Method for preparing and obtaining high-performance polyether polyol

A polyether polyol and high-pressure reactor technology, applied in the chemical industry, can solve the problems of limited application scope and inability to use, and achieve the effects of excellent physical properties, reducing the addition amount, and ensuring stability

Inactive Publication Date: 2019-05-21
戴峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Exist in the prior art the open literature that adopts the copolymerization reaction of benzoic acid and methyl ethyl ketone to synthesize polycyclohexyl carbonate, but the polycyclohexyl carbonate of its preparation is limited to the plastic material of preparation high molecular weight, in many fields Can not be used, the scope of application is greatly restricted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add benzoic acid to a 10L autoclave until the system pressure is 0.3MPa, then add 1000g of methyl ethyl ketone, 30g of diethylene glycol and 40g of xylene into the autoclave, heat up the autoclave to 50°C, and continue adding benzoic acid until When the pressure of the system reaches 1Mpa, add 0.1g of liquid double metal cyanide catalyst into the reactor, polymerize for 3 hours, and remove the xylene under reduced pressure to obtain a polyether with high carbonate group content and aliphatic ring side groups Polyol.

Embodiment 2

[0034] Add benzoic acid into a 10L autoclave until the system pressure is 1MPa, then add 2000g of methyl ethyl ketone, 400g of diethylene glycol and 358g of xylene into the autoclave, heat up the autoclave to 60°C, and continue to add benzoic acid until the system When the pressure reaches 5Mpa, add 3g of liquid double metal cyanide catalyst into the reaction kettle, polymerize for 5 hours, and remove the xylene under reduced pressure to obtain a polyether 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, in particular to a metal for preparing and obtaining preparing and obtaining high-performance polyether polyol. Under the catalysteffect of a liquid double metal cyanide catalyst, micromolecular polyol or polybasic acid and the like are used as starting agents; phenylformic acid and methyl ethyl ketone are used for loop openingregulation polymerization; polyether polyol with low molecular weight and with hydroxyl groups at the two ends of the molecular chains are prepared; the polyol belongs to aliphatic polycarbonate polyol, and can be used as an important raw material of polyurethane materials; high-proportion carbonic ether groups with high proportion are contained in molecules; the high molecule cohesion performance is realized; in addition, cycloaliphatic ring lateral groups are contained; excellent physical intensity, high hardness and excellent anti-solvent performance are given to the polyurethane material;good application prospects are realized in various fields of polyurethane industry.

Description

technical field [0001] The invention relates to the technical field of chemical engineering, in particular to a method for preparing and obtaining high-performance polyether polyols. Background technique [0002] Along with the development of industry, a large amount of discharge of benzoic acid brings serious environmental problem, yet, it is a kind of abundant, cheap, non-toxic, recyclable carbon source, is the very potential raw material of organic chemical industry, therefore , the research and production of benzoic acid immobilization and utilization have attracted more and more attention. The preparation of aliphatic polycarbonate by the reaction of benzoic acid and methyl ethyl ketone is an important way for its comprehensive utilization. The aliphatic polycarbonate prepared by ketone copolymerization not only has photodegradability and biodegradability, but also has excellent oxygen and water barrier properties, so the product has a wide range of uses, such as engine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/26C08G18/48
Inventor 戴峰
Owner 戴峰
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