C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 297/08 (2006.01) C08F 2/38 (2006.01) C08F 110/02 (2006.01) C08F 210/16 (2006.01) C08L 23/04 (2006.01)
Patent
CA 2608370
An improved two-step polymerization process wherein ethylene homopolymer is produced in a first reactor and ethylene copolymer having narrowed short-chain branching distribution is prepared in a second reactor. Narrowed short- chain branching distribution of the copolymer is achieved by including specific silane modifiers in the second reactor.
L'invention porte sur un procédé de polymérisation en deux étapes amélioré qui consiste à produire un homopolymère d'éthylène dans un premier réacteur et à préparer un copolymère d'éthylène possédant une distribution rétrécie des ramifications des chaînes courtes dans un second réacteur. On obtient un rétrécissement de la distribution des ramifications des chaînes courtes du copolymère en incluant des modificateurs silane spécifiques dans le second réacteur.
Equistar Chemicals Lp
Osler Hoskin & Harcourt Llp
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