Cyanide complex catalyst, and its preparing method and use

A catalyst, cyanide technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc. Narrow, short induction period, narrow molecular weight distribution effect

Inactive Publication Date: 2005-07-20
LIMING RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many studies, only one or two of them are used as ligands, and there is no report on the comprehensive utilization of the three

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1 tert-butyl alcohol-diethylene glycol dibenzoate-polyether coordination catalyst

[0038] Solution A: 20g of zinc chloride, 30ml of tert-butanol, and 30ml of water were mixed and stirred until completely dissolved.

[0039] Solution B: 8gK 3 Co(CN) 6 , 150ml of water and stir until completely dissolved.

[0040]In a 1000ml three-necked flask, add solution A, and add solution B dropwise at 40°C. After the dropwise addition, 250ml of 50% tert-butanol aqueous solution was added, followed by 2g of diethylene glycol dibenzoate and 2g of polypropylene oxide polyether with a molecular weight of 4000 and two functionalities, dispersed evenly, and filtered. The filter cake was redispersed in 250ml of 70% tert-butanol aqueous solution, 2g of diethylene glycol dibenzoate and 2g of polypropylene oxide polyether with a molecular weight of 4000 were added, dispersed evenly, and filtered. Disperse the filter cake in 250ml of tert-butanol, add 1g of diethylene glycol di...

Embodiment 2

[0043] Embodiment 2 tert-butyl alcohol-dipropylene glycol dibenzoate-polyether coordination catalyst

[0044] Solution A: 20g of zinc chloride, 30ml of tert-butanol, and 30ml of water were mixed and stirred until completely dissolved.

[0045] Solution B: 8gK 3 Co(CN) 6 , 150ml of water and stir until completely dissolved.

[0046] In a 1000ml three-necked flask, add solution A, and add solution B dropwise at 40°C. After the dropwise addition, 250ml of 50% tert-butanol aqueous solution was added, followed by 2g of dipropylene glycol dibenzoate and 2g of polypropylene oxide polyether with a molecular weight of 4000, dispersed evenly, and filtered. The filter cake was redispersed in 250ml of 70% tert-butanol aqueous solution, 2g of dipropylene glycol dibenzoate and 2g of polypropylene oxide polyether with a molecular weight of 4000 were added, dispersed evenly, and filtered. The filter cake was redispersed in 250ml of tert-butanol, 1g of dipropylene glycol dibenzoate and 1g ...

Embodiment 3

[0050] Example 3 tert-butanol-dimethoxyethyl phthalate-polysiloxane compound coordination catalyst

[0051] The polysiloxane compound is a product of the U.S. High Schmitt Company, the brand is L-580, and the number average molecular weight is 3000.

[0052] Solution A: 20g of zinc chloride, 30ml of tert-butanol, and 30ml of water were mixed and stirred until completely dissolved.

[0053] Solution B: 8gK 3 Co(CN) 6 , 150ml of water and stir until completely dissolved.

[0054] In a 1000ml three-necked flask, add solution A, and add solution B dropwise at 40°C. After the dropwise addition, add 250ml of 50% tert-butanol aqueous solution, then add 2g of dimethoxyethyl phthalate and 2g of L-580, disperse evenly, and filter. The filter cake was redispersed in 250ml of 70% tert-butanol aqueous solution, 2g of dimethoxyethyl phthalate and 2g of L-580 were added, dispersed evenly, and filtered. Disperse the filter cake in 250ml of tert-butanol, add 1g of dimethoxyethyl phthalate...

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Abstract

The present invention relates to a cyanide complex compound catalyst, its preparation method and application in polyether. Said catalyst is made up by means of common coordination of three ligands of organics small molecule, functional compound and functional polymer which are introduced into cyanide complex compound. Said organic small molecule ligand is one or several kinds of alcohol, ether, aldehyde, ketone, ester or acidamine, its molecular weight is less than 200; the functional compound is aromatic carboxylic acid ester compound, its molecular weight is less than 500, and the functional polymer is macromolecular compound containing oxygen, nitrogen, phosphorus and sulfur, and its molecular weight is greater than 500.

Description

technical field [0001] The invention relates to a cyanide complex catalyst (hereinafter referred to as DMC) and its preparation method and its application in the preparation of polyether polyol. Background technique [0002] The DMC catalyst is usually a cyanide-coordinated double metal complex precipitate. Commonly used double metal cyanide complexes include hexacyanocobalt zinc, hexacyanoferric (2 or 3 valent) zinc, tetracyanide nickel zinc, hexacyanoiridium zinc and cyanide complexes in which zinc is replaced by iron, cobalt, nickel, etc. compound. When this simple cyanide complex is used as a catalyst, the activity is very low, and the DMC catalyst prepared by adding water-soluble metal salt and other ligands can greatly improve its catalytic activity. Its preparation process is generally to add organic ligands to the suspension of the newly generated double metal cyanide complex for complexation reaction, and then use the aqueous solution of organic ligands or organic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/16C08G65/04
Inventor 周集义王文浩王建伟李俊贤贾利亚李新豪常伟林白森虎
Owner LIMING RES INST OF CHEM IND
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