Polyhydric alcohol with poly-carbonate cyclohexyl and preparation method thereof

A polycyclohexyl carbonate and polyol technology, applied in the chemical industry, can solve the problems of unusability and limited application scope, and achieve the effects of reducing the added amount, excellent physical properties, and simplifying the feeding process.

Inactive Publication Date: 2017-01-11
湖南领湃科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, there have been public documents on the synthesis of polycyclohexyl carbonate by the copolymerization reaction of carbon dioxide and cyclohexene oxide, but the polycyclohexyl carbonate prepared by it is only limited to the preparation of high molecular weight plastic materials, which cannot be used in many fields , the scope of application is greatly limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add carbon dioxide into a 10L autoclave until the system pressure is 0.3MPa, then add 1000g cyclohexene oxide, 30g diethylene glycol and 40g xylene into the autoclave, raise the temperature of the autoclave to 50°C, and continue to add carbon dioxide until the system pressure reaches 1Mpa, add 0.1g liquid double metal cyanide catalyst into the reactor, polymerize for 3 hours, remove xylene under reduced pressure to obtain polycyclohexylcarbonate with high carbonate group content and aliphatic ring side groups Polyol.

Embodiment 2

[0034] Add carbon dioxide into a 10L autoclave until the system pressure is 1MPa, then add 2000g cyclohexene oxide, 400g diethylene glycol and 358g xylene into the autoclave, heat up the autoclave to 60°C, and continue to add carbon dioxide until the system pressure reaches 5Mpa , 3g of liquid double metal cyanide catalyst was added to the reactor, and the polymerization reaction was carried out for 5 hours. After the xylene was removed under reduced pressure, a high carbonate group content was obtained, and a polycyclohexyl carbonate polyol with aliphatic ring side groups was obtained. .

Embodiment 3

[0036] Add carbon dioxide into a 10L autoclave until the system pressure is 3MPa, add 3580g cyclohexene oxide, 358g dipropylene glycol and 1790g toluene into the autoclave, heat the reactor to 60°C, continue to add carbon dioxide until the system pressure reaches 10Mpa, and 35.8g of liquid double metal cyanide catalyst was added in the reactor, and the polymerization reaction was carried out for 5 hours, and the toluene was removed under reduced pressure to obtain a polycyclohexyl carbonate polyol with high carbonate group content and aliphatic ring side groups.

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PUM

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Abstract

The invention relates to the technical field of chemical engineering, and particularly relates to a polyhydric alcohol with poly-carbonate cyclohexyl and preparation method thereof. Through catalyses by the liquid-bimetal cyanide catalyst, using small molecule polyhydric alcohol or polyatomic acid as initiator, open-cycled adjusting and polymerizing with carbon dioxide and oxidized cyclohexene, to prepare the low molecular weight, polyhydric alcohol with poly carbonate cyclohexyl, where two ends of the molecular chain have hydroxyls. The polyhydric alcohol belongs to the aliphatic class of poly carbonate cyclohexyl; it can be used as an important raw material for polyurethane. The molecule contains highly proportioned carbonate ester radical group, has very high molecule cohesive energy, and bears ring-side radical group for fat, giving superior physical strength, extreme hardness and superior solvent resistance for polyurethane material; it has excellent application prospect in various polyurethane fields.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a polycyclohexyl carbonate polyol and a preparation method thereof. Background technique [0002] With the development of industry, a large amount of carbon dioxide emissions have brought serious environmental problems. However, it is a carbon source with abundant reserves, cheap, non-toxic and recyclable, and is a potential raw material for organic chemical industry. Therefore, The research and production of carbon dioxide fixation and utilization have attracted more and more attention. The preparation of aliphatic polycarbonate by the reaction of carbon dioxide and cyclohexene oxide is an important way for its comprehensive utilization. Aliphatic polycarbonate prepared by copolymerization of carbon dioxide and cyclohexene oxide Polycarbonate not only has photodegradability and biodegradability, but also has excellent oxygen and water barrier properties, so the product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G64/34C08G64/02C08G18/44
CPCC08G64/34C08G18/44C08G64/02C08G64/0208
Inventor 蔡志华刘红霞陈伟彬牛艳丽
Owner 湖南领湃科技股份有限公司
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