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Complex catalyst contg. two or more than two kinds of bimetal cyanide, prepn. method and application thereof

A double metal cyanide and catalyst technology, applied in the production of polyether polyols, the field of complex catalysts containing two or more double metal cyanides, can solve the problem of poor storage stability, uneconomical, expensive, etc. problem, to achieve the effect of wide applicable temperature range and high product activity

Inactive Publication Date: 2003-12-03
SINOPEC JINLING PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The main problem that DMC catalyst exists at present is its activity and stability problem, and activity is manifested in two aspects: reaction time (especially induction time) and catalyst consumption, before DMC cat is slow to several hours even dozens of hours just can start to react, this It is uneconomical to apply in industry; the dosage requirement is low, on the one hand because of its high price, on the other hand it is for the purpose of exempting the prepared polyether from post-processing (DMC cat30ppm or less), and the stability is stable storage and use It is required to adapt to a wide reaction temperature range, especially high temperature resistance, and DMC cat with poor stability will bring trouble or even huge losses to users
It is difficult to guarantee the activity of DMC cat that requires a basic amorphous state or a basic crystalline state, and the storage stability is also poor
[0020] Even the best DMC cat activity needs to be improved. In the above patents, the activity can be exempted from post-processing, which is also the case of making higher molecular weight M n It can only be achieved when it is close to 4000, and it is difficult to popularize

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example

[0015] Take USP5158922 (Arco Company) as the dividing line, represented by it and L in the previous DMC cat 1 It is basically Glyme (dimethoxyethane) or Diglyme (diethylene glycol dimethyl ether), which are characterized by high cat crystalline content, >35%, and low activity, known as traditional DMC cat. USP5470813 (Arco company) finds that two kinds of salt solutions are strongly mixed by homogenizer etc., destroys the crystallization condition of catalyst, makes organic complexing agent with TBA, makes amorphous state cat, (crystalline state DMC compound 35wt%) obtained by simple stirring, the activity is 65% greater at the same 100ppm (relative to the final product, hereinafter the same), and the activity is 200% greater at 130-250ppm. Example: Polyoxypropylene Triol (M n =700) 685g as initiator, cat250ppm, reaction temperature 105°C, induction time 85min, maximum reaction rate (reaction pressure maintained 2 The amount makes xn =700) 70g as initiator, cat100ppm, reaction...

Embodiment 1

[0044] The specific embodiment embodiment 1 system {Zn 3 [Co(CN) 6 ] 2 +0.06Ni 3 [Co(CN) 6 ] 2 +0.06Fe[Co(CN) 6 ]}·ZnCl 2 0.5H 2 O 0.15TBA 0.015P 0.092A In a batching kettle, put 22kg ZnCl 3 Dissolve in 50L TBA / 90L deionized water, in another batching kettle, 5.5kg K 3 [Co(CN) 6 ] was dissolved in 50L TBA / 90L deionized water, and the two solutions were added to the reactor within 30 minutes, and mixed at a high speed circulation (660L / min), and 0.33Kg Ni was added after the circulation was continued for 1.5 hours 3 [Co(CN) 6 ] 2 and 0.15Kg Fe[Co(CN) 6 ] into the built-in separation membrane pipeline, wash with 300L of 50% TBA solution (0.5% concentration A), and then replace part of the water in the slurry with 200L pure TBA for 3 hours after 5 hours, continue membrane separation, and concentrate to the slurry 300L. Add 0.6kg polyoxypropylene trihydric alcohol (Mn=3000) and 1.8kg A, circulate for 2 hours, press or suck the slurry into a filter press, press filter...

Embodiment 4

[0049] Operation is the same as embodiment 1, but in a batching still, with 21kg ZnCl 2 , 1.8kg FeCl 3 , 1.2kgNiSO 4 Dissolve in 50LTBA / 90L deionized water, in another batching kettle, 5.9kg K 3 [Co(CN)] 6 Dissolve in 50L TBA / 90L deionized water. Get cat〔V〕8.4kg

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Abstract

A complexing catalyst contains two or more than two bimetallic cyanides (BMC), organic coordination agent, soluble metallic salt, polyether polyol, and organic siloxane. Its advantages are storage stability, high reaction activity, and high resistance to high reaction temp. up to 210 deg.C, and short inducing time.

Description

technical field [0001] The present invention relates to a complex catalyst containing double metal cyanide (hereinafter referred to as DMC), especially a complex catalyst containing two or more double metal cyanide and its preparation method and on the production of polyether polyol Applications. Background technique [0002] Polyether polyol is the main raw material in the production of polyurethane. It is formed by ring-opening polymerization of low molecular weight polyol and alkylene oxide under the action of a catalyst. Since the invention of the double metal cyanide complex catalyst (hereinafter referred to as DMC cat) by the General Tire Rubber Company of the United States in the 1970s for the ring-opening polymerization of epoxides, there have been continuous patent literature reports in the past forty years, especially in the 1990s Since then, Arco has more patents in this area, and the composition of DMC complex catalysts is generally: [0003] m a 1 [M 2 (CN)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/26
Inventor 黎松戚渭新周玉成胡冰韩勇袁明蔚东成丁国来刘颖
Owner SINOPEC JINLING PETROCHEMICAL CO LTD
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