Production of polymerization catalyst based on porous cement concrete material (I) comprises applying metallocene derivatives to (I) as support. An independent claim is also included for catalysts with a particle size of 1 mu m to 10 mm, preferably 45 mu m to 2 mm, especially 45-800 mu m...
CATALYST COMPOUNDS, CATALYST SYSTEMS AND THEIR USE IN A POLYMERIZATION PROCESS 来自 Google Patents 喜欢 0 阅读量: 13 申请(专利)号: PCT/US2001/010070 申请日期: Mar 29, 2001 公开/公告号: WO 2001083569 A1 申请(专利权)人: 发明人:MW Holtcamp,TT Wenzel,GT Whiteker 国省代号: WO ...
Process for the preparation of a catalyst and catalyst used in olefin polymerization When reacting the reaction product of silicon dioxide and/or a metal oxide and a Grignard compound with a soluble titanium compound, there is obtained a catalyst for the polymerization of 1-olefins, which gives ...
The initiators are used to prepare polydienes of high stereoregularity by reacting with a diene, and the polydiene is used to prepare a three-block or star copolymer by reacting with an anionically polymerizable monomer.Pierre SigwaltPatrick Guyot...
When used in ethylene polymerization, the catalyst system exhibits very high polymerization activity, and the resultant polymer particles exhibit better particle morphology and higher apperant density. 展开 收藏 引用 批量引用 报错 分享 文库来源 其他来源 免费下载 求助全文 CATALYST SYSTEM FOR USE IN ...
PROCESS FOR THE PREPARATION OF SOLID HYDROCARBON ASSETS USED FOR POLYMERIZATION OLEFINS. THIS METHOD IS TO FORM A POWDER MASS MIXTURE OF A TRANSITION METAL... C. Brun,Auguste Chaux,R. Pelletier 被引量: 0发表: 1983年 SEAr Mechanism of the Products of 1,2-Dimethoxybenzene and a Captodative Ol...
The catalysts may be preformed and then used to polymerize olefins, diolefins and/or acetylenically unsaturated compounds either alone or in combination with each other or with other monomers or the catalysts may be formed in situ during polymerization by adding the separate components to the ...
Process for the preparation of a catalyst and catalyst used in olefin polymerization When reacting the reaction product of silicon dioxide and/or a metal oxide and a Grignard compound with a soluble titanium compound, there is obtained a catalyst for the polymerization of 1-olefins, which gives ...
The solid titanium complex catalyst for polymerization and copolymerization of ethylene according to present invention exhibits high catalytic activity and can be advantageously used in the polymerization and copolymerization of ethylene to produce polymers of high bulk density, narrow particle size ...
A catalytic ingredient for use in the polymerization of olefins comprises a carrier comprising a magnesium compound precipitated from solution and a catalytic component supported on the carrier and which is a titanium halide, vanadyl halide or vanadium halide, the catalyst being obtained by a process...