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Catalyst of complexes of polymetal and multiple ligand, and preparation method

A multi-ligand and catalyst technology, which is applied in the field of preparing polyether, polyester and polyether polyol, can solve the problems of not being able to meet the high-performance requirements of polyurethane and the molecular weight limit of high-performance polyurethane and polyether polyol, and achieve Good elasticity, low degree of unsaturation, less monofunctional impurities

Inactive Publication Date: 2008-01-02
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the traditional catalyst used for the polymerization of alkylene oxide is KOH, but when KOH is used as a catalyst for this type of reaction, there are obvious limitations and defects: the polyether polyol produced has a high degree of unsaturation and cannot meet the requirements of high-performance polyurethane; The molecular weight of polyether polyols produced is limited, generally low molecular weight, and there are many small molecular impurities, which cannot meet the high performance requirements of polyurethane; the production cycle is long, the process is cumbersome, the investment in fixed assets is large, and the overall cost of production is high; KOH A large amount is generally 0.1wt% to 1.0wt% (calculated as oxyalkylene). Existing in the product will seriously damage the performance of the product and must be completely removed
Its activity is still not high enough, and the catalyst dosage is as high as 100ppm

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The preparation of catalyst 1, its preparation steps are:

[0041] 1. Take 13g of potassium hexacyanocobaltate and dissolve it in 130g of pure water to obtain solution 1 1 Get zinc chloride 40g, be dissolved in 120g pure water, get solution 2 1 ; Get 234g tert-butanol and 156g pure water to mix, get solution 3 1 ; Preparation concentration is 0.2wt% tributyl tin chloride (C 4 h 9 ) 3 SnCl) in methanol solution to obtain solution 4 1 Be 400 polyoxypropylene ethers (being called for short PPG-204) and 160g pure water ratio preparation solution 5 by 10g tert-butanol and 15g molecular weight 1 ;

[0042] 2. In a 2000ml reactor, add solution 1 1 , and then dropwise added solution 2 with stirring 1 , and then homogenize for 30 minutes after adding, then add solution 3 1 , and stirred for 1 hour, and finally added 24 g of solution 4 1 , and stirred for 3 hours. Vacuum filtration gave solid A 1 ;

[0043] 3rd, the solid A 1 Put into reaction vessel, add concentratio...

Embodiment 2

[0046] The preparation of catalyst 2, its preparation steps are:

[0047] 1. Take 11g of potassium hexacyanoferrate and dissolve it in 88g of pure water to obtain solution 1 2 Get manganese chloride 43g, be dissolved in 65g pure water, get solution 2 2 ; Get 88g tert-amyl alcohol and 132g pure water to mix, get solution 3 2 ; Preparation concentration is 1.0wt% tributyl tin chloride (C 4 h 9 ) 3 SnCl) in methanol solution to obtain solution 4 2 ; Press 10g tert-butyl alcohol: 15g tert-butylamine: 160g purified water to prepare solution 5 2 ;

[0048] 2. In a 2000ml reactor, add solution 1 2 , and then dropwise added solution 2 with stirring 2 , and then homogenize for 60 minutes after adding, then add solution 3 2 , and stirred for 2 hours, and finally added 11 g of solution 4 2 , and stirred for 0.5 hours. Vacuum filtration gave solid A 2 ;

[0049] 3rd, the solid A 2 Put it into the reaction vessel, add 220 g of 80 wt% tert-butanol aqueous solution, stir for 1 ...

Embodiment 4

[0059] The preparation of catalyst 4, its preparation steps are;

[0060] 1. Take 12g of potassium hexacyanocobaltate and dissolve it in 100 grams of pure water to obtain solution 1 4 Get zinc bromide 42g, be dissolved in 90g pure water, get solution 2 4 ; Get 150g tert-butanol and 150g pure water and mix to get solution 3 4 ; Preparation concentration is 0.5wt% tributyl tin chloride (C 4 h 9 ) 3 Methanol solution of SnCl to obtain solution 4 4 ; Prepare solution 5 in the ratio of 10g tert-butyl alcohol and 15g dibutyl phthalate and 160g purified water 4 ;

[0061] 2. In a 2000ml reactor, add solution 1 4 , and then dropwise added solution 2 with stirring 4 , after adding, homogenize for 40 minutes, then add solution 3 4 , and stirred for 1.5 hours, and finally added 18 g of solution 4 4 , and stirred for 2 hours, vacuum filtered to obtain solid A 4 .

[0062] 3rd, the solid A 4 Put it into the reaction vessel, add 250 g of 70 wt% tert-butanol aqueous solution, st...

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PUM

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Abstract

A multi-metal and multi-ligand match used as the catalyst for the catalytic polymerization of epoxy alkane and its synthesizing process are disclosed. It contains more than two metals and more than two organic ligands. Its advantages are short inducing period, high catalytic activity and low consumption.

Description

technical field [0001] The invention relates to a multimetal multi-ligand complex catalyst and a preparation method thereof, in particular to a multimetal multi-ligand complex catalyst for polyether synthesis and a preparation method thereof. The catalyst can be used to prepare polyether, Polyester and polyether polyols. Background technique [0002] At present, the traditional catalyst used for the polymerization of alkylene oxide is KOH, but when KOH is used as a catalyst for this type of reaction, there are obvious limitations and defects: the polyether polyol produced has a high degree of unsaturation and cannot meet the requirements of high-performance polyurethane; The molecular weight of polyether polyols produced is limited, generally low molecular weight, and there are many small molecular impurities, which cannot meet the high performance requirements of polyurethane; the production cycle is long, the process is cumbersome, the investment in fixed assets is large, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22C08G65/06C08G18/48
Inventor 程海斌
Owner WUHAN UNIV OF TECH
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