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Methd for preparing polyketone by means of carbon oxide and olepine copolymerization

A technology for the copolymerization of carbon monoxide and olefins, which is applied in the field of polyketones prepared by the copolymerization of carbon monoxide and olefins, which can solve the problems of low catalytic activity, high catalyst price, and high residual amount of heavy metal palladium, and achieve the effect of improving catalytic activity and reducing costs

Inactive Publication Date: 2004-02-25
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such polymerization method, its shortcoming is that its price of the catalyst used is higher and catalytic activity is lower, and the residual amount of heavy metal palladium in the polyketone product is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] In a 100mL stainless steel autoclave with electromagnetic stirring, add 6mL of methanol, and add the catalyst. The catalyst composition is: 0.03mmol of palladium acetate, 0.04mmol of yttrium acetate, 0.25mmol of 2,2'-bipyridyl, 0.45mmol of p-toluenesulfonic acid, and Benzoquinone 10.0mmol, styrene 15mL, and then keep the pressure of carbon monoxide at 2.0MPa, react at 60°C for 2 hours, terminate the reaction by releasing the pressure, precipitate with industrial ethanol, filter, wash the product, and vacuum dry at 60°C. 7.02 g of the copolymerized product was obtained, and the catalytic activity was 1104 g / (g·h). The glass transition temperature Tg is 247.5°C, and the melting point is 278.8°C.

Embodiment 2

[0012] Under the same conditions as in Example 1, a copolymer of carbon monoxide and styrene was prepared. The difference is that the rare earth metal yttrium acetate in the catalyst was replaced by neodymium acetate to obtain 6.55 grams of copolymerization product with a catalytic activity of 1030 g / (g·h).

Embodiment 3

[0014] Under the same conditions as in Example 2, a copolymer of carbon monoxide and styrene was prepared. The difference is that the acetate of the rare earth metal neodymium in the catalyst is replaced by the phosphate ester salt of neodymium to obtain 8.01 grams of copolymers with a catalytic activity of 1260 g / (g·h).

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PUM

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Abstract

The method for preparing polyvetone by means of copolymerization of carbon monoxide and olefin hydrocarbon uses the carbon monoxide and olefin hydrocarbon including ethylene, styrene and its derivative as raw material, and make them produce copolymerization reaction in the presence of catalyst, the composition of said catalyst contains palladium acetate, 2,2'-bipyridine and p-benzoquinone. The catalyst also contains the following components: acetates of yttrium, neodymium, praseodymium, lanthanum and cerium, p-toluenesulfonate, phosphate salt or their mixture and p-toluenesulfonic acid or aminosulfonic acid of fluoboric acid or their mixture.

Description

technical field [0001] The invention relates to a method for preparing polyketone by copolymerization of carbon monoxide and olefin, which belongs to the preparation technology of polyketone. Background technique [0002] The existing method for preparing polyketones by the polymerization of carbon monoxide and olefins including ethylene, styrene and derivatives thereof is to dissolve the olefins in a solvent including methanol, then feed carbon monoxide into the solution, and under the action of a catalyst, the Prepared by polymerization under the conditions of 20-150°C and 0.1-20MPa. The catalyst used is composed of palladium compound and anion or other salts of acids with a Pka value less than 2, bidentate ligands containing phosphine, nitrogen, oxygen and sulfur, and an oxidizing agent. The shortcoming of such a polymerization method is that the price of the catalyst used is relatively high and its catalytic activity is low, and the residual amo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G67/02
Inventor 郭锦棠刘冰许湧深王新英孙经武
Owner TIANJIN UNIV
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