Polymerization catalyst system using di-sec-butyldimethoxysilane for preparation of polypropylene
Номер патента: EP1639023A2
Опубликовано: 29-03-2006
Автор(ы): Joseph Thorman
Принадлежит: Fina Technology Inc
Опубликовано: 29-03-2006
Автор(ы): Joseph Thorman
Принадлежит: Fina Technology Inc
Реферат: It has been discovered that using di-sec-butyldialkoxysilanes, such as di-sec-butyldimethoxysilane (DSBDMS), as external electron donors for Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films with improved properties and processing. The catalyst systems of the invention provide high activity, high bulk density, moderate hydrogen response, moderate donor response and high polydispersity (MWD). Suitable di-sec-butyldialkoxysilanes have the formula (<SUP>s</SUP>Bu)<SUB>2</SUB>Si(OR'')<SUB>2</SUB>, where R'' is independently a straight or branched alkyl group of 1-5 carbon atoms.
Polymerization catalyst system using di-sec-butyldimethoxysilane for preparation of polypropylene
Номер патента: KR20060029240A. Автор: 조셉 써만. Владелец: 피나 테크놀러지, 인코포레이티드. Дата публикации: 2006-04-05.