摘要 |
Copolymers, especially multi-block copolymer containing therein two or more segments or blocks differing in chemical or physical properties, are prepared by polymerizing propylene, 4-methyl- l-pentene, or other C4-8 alpha-olefin and one or more copolymerizable comonomers, especially ethylene in the presence of a composition comprising the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent. |
申请人 |
DOW GLOBAL TECHNOLOGIES INC.;ARRIOLA, DANIEL, J.;CARNAHAN, EDMUND, M.;DEVORE, DAVID, D.;HUSTAD, PHILLIP, D.;KUHLMAN, ROGER, L.;WENZEL, TIMOTHY, T. |
发明人 |
ARRIOLA, DANIEL, J.;CARNAHAN, EDMUND, M.;DEVORE, DAVID, D.;HUSTAD, PHILLIP, D.;KUHLMAN, ROGER, L.;WENZEL, TIMOTHY, T. |