A Bis(phenoxy‐imine)Zr Complex for Ultrahigh‐Molecular‐Weight Amorphous Ethylene/Propylene Copolymer期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

A Bis(phenoxy‐imine)Zr Complex for Ultrahigh‐Molecular‐Weight Amorphous Ethylene/Propylene Copolymer

Authors:	Seiichi Ishii Junji Saito Sadahiko Matsuura Yasuhiko Suzuki Rieko Furuyama Makoto Mitani Takashi Nakano Norio Kashiwa Terunori Fujita

Abstract:	A new bis(phenoxy‐imine)Zr complex has been developed. This complex in conjunction with ⁱBu₃Al/Ph₃CB(C₆F₅)₄ at 70°C produces ultrahigh‐molecular‐weight amorphous ethylene/propylene copolymer with a weight‐average molecular weight of 10 200 000 g/mol versus polystyrene standards, which represents the highest molecular weight known for linear, synthetic copolymers to date.

Keywords:	catalysts copolymerization elastomers polyolefins Ziegler‐Natta polymerization