摘要 |
Copolymers, especially multi-block copolymer containing therein two or more segments or blocks, are prepared by polymerizing propylene, 4-methyl-1-pentene, or another C 4-8 ±-olefin 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 having increased incidence of regio-irregular branching compared to the polymer prepared by catalyst (A) under equivalent polymerization conditions, and
(C) a chain shuttling agent. |
申请人 |
DOW GLOBAL TECHNOLOGIES INC. |
发明人 |
ARRIOLA, DANIEL, J.;CARNAHAN, EDMUND, M.;DEVORE, DAVID, D.;HUSTAD, PHILLIP, D.;KUHLMAN, ROGER, L.;WENZEL, TIMOTHY, T. |