Double metal complex catalyst and its prepn

A bimetallic complexation and catalyst technology, which is applied in the field of low unsaturation polyether polyols, can solve the problems of large content of by-products, long refining time, poor quality of polyether polyols, etc., and achieve stable polymerization process and excellent preparation process Simple, good product quality

Inactive Publication Date: 2004-04-07
LIMING RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, although the catalyst price is relatively low, the refining time is long, the by-product content in the product i

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] ① Dissolve 80g of zinc chloride in 120ml of deionized water;

[0031] ②Dissolve 32g of tripotassium hexacyanocobaltate in 600ml of deionized water;

[0032] ③In a three-necked flask, stir and mix the zinc chloride solution and the tripotassium hexacyanocobaltate solution, then add 1000ml of the prepared alcohol-water mixture (500ml deionized water, 350ml tert-butanol and 150ml tert-amyl alcohol), in Complexation reaction was carried out at 30°C for 15 minutes; then

[0033] ④Add 8g of aziridine compound I, stir for 5min and then centrifugally filter;

[0034] ⑤ uniformly disperse the obtained filter cake in a mixed solution made of 300ml deionized water, 490ml tert-butanol and 210ml tert-amyl alcohol, then add 8g aziridine compound I, stir for 5min, and centrifugally filter;

[0035] 6. Disperse the obtained filter cake uniformly again in the diol mixture of 700ml tert-butanol and 300ml tert-amyl alcohol, add 4g aziridine compound I again, stir for 5min, and centrifug...

Embodiment 2

[0041] ①Dissolve 20g of zinc chloride in 150ml of deionized water;

[0042] ②Dissolve 8g of tripotassium hexacyanocobaltate in 30ml of deionized water;

[0043] ③ After mixing ① and ② evenly, add 300ml of alcohol-water mixture (125ml of deionized water, 62.5ml of tert-butanol, 62.5ml of tert-amyl alcohol) and carry out complexation reaction at 35°C for 25min; then

[0044] ④Add 2g of aziridine compound II, continue to stir for 5min, and vacuum filter;

[0045] ⑤ Evenly disperse the obtained filter cake in the alcohol-water mixture (75ml of deionized water, 87.5ml of tert-butanol and 87.5ml of tert-amyl alcohol), then add 2g of aziridine compound II, continue to stir for 5min, and vacuum filter ;

[0046] ⑥ Disperse the obtained filter cake uniformly again in the diol mixture prepared by 125ml of tert-butanol and equal volume of tert-amyl alcohol, add 1g of aziridine compound II again, continue to stir for 5min, and vacuum filter;

[0047] ⑦The obtained filter cake was place...

Embodiment 3

[0052] 1. and 2. with embodiment 2;

[0053] ③ After mixing ① and ② evenly, add 300ml of alcohol-water mixture (125ml of deionized water, 62.5ml of tert-butanol, 62.5ml of n-butanol) and carry out complexation reaction at 45°C for 20min; then

[0054] ④Add 2g of aziridine compound II, continue to stir for 5min, and vacuum filter;

[0055] ⑤ Disperse the obtained filter cake evenly in the alcohol-water mixture (75ml of deionized water, 87.5ml of tert-butanol and 87.5ml of n-butanol), then add 2g of aziridine compound II, continue to stir for 5min, and vacuum filter;

[0056] ⑥ Disperse the obtained filter cake evenly in the diol mixture (125ml of tert-butanol and an equal volume of n-butanol), add 1g of aziridine compound II again, continue to stir for 5min, and vacuum filter;

[0057] ⑦The obtained filter cake was placed in a vacuum dryer, dried at room temperature and 0.01 MPa for 3 hours, crushed and sieved to obtain 14 g of DMC (C).

[0058] The zinc content is 22.1%, and...

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PUM

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Abstract

The double metal complex catalyst (DMC) consists of Zn3[Co(CN)6]2íñaZnC12íñbH2Oíñc organic small molecular double-alcohol ligand and macro molecular nitric propyl dine ligand. The double alcohol is one of tert-butyl alcohol-tert-propyl alcohol, tert-butyl alcohol-tert-amyl alcohol, tert-butyl alcoho-n-butyl alcohol, tert-butyl alcohol-benzyl alcohol, etc. The double metal complex catalyst product has high activity, high stability, low consumption and long storage life over two years. The double metal complex catalyst is used in synthesizing poly(ether polyol) with great molecular weight, low unsaturation degree and relatively narrow molecular weight distribution, and it is one ideal material for preparing high performance polyurethane.

Description

(1) Technical field [0001] The present invention relates to the invention of a double metal complex catalyst (DMC) and its preparation method, more specifically, relates to the preparation of high relative molecular weight, low unsaturation polyether polyether compound for the ring-opening polymerization of oxidized olefins. The invention of a double metal complex catalyst (DMC) of alcohol and its preparation method. (2) Background technology [0002] As we all know, since the industrial production of polyurethane in 1937, it has developed extremely rapidly because of its many advantages. At present, the consumption of polyurethane ranks fifth after polyethylene, polyvinyl chloride, polypropylene and polystyrene. It goes without saying that polyether polyol, which is an important raw material for polyurethane, also develops rapidly and shows a trend of increasing year by year. [0003] The traditional production method of polyether polyols is to prepare polyether polyols b...

Claims

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Application Information

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IPC IPC(8): B01J31/24C08G65/12
Inventor 周集义王文浩王建伟李俊贤徐保国贾利亚李新豪郭智臣
Owner LIMING RES INST OF CHEM IND
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