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Double metal cyanide catalysts

A double metal cyanide and catalyst technology, applied in the direction of physical/chemical process catalyst, organic compound/hydride/coordination complex catalyst, chemical/physical process, etc., can solve the problem of long catalyst induction period

Inactive Publication Date: 2004-06-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that there is a longer catalyst induction period in the prior art, and a new double metal cyanide catalyst is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A, preparation of double metal cyanide complex catalyst

[0023] 8 g of potassium hexacyanocobaltate was dissolved in 140 ml of distilled water. Slowly add 38.5% (weight) of ZnCl at 8000 rpm 2 65 grams of aqueous solution, then add a mixture of 100 milliliters of tert-butanol and 100 milliliters of distilled water, stir for 20 minutes, add 14.7 grams of dimethyl phthalate and 200 milliliters of distilled water, stir for 10 minutes, then vacuum filter with a sand core funnel . Add 150 milliliters of tert-butanol and 60 milliliters of distilled water to the obtained solid, stir at a speed of 8000 rpm for 10 minutes, then add 10.6 grams of dimethyl phthalate, stir for 10 minutes, and centrifuge. Add 200 ml of tert-butanol to the obtained solid, stir at 8000 rpm for 10 minutes, then add 6.7 g of dimethyl phthalate, stir for 10 minutes, and centrifuge. The solid was vacuum-dried at 60° C. to a constant weight to obtain 12.9 g of solid powder catalyst I.

[0024] After an...

Embodiment 2

[0039] A, preparation of double metal cyanide complex catalyst

[0040] 8 g of potassium hexacyanocobaltate was dissolved in 140 ml of distilled water. Slowly add 38.5% (weight) of ZnCl at 8000 rpm 2 65 grams of aqueous solution, then add a mixture of 100 milliliters of tert-butanol and 100 milliliters of distilled water, stir for 20 minutes, add 14.7 grams of diethyl phthalate and 200 milliliters of distilled water, stir for 10 minutes, then vacuum filter with a sand core funnel . Add 150 milliliters of tert-butanol and 60 milliliters of distilled water to the obtained solid, stir at a speed of 8000 rpm for 10 minutes, then add 10.6 grams of diethyl phthalate, stir for 10 minutes, and centrifuge. Add 200 ml of tert-butanol to the obtained solid, stir at 8000 rpm for 10 minutes, then add 6.7 g of diethyl phthalate, stir for 10 minutes, and centrifuge. The solid was vacuum-dried at 60° C. to constant weight to obtain 11.2 g of solid powder Catalyst II.

[0041] After analys...

Embodiment 3

[0047] A, preparation of double metal cyanide complex catalyst

[0048] 8 g of potassium hexacyanocobaltate was dissolved in 140 ml of distilled water. Slowly add 38.5% (weight) of ZnCl at 8000 rpm 2 65 grams of aqueous solution, then add a mixture of 100 milliliters of tert-butanol and 100 milliliters of distilled water, stir for 20 minutes, add 14.7 grams of dibutyl phthalate and 200 milliliters of distilled water, stir for 10 minutes, then vacuum filter with a sand core funnel . Add 150 milliliters of tert-butanol and 60 milliliters of distilled water to the obtained solid, stir at a speed of 8000 rpm for 10 minutes, then add 10.6 grams of dibutyl phthalate, stir for 10 minutes, and centrifuge. Add 200 ml of tert-butanol to the obtained solid, stir at 8000 r / min for 10 minutes, then add 6.7 g of dibutyl phthalate, stir for 10 minutes, and centrifuge. The solid was vacuum-dried at 60° C. to a constant weight to obtain 12.4 g of solid powder Catalyst III.

[0049] After a...

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Abstract

The present invention relates to one kind of double-metal cyanide catalyst and aims at solving the problem of catalyst with longer induction period. The catalyst includes double-metal cyanide mixture, organic C4-C10 alcohol with tertiary alcohol structure and organic ester selected from fatty ester, aromatic monoester, aromatic biester and their mixture. It may be used in the industrial production of low unsaturation degree polyether polyol.

Description

technical field [0001] The invention relates to a double metal cyanide catalyst, in particular to a double metal cyanide catalyst with high activity and short induction period. Background technique [0002] As we all know, when alkali is used as a catalyst (mainly KOH) to prepare polyether polyol by epoxide polymerization, due to the low catalytic activity, the crude product needs to undergo post-treatment processes such as acid neutralization, dehydration and decolorization. The obtained polyether polyol has a high degree of unsaturation, which will adversely affect polyurethane products, and it is also difficult to prepare high-molecular-weight polyether polyol with an alkaline (KOH) catalyst. [0003] Double metal cyanide catalysts can be used in the polymerization of epoxides to prepare low unsaturation polyether polyols, which can be used to prepare products such as polyurethane coatings, elastomers, foams, sealants and adhesives. [0004]...

Claims

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Application Information

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IPC IPC(8): B01J27/26B01J31/02
Inventor 涂建军金晖蔡丽萍王荣伟张惠明张志华
Owner CHINA PETROLEUM & CHEM CORP
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