China Petroleum & Chemical Corporation

Lenovo (beijing) Limited

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

Beijing Lenovo Software Ltd.

China Petroleum & Chemical Corporation Beijing Research Institute of Chemical Industry

Levono (beijing) Co., Ltd.

Rong Gao

Zifang Guo

Junling Zhou

Dongbing Liu

Xinyang Li

Jingjing Lai

Jie Fu

Wenbo Shi

Jian Xu

Jie Lin

Xiaofan Zhang

Shiyuan Xu

Jingyan An

Junhui Zhang

Qingqiang Gou

Tingjie Huang

Yuanning Gu

Yan Li

Hui Zhao

Dong Ma

Shijun Zhang

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

Electronic device

Docking device

An electronic apparatus includes a first main body and a second main body. The first main body includes a first surface and a second surface opposite the first surface. The second main body includes a base, a first fixing block and a second fixing block each protrusively arranged on the base and opposite to each other. When the first main body is inserted into the second main body with the first surface facing the second main body, a first end of the first main body is clamped between the first fixing block and the base and is supported by the second fixing block. When the first main body is inserted into the second main body with the second surface facing the second main body, the first end is clamped between the second fixing block and the base and is supported by the first fixing block.

Electronic apparatus

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Beijing, China

Rong Gao