首页>
外国专利>
Spherical catalyst, process for preparing a spherical polyethylene of ultra-high molecular weight
Spherical catalyst, process for preparing a spherical polyethylene of ultra-high molecular weight
展开▼
机译:球形催化剂,制备超高分子量球形聚乙烯的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A process for preparing a spherical polyethylene of ultra-high molecular weight.;A process for preparing a spherical support for the polymerization of alpha-olefins from an ammonium dawsonite which is spray-dried and formed into spherical particles which are then calcined and impregnated with titanium to produce a spherical catalyst of good mechanical strength is described. Also described is the polymerization process which, in the presence of the spherical catalyst, yields polyolefin particles which preserve the spherical characteristics of the support, with low flow angle and good bulk density, as well as the product polyethylene obtained from the process.
展开▼