Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Catalyst for preparing polyol as well as preparation method and application of catalyst

A technology for catalysts and polyols, which is applied in the field of catalysts for the preparation of polyols, and can solve the problems of low catalytic activity of catalysts, inability to balance high carbonate unit content and low cyclic carbonate content, etc.

Active Publication Date: 2021-04-09
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Adopt the above-mentioned double metal cyanide to carry out carbon dioxide-epoxide copolymerization, the obtained copolymerization product can not take into account high carbonate unit content and low cyclic carbonate content, meanwhile, the catalytic activity of catalyst is not high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The invention provides a kind of preparation method that is used to prepare the catalyst of polyhydric alcohol, comprises the following steps:

[0034] Under the action of the first initiator, the double metal cyanide compound and the epoxide are polymerized to obtain a catalyst for preparing polyol;

[0035] The first initiator includes one or more of active hydrogen-containing compounds and active hydrogen-containing polymers.

[0036] In some embodiments of the present invention, the preparation method of the catalyst comprises the following steps:

[0037] A) Evacuate the weighing bottle at 75-85°C, fill with protective gas for 1.5-2.5 hours, and cool to room temperature;

[0038] B) under the atmosphere of protective gas, add the first starter and double metal cyanide in the weighing bottle to obtain a mixture;

[0039] C) Evacuate the reactor at 75-85°C, fill it with a protective gas for 1.5-2.5 hours, cool to room temperature, and add epoxy to the cooled reacto...

Embodiment 1

[0106] Evacuate the weighing bottle at 80°C and fill with CO 2 Gas treatment 2h (inflated 6 times), and cooled to room temperature; 2 Under the protection of air, add 10.0g of DMC (based on Zn 3 [Co(CN) 6 ] 2 double metal cyanide) and 25.0g sebacic acid to obtain a mixture;

[0107] Put the 500mL reactor at 80°C, after evacuation, fill with CO 2 Treat for 2h (inflate 6 times), and cool to room temperature, add the mixture in the reaction kettle, then add 100g propylene oxide to the reaction kettle through the connection of the catalyst weighing bottle, stir at a speed of 500rpm, pass carbon dioxide The pressure regulator feeds carbon dioxide into the reactor, and the reactor is placed in a constant temperature bath for polymerization. The carbon dioxide pressure for polymerization is 4.0Mpa, the polymerization reaction temperature is 80°C, and the polymerization reaction time is 4h. After the end of the polymerization reaction, unreacted monomers and carbon dioxide are s...

Embodiment 2

[0111] Evacuate the weighing bottle at 80°C and fill with CO 2 Gas treatment 2h (inflated 6 times), and cooled to room temperature; 2 Add 10.0g of DMC (based on Zn 3 [Co(CN) 6 ] 2 double metal cyanide) and 25.0g adipic acid to obtain a mixture;

[0112] Put the 500mL reactor at 80°C, after evacuation, fill with CO 2 Treat for 2h (inflate 6 times), and cool to room temperature, add the mixture in the reaction kettle, then add 100g propylene oxide to the reaction kettle through the connection of the catalyst weighing bottle, stir at a speed of 500rpm, pass carbon dioxide The pressure regulator feeds carbon dioxide into the reactor, and the reactor is placed in a constant temperature bath for polymerization. The carbon dioxide pressure for polymerization is 2.0Mpa, the polymerization reaction temperature is 80°C, and the polymerization reaction time is 4h. After the end of the polymerization reaction, unreacted monomers and carbon dioxide are slowly discharged, and the reac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Number average molecular weightaaaaaaaaaa
Number average molecular weightaaaaaaaaaa
Number average molecular weightaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of catalysts, in particular to a catalyst for preparing polyol as well as a preparation method and application of the catalyst. The preparation method of the catalyst for preparing polyol comprises the following steps: under the action of a first initiator, carrying out polymerization reaction on double metal cyanide and epoxide to obtain the catalyst for preparing polyol, wherein the first initiator comprises one or more of an active hydrogen-containing compound and an active hydrogen-containing polymer. The catalyst prepared by the invention can be used for copolymerization of carbon dioxide and epoxide, and the obtained copolymerization product has high carbonate unit content and low cyclic carbonate content.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a catalyst for preparing polyols, its preparation method and application. Background technique [0002] Using carbon dioxide as a raw material and reacting it with epoxides to prepare polymer materials is one of the most promising ways to efficiently utilize carbon dioxide carbon resources, and has attracted the attention of researchers. Since Mr. Inoue Shohei (Macramol.chem., 1969, 130, 210) of Japan reported the polymer prepared by the reaction of carbon dioxide and propylene oxide in 1969, the research on catalyst preparation in this field has emerged in an endless stream. Scientists from various countries have successively developed ZnEt2-multiple Proton compound system, rare earth ternary system, phenoxy zinc system, β-diimine system, Salen system, etc., and achieved certain success. [0003] The double metal cyanide (DMC) reported in the 1960s can efficiently catalyze th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08G65/26C08G65/28C08G64/34
CPCC08G65/2615C08G65/2663C08G65/2612C08G64/34
Inventor 乔立军付双滨王雪松苗宇阳王献红王佛松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com