China Petroleum Chemical Corporation

Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation

Netqin Mobile (beijing) Co., Ltd

China Petroleum & Chemical Corporation Beijing Research Institute of Chemical Industry

China Petroleum & Chemical Corporation

Xinyang Li

Zifang Guo

Junling Zhou

Rong Gao

Dongbing Liu

Jingjing Lai

Jie Fu

Jie Lin

Xiaofan Zhang

Shiyuan Xu

Jingyan An

Junhui Zhang

Qingqiang Gou

Tingjie Huang

Yuanning Gu

Yan Li

Hui Zhao

Wei Wang

Dong Ma

Shijun Zhang

Yu Lin

Shihong Zou

Wenbo Song

Hongtao Wang

Ruen Wang

Yanhong Wan

A preparation method for a copolymer includes the step(s) of contacting an olefin and an unsaturated carboxylic acid shown in Formula II or a derivative of the unsaturated carboxylic acid shown in Formula II with a catalyst and optionally a chain transfer agent for reaction in the presence of an alkane solvent to obtain the copolymer. The copolymer is a spherical and/or spherical-like copolymer.

Copolymer of olefin and unsaturated carboxylic acid or unsaturated carboxylic acid derivative

A diimine metal complex represented by Formula I, a preparation method therefor, and application thereof are provided. The complex is used as a main catalyst in catalysts for olefin polymerization, and can achieve catalytic ethylene polymerization at a high temperature to prepare high molecular weight branched polyethylene.

Diimine metal complex, preparation method therefor, and application thereof

A method for preparing an olefin-olefinic alcohol copolymer and an olefin-olefinic alcohol copolymer prepared by the method are provided. The catalyst used in the method for preparing the olefin-olefinic alcohol copolymer has a diimine metal complex as shown in Formula I.

Method for preparing olefin-polar monomer copolymer

An amino-imine metal complex represented by Formula I, its preparation method and an application thereof are provided. The complex is used as a main catalyst in catalysts for olefin polymerization, and can catalyze the polymerization of ethylene at a relatively high temperature to prepare branched polyethylene having high molecular weight.

Amino-imine metal complex and preparation method therefor and application thereof

The invention provides an olefin-olefinic alcohol copolymer and a preparation method thereof, said copolymer comprising a spherical and/or spherical-like polymer. The copolymer provided by the invention exhibits a good morphology and has good prospects in industrial use.

Olefin-olefinic alcohol copolymer, and preparation method therefor

The present disclosure provides a method for blocking crank calls by using cloud computing and a system thereof. In the method, a client(s) uploads a blacklist to a server; the server makes statistic according to blacklist data uploaded by the client(s) and determines a particular phone number be a crank phone number, generates an anti-crank policy and updates the generated anti-crank policy to the client(s); when receiving a call or a message from the crank phone number, the client executes the anti-crank policy.

Method for blocking crank calls by using cloud computing and a system thereof

Growing community of inventors

Beijing, China

Xinyang Li