioxide in the high-pressure reactor, open the reactor as soon as possible to take 1 H-NMR NMR sample for NMR measuremen...

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Abstract

The invention relates to a poly (cyclohexene carbonate) copolymer and a preparation method thereof, the poly (cyclohexene carbonate) copolymer is a B-(AB) n type segmented copolymer composed of a chain segment A and a chain segment B, and n = 1, 3 or 5; the chain segment A is a biodegradable aliphatic polyester chain segment, and the chain segment B is a polycarbonate cyclohexene ester chain segment; the chain segment B is formed by carrying out copolymerization reaction on carbon dioxide and 1, 2-cyclohexene oxide by taking biodegradable aliphatic polyester C with double-side active terminals (double-side hydroxyl or double-side carboxyl) as a macromolecular chain transfer agent; according to the preparation method, the chain segment B is synthesized in a block polymerization mode of adding the macromolecular chain transfer agent for K times, and the poly (cyclohexene carbonate) copolymer is obtained. According to the invention, the problem that the thermal performance of the material is deteriorated while the toughness of the polycarbonate cyclohexene ester is improved in the prior art is effectively solved.

Description

technical field [0001] The invention belongs to the technical field of biodegradable polymer materials, and relates to a polycyclohexenyl carbonate copolymer and a preparation method thereof. Background technique [0002] carbon dioxide (CO 2 ) is the main greenhouse gas, and it is also a kind of cheap and clean carbon and oxygen resources. It can be collected, purified and used to "turn waste into treasure". Among the many utilization approaches, the conversion and fixation of carbon dioxide into polymer materials has become an important research direction, among which the ring-opening copolymerization of carbon dioxide and epoxide is particularly attractive, and the polycarbonate polymer prepared by this reaction is a Chemicals of important economic value, with excellent biodegradability, good transparency, high barrier and biocompatibility, have been widely used in the fields of degradable packaging bags, biodegradable agricultural mulch films and carbon dioxide-based po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/64C08G63/78C08G64/34
CPCC08G63/64C08G63/78C08G64/34
Inventor 胡海波徐达乐崔燕军唐劲松
Owner SHANGHAI HUAFON NEW MATERIAL R&D TECH CO LTD
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