Method for preparing polymers

A polymer and block polymer technology, applied in the field of copolymers, can solve the problems that the hydrogenation degree of the hydrogenation product needs to be improved, the reaction activity of the hydrogenation catalyst is low, and the reaction temperature is high, so as to reduce the preparation cost and improve the hydrogenation degree , the effect of simple operation

Active Publication Date: 2017-09-26
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of high reaction temperature, high energy consumption, low reactivity of hydrogenation catalyst and the degree of hydrogenation of hydrogenation products to be improved in the hydrogenation process of unsaturated polymers in the existing method, and to provide a A polymer preparation method with low reaction temperature, simple operation, low energy consumption, high hydrogenation reaction activity of hydrogenation catalyst, and significantly improved hydrogenation degree of hydrogenation products

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preparation example Construction

[0015] The invention provides a kind of preparation method of polymer, and this method comprises the steps:

[0016] (1) mixing the glue solution of the unsaturated polymer with a hydrogenation catalyst, the hydrogenation catalyst containing organic compounds of organoaluminum and Group VIIIB metals;

[0017] (2) The mixture obtained in step (1) is subjected to the first hydrogenation reaction and the second hydrogenation reaction in the presence of hydrogen, the reaction temperature of the first hydrogenation reaction is -10 ~ 15 ° C, the second hydrogenation reaction The reaction temperature of hydrogenation reaction is 40-120 ℃;

[0018] (3) removing the solvent in the reaction product obtained in step (2).

[0019] In the method step (1) of the present invention, there is no particular limitation on the method of mixing the glue solution of the unsaturated polymer with the hydrogenation catalyst, and it can be various methods commonly used in the art, for example, adding ...

Embodiment 1-10

[0040] Examples 1-10 of the present invention serve to illustrate the preparation of the polymers of the present invention.

[0041] (1) dissolving the unsaturated polymer in an organic solvent to obtain a glue;

[0042] (2) Add the glue solution of unsaturated polymer in the reaction kettle, fill and discharge degassing, then add hydrogenation catalyst, mix;

[0043] (3) Filling with hydrogen, stirring, and reacting, the conditions of the reaction include: the reaction temperature is b°C, the hydrogen pressure is a MPa, and the reaction time is c minutes;

[0044] (4) be warming up to e ℃, keep the hydrogen pressure as d MPa, and react for f hours;

[0045] (5) The hydrogenated product was condensed and precipitated by ethanol, and dried in vacuum at 60° C. for 8 hours.

[0046] In embodiment 1-10, in unsaturated polymer, glue solution concentration (being the mass percentage concentration of unsaturated polymer in glue solution), organic solvent, Al / Ni in hydrogenation cat...

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Abstract

The invention relates to the field of copolymers, and discloses a method for preparing polymers. The method includes steps of (1), mixing glue solution of unsaturated polymers and hydrogenation catalysts with one another; (2), sequentially carrying out first hydrogenation reaction and second hydrogenation reaction on mixtures obtained at the step (1) in the presence of hydrogen; (3), removing solvents in reaction products obtained at the step (2). The hydrogenation catalysts contain organic compounds of organic aluminum and metal of VIIIB groups. The reaction temperatures of the first hydrogenation reaction range from -10 DEG C to 15 DEG C, and the reaction temperatures of the second hydrogenation reaction range from 40 DEG C to 120 DEG C. The method for preparing the polymers has the advantages that the hydrogenation reaction activity of the hydrogenation catalysts and the hydrogenation degrees of hydrogenation products can be improved, and the method is easy to operate and implement, short in reaction time and low in preparation cost.

Description

technical field [0001] The invention relates to the field of copolymers, in particular to a method for preparing a polymer, in particular to a method for hydrogenating an unsaturated polymer. Background technique [0002] In recent years, with the continuous development of automobile manufacturing, mechanical processing, metallurgical sealing, engineering construction, petroleum industry and other industries, the demand for excellent properties of polymers has become more and more urgent. In order to make some unsaturated polymers have more excellent properties such as heat resistance, high temperature resistance, and oxidation resistance in addition to their excellent properties, they are often realized by hydrogenating their unsaturated double bonds. Especially for polymers containing olefinic unsaturated bonds, it is generally required that the hydrogenated product has a higher degree of hydrogenation in order to realize its high performance more efficiently. [0003] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F8/04C08F297/04C08F4/70C08C19/02
CPCC08C19/02C08F4/70C08F8/04C08F2810/50C08F297/04C08F297/046
Inventor 毕海鹏邵明波李建成徐林王雪刘天鹤
Owner CHINA PETROLEUM & CHEM CORP
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