China Petroleum Chemical Corporation

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

Beijing Dongfang Biotech Co., Ltd.

Xianzhong Li

Jing Yan Ma

Haitao Liu

Mingzhi Gao

Changxiu Li

Xiaoxia Cai

Jianhua Chen

Jixing Ma

Ming Wang

Xiaofan Zhang

Jianjun Hu

Zhihui Zhang

Ruilin Duan

Changyou Ma

Linna Yang

Xiaodong Wang

Tianyi Li

Xianhong Bai

Juxiu Yang

Jing Ma

Chunmin Ding

Lingyan Xing

Jiyu Li

Hua Tu

The present invention provides a catalyst component for olefin polymerization, obtained by a reaction of magnesium, titanium, halogen and an internal electron donor, the internal electron donor comprising an imine compound as shown in Formula Z. The present invention also provides a preparation method of the catalyst component, and a catalyst for olefin polymerization containing the same. When the catalyst of the present invention is used for olefin polymerization reaction, the catalyst has a high activity, and a slow rate of activity decay, and the obtained polymer has a high isotacticity index, and a wide molecular weight distribution. 

Catalyst component for olefin polymerization, and catalyst containing the same

The present invention discloses a catalyst component for propene polymerization, comprising titanium, magnesium, halogen, and internal electron donor A, wherein said internal electron donor A is selected from the compounds as shown in Formula I, in Formula I, R is selected from hydrogen, hydroxyl, and substituted or unsubstituted C-Chydrocarbyl, preferably from hydrogen, hydroxyl, and substituted or unsubstituted C-Calkyl, C-Caryl, C-Cheteroaryl, C-Calkylaryl and C-Carylalkyl; Rand Rmay be identical to or different from each other, and are selected from hydrogen and substituted or unsubstituted C-Chydrocarbyl, preferably from hydrogen and substituted or unsubstituted C-Calkyl, C-Caryl, C-Calkylaryl and C-Carylalkyl. According to the present invention, by using the compound as shown in Formula I as internal electron donor compound for propene polymerization, the catalyst has a higher activity, and a slow rate of delay of activity. The obtained polymer has not only a wider molecular weight distribution, but also a high melt index and isotacticity.

Catalyst component for propene polymerization, preparation method thereof, and catalyst containing the same

The present disclosure discloses a catalyst composition for olefin polymerization, comprising the following components: a): a solid catalyst component containing magnesium, titanium, halogens, and at least one internal electron donor having a lone pair of electrons; b): an aluminum alkyl compound; and c): an external electron donor containing a first external electron donor C1, which is a malonate compound. In the present disclosure, a catalyst composition having an external electron donor that contains a malonate compound is used in olefin polymerization, in particular propene polymerization, and can significantly improve catalytic activity and hydrogen response of the catalyst and expand molecular weight distribution of polymers, which facilitates development of different polymers.

Catalyst composition for olefin polymerization and application of same

A catalyst component for olefin polymerization comprising magnesium, titanium, halogen and electron donor, wherein the electron donor is selected from at least one of the diol diester compounds, when the diol diester comprised contains a certain amount of isomer with Fischer projection formula as shown in Formula (II), the activity and stereospecificity of the catalyst are greatly improved, especially in the production of polymers with high melt index, the isotactic index of the obtained polymers is improved substantially. 

Catalyst component for olefin polymerization reaction and catalyst comprising same

Provided are a fusion protein of Exendin-4 and its analog, the preparation method and use thereof. The fusion protein is obtained by fusing of Exendin-4 or its analog to Fc region of human IgG2 via a linking peptide, which has the better stability and prolonged serum half-life, and can be used for treating diabetes and obesity.

Fusion protein of Exendin-4 and its analog, preparation method and use thereof

The present invention provides a catalyst component for polymerization of olefin CH&#x2550;CHR, in which R is hydrogen or C-Calkyl or aryl, comprising magnesium, titanium, a halogen and an electron donor compound (a) which is at least one selected from the group consisting of dibasic ester compounds of the formula (I), and said catalyst component optionally further comprising an electron donor compound (b) selected from the group consisting of aliphatic dicarboxylic esters and aromatic dicarboxylic esters, and/or an electron donor compound (c) selected from the group consisting of 1,3-diether compounds of formula (IV):  

Catalyst component for olefin polymerization and catalyst comprising the same

Growing community of inventors

Beijing, China

Xianzhong Li