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Organic phosphazene salt catalyst as well as preparation method and application thereof

An organic phosphazene and catalyst technology, applied in the field of organic phosphazene salt catalyst and its preparation, can solve the problems of high unsaturation, difficult separation, low molecular weight of polyether, etc., and achieve the effect of high molecular weight and narrow molecular weight distribution

Active Publication Date: 2018-07-03
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these two types of catalysts have obvious limitations. For example, the polyether produced by the KOH catalyst has low molecular weight and high degree of unsaturation, and the DMC catalyst is difficult to separate from the product, and is not suitable for the production of ethylene oxide-terminated polyether products.
When a metal-containing catalyst is used to produce a polymer, the residual metal catalyst leads to an increase in the toxicity of the polymer, which is likely to have adverse effects on the human body
[0003] Therefore, the means of preparing polymers still needs to be improved

Method used

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  • Organic phosphazene salt catalyst as well as preparation method and application thereof
  • Organic phosphazene salt catalyst as well as preparation method and application thereof
  • Organic phosphazene salt catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Under the protection of nitrogen, take benzyl alcohol (1.0mL, 10.0mmol) and dissolve it in 50.0mL tetrahydrofuran, slowly add chopped metal sodium (115.0mg, 5.0mmol), react at room temperature for 12h, add inorganic phosphazene salt [(Me 2 N) 3 P=N] 4 P + Cl - (3.87g, 5.0mmol), react at room temperature for 2h, filter to remove insoluble matter to obtain 0.1mol / L tetrahydrofuran solution of organophosphazene salt catalyst.

Embodiment 2

[0074] Under the protection of nitrogen, take benzyl alcohol (1.0mL, 10.0mmol) and dissolve it in 50.0mL toluene, slowly add chopped sodium metal (115.0mg, 5.0mmol), and react at room temperature for 12h, then add inorganic phosphazene salt [(Me 2 N) 3 P=N] 4 P + Cl - (3.87g, 5.0mmol), react at room temperature for 2h, filter to remove insoluble matter to obtain 0.1mol / L toluene solution of organic phosphazene salt catalyst.

Embodiment 3

[0076] Under the protection of nitrogen, take ethylene glycol (0.55mL, 10.0mmol) and dissolve it in 50.0mL of toluene, slowly add chopped metal sodium (11.5mg, 0.5mmol), react at room temperature for 12h, add inorganic phosphazene salt [(Me 2 N) 3 P=N] 4 P + Cl - (387.5mg, 0.5mmol), react at room temperature for 2h, filter to remove insoluble matter to obtain 0.1mol / L toluene solution of organic phosphazene salt catalyst.

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Abstract

The invention discloses an organic phosphazene salt catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing an initiator, sodiumand inorganic phosphazene salt, and reacting to obtain the organic phosphazene salt catalyst. By adopting the method, the organic phosphazene salt catalyst can be prepared in a mild condition; and theprepared organic phosphazene salt catalyst can be used for catalyzing multiple polymerization reactions to efficiently prepare a polymer with large molecular weight and narrow molecular weight distribution and without metal elements.

Description

technical field [0001] The invention relates to the field of organic chemistry, in particular, the invention relates to an organic phosphazene salt catalyst and its preparation method and application. Background technique [0002] Polyether and polyester can be prepared by anionic ring-opening polymerization of epoxy compounds or ester monomers. At present, the catalysts used in the ring-opening polymerization of epoxy compounds are mainly alkali metal hydroxides (such as KOH) and double metal nitrile catalysts (DMC). However, these two types of catalysts have their own obvious limitations. For example, the polyether produced by the KOH catalyst has low molecular weight and high degree of unsaturation, and the DMC catalyst is difficult to separate from the product, and is not suitable for the production of ethylene oxide-terminated polyether products. When a metal-containing catalyst is used to produce a polymer, the residual metal catalyst leads to an increase in the toxic...

Claims

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Application Information

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IPC IPC(8): C08G63/87C08G63/08C08G65/28C08G64/30C08F4/00C08F120/14C08G63/664C08G69/14C08G69/16C08G77/04C08G77/08C07F9/54
CPCC07F9/5463C08F4/00C08F120/14C08G63/08C08G63/664C08G63/823C08G63/87C08G64/30C08G65/2606C08G65/2675C08G69/14C08G69/16C08G77/04C08G77/08
Inventor 李志波任传利赵娜刘绍峰
Owner QINGDAO UNIV OF SCI & TECH