China Petroleum Chemical Corporation

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

Other

China Petrochemical Corporation

Beijing Research Institute of Chemical Industry Sinopec

Juxiu Yang

Mingzhi Gao

Xiaodong Wang

Haitao Liu

Changxiu Li

Tianyi Li

Zhulan Li

Ming Wang

Jing Yan Ma

Jian Zhou

Yun Jing Zhao

Xianzhong Li

Yun Zhao

Jing Ma

Chunmin Ding

Yantoo Yang

Weihua Feng

Lingyan Xing

Jiyu Li

Chunming Ding

Jun Wang

Yantao Yang

The present invention provides a solid catalyst component for the polymerization of olefins, comprising magnesium, titanium, a halogen and an electron donor, wherein said electron donor comprises at least one selected from the group consisting of ester of polyol of the formula (I):RCO&#x2014;O&#x2014;CRR&#x2014;A&#x2014;CRR&#x2014;O&#x2014;CO&#x2014;R&#x2003;&#x2003;(I)wherein, Rand Rgroups, which may be identical or different, can be substituted or unsubstituted hydrocarbyl having 1 to 20 carbon atoms, R-Rgroups, which may be identical or different, can be selected from the group consisting of hydrogen, halogen or substituted or unsubstituted hydrocarbyl having 1 to 20 carbon atoms, R-Rgroups optionally contain one or more hetero-atoms replacing carbon, hydrogen atom or the both, said hetero-atom is selected from the group consisting of nitrogen, oxygen, sulfur, silicon, phosphorus and halogen atom, two or more of R-Rgroups can be linked to form saturated or unsaturated monocyclic or polycyclic ring A is a single bond or bivalent linking group with chain length between two free radicals being 1-10 atoms, wherein said bivalent linking group is selected from the group consisting of aliphatic, alicyclic and aromatic bivalent radicals, and can carry C-Clinear or branched substituents one or more of carbon atom and/or hydrogen atom on above-mentioned bivalent linking group and substituents can be replaced by a hetero-atom selected from the group consisting of nitrogen, oxygen, sulfur, silicon, phosphorus, and halogen atom, and two or more said substituents on the linking group as well as above-mentioned R-Rgroups can be linked to form saturated or unsaturated monocyclic or polycyclic ring.

Solid catalyst component for polymerization of olefins, catalyst comprising the same 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

A catalyst system for the (co)polymerization of propylene contains (A) a solid catalyst component comprising titanium, magnesium, halogen and a 1,3-diether; (B) an organic aluminum compound; and optionally (C) an organic silicon compound. In comparison with the prior art, stereospecificity of the polymer prepared by using the catalyst system of this invention evenl containing no external electron-donor is greater than 99%. Also, the activity of the catalyst system and hydrogen gas adjustability on the molecular weight of the polymer do not significantly decrease.

Catalyst system for the (co) polymerization of olefins

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Beijing, China

Juxiu Yang