China Petroleum & Chemical Corporation

Beijing Lihe Technology Ltd

Beijing Research Institute of Chemical Industry

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

Zhiwu Wang

Hao Chen

Junwei Zhang

Tianyi Li

Zhong Tan

Huashu Li

Qingli Ma

Jinsong Dai

Shuhang Li

Yu Wang

Yong Ying Gao

Peng Kou

Haixiang Cui

Liang Pan

Xingbo Li

Zhengyang Guo

Le Hu

Wei Chen

Wei Bai

Jun Xiao

Qi Chen

Xianzhi Xia

Tianyi Zhang

Ling Yang

Xinsheng Wang

Wenjie Jiao

Shubin Li

Hongbin Du

Li'an Yan

Yuanyi Yang

Zhenhu Li

Xinghuo Wang

Huijuan Xu

Fengyao Lei

Lige Li

Xuan Zheng

Kai Zhang

Provided in the present invention is a solid catalyst component for use in olefin polymerisation, comprising Mg, Ti, a halogen, and at least one electron donor, the electron donor being a 2-substituted amino-phenyl ester compound selected from general formula (I). Also disclosed in the present invention are a catalyst comprising the solid catalyst component, and an application for the catalyst in olefin polymerisation, particularly in propylene polymerization. Also provided in the present invention is a high activity catalyst, said catalyst being able to obtain polypropylene of high isotacticity and wide molecular weight distribution, and not requiring an external electron donor to obtain high isotacticity polypropylene; during polymerization, Al/Ti and Al/Si are reduced, the polymerization time is lengthened, and high activity can still be maintained, suitable for producing low-ash polymers.

Solid catalyst component for use in olefin polymerisation, catalyst, and application thereof

Provided is an alkoxy magnesium supported olefin polymerization catalyst component, comprising the reaction products of the following components: at least one alkoxy magnesium compound of Mg(OR1')N(OR2&#x2032;)2-N, at least one titanium compound of general formula Ti(OR)nX4-n, at least one ortho-phenylene diester electron donor compound a, and at least one diether electron donor compound b, wherein the molar ratio of a to b is 0.05 to 20. The catalyst component has an ultrahigh polymerization activity when used for olefin polymerization, and does not require the use of an external electron donor, but can also obtain a polymer with a high isotacticity, and the resulting polymer has a relatively wide molecular weight distribution and a relatively low ash content.

Alkoxy magnesium supported olefin polymerization catalyst component, catalyst and application thereof

Provided is a solid catalyst component for olefin polymerization, which comprises Mg, Ti, a halogen and an electron donor. The electron donor is selected from at least one of ring-substituted ether-acid ester compounds of the general formula (I). Also provided are a catalyst containing the solid catalyst component and the application of the catalyst in reactions of olefin polymerization, particularly in the reaction of propylene polymerization.

Catalyst component for olefin polymerization and application thereof

The invention relates to a catalyst component for olefin (co)polymerization, to preparation thereof, to a catalyst comprising the same, and to use thereof in olefin (co)polymerization. The catalyst component of the invention comprises magnesium, titanium, halogen, inner electron donor compound, and alkoxy group derived from a surface modifier, wherein the content of the alkoxy group derived from the surface modifier is in a range of from 0.01 to 3 percent by weight, based on the weight of the catalyst component.

Catalyst component for olefin (co)polymerization, preparation thereof, a catalyst comprising the same and use thereof

The present invention provides a process for preparing particles of magnesium halide/alcohol adduct, said process comprising: preparing a melt of magnesium halide/alcohol adduct in an inert liquid medium, dispersing the mixture of the inert liquid medium and the melt of the magnesium halide/alcohol adduct by high-speed rotation under a high-gravity field to obtain a dispersion of magnesium halide/alcohol adduct melt; and the cooling the dispersion of the melt to form the particles of magnesium halide/alcohol adduct. The present invention further relates to the particles of magnesium halide/alcohol adduct prepared by the process of the present invention and the use thereof in the preparation of catalysts for olefin polymerization.

Magnesium halide/alcohol adduct, its preparation and use

The present invention provides a catalyst component used for homopolymerization or co-polymerization of ethylene, comprising at least one suitable electron donor compound supported on a composition containing magnesium and titanium, wherein the electron donor compound is selected from the group consisting of aliphatic ethers, alicyclic ethers, aromatic ethers, aliphatic ketones and alicyclic ketones, and wherein the composition containing magnesium and titanium is prepared by dissolving a magnesium compound into a solvent system to form a homogeneous solution and then contacting the solution with a titanium compound in the presence of a precipitation aid to precipitate the composition. The present invention also relates to a method for the preparation of said catalyst component and a catalyst comprising thereof, and to use of the catalyst in homopolymerization of ethylene or co-polymerization of ethylene with at least one C&#x2013;C&#x3b1;-olefin.

Solid catalyst component for polymerization of ethylene, preparation thereof and a catalyst containing the same

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Beijing, China

Zhiwu Wang