Polyolefin block copolymers

Details Polyolefin block copolymers Polyolefin block copolymers

C - Chemistry, Metallurgy

08

F

C08F 210/06 (2006.01) C08F 4/642 (2006.01) C08F 297/06 (2006.01) C08F 297/08 (2006.01) C08L 23/10 (2006.01) C08L 53/00 (2006.01) C08F 4/659 (2006.01) C08F 210/16 (2006.01)

Patent

CA 2494076

A block copolymer of an .alpha.-olefin and a second olefin is disclosed. The block copolymers are not highly isotactic, but contain isotactic sequences and have a narrow molecular weight distribution. A process for the preparation of these block copolymers and blends of these copolymers are also disclosed.

La présente invention porte sur un copolymère bloc d'une .alpha.-oléfine et d'une seconde oléfine. Ces copolymères blocs ne sont pas hautement isotactiques mais contiennent des séquences isotactiques et présentent une répartition étroite du poids moléculaire. Cette invention concerne également un procédé de préparation de ces copolymères blocs ainsi que des mélanges de ces copolymères.

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