China Petroleum & Chemical Corporation

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

Beijing Kohler Ltd.

Junhui Zhang

Jie Lin

Zifang Guo

Junling Zhou

Xiaofan Zhang

Hui Zhao

Rong Gao

Dongbing Liu

Xinyang Li

Qingqiang Gou

Jingyan An

Jingjing Lai

Yuanning Gu

Yan Li

Jie Fu

Yu Wang

Haitao Liu

Ting Huang

Dong Ma

Shijun Zhang

Jin Zhao

Xianzhi Xia

Wenbo Song

Xiaojun Wang

Jigui Zhang

Hongtao Wang

Zhufang Sun

Shiyuan Xu

Tingjie Huang

Lin Qi

Meiyan Fu

Ruen Wang

Wei Cen

Lian Yan

Yanhong Wan

Zhaoyang Cheng

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

A catalyst system for olefin polymerization contains a main catalyst and a cocatalyst. The cocatalyst contains a twelve-membered ring compound represented by formula (M). The catalyst system is suitable for preparing polypropylene products having high stereoregularity and low ash, and can regulate the melt index of the products within a wide range by adjusting the amount of hydrogenation. It is also suitable for copolymerization systems to improve the copolymerization yield.

Catalyst system for olefin polymerization and use thereof

A method that includes heating a bar having an outer diameter and a length to a first temperature for a first time; extruding the heated bar to form a hollow blank having a wall thickness; forming a semi-finished blank by closing one end; bending the semi-finished blank to have an angle between first and second parts of the semi-finished blank; placing the bent semi-finished blank in a die, which is heated to a second temperature; forming a shell by injecting a gas onto or into the bent semi-finished blank after closing the die through a gas inlet in the die at a pressure for a second time, which causes the bent semi-finished blank to fit a cavity of the bathroom hardware shell shaping die; removing the shell from the die and forming a water faucet hole therein; and plating an outer surface of the shell with a coating.

Production method of bathroom hardware shells

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Beijing, China

Junhui Zhang