C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 4/6592 (2006.01) C08F 2/34 (2006.01) C08F 210/16 (2006.01)
Patent
CA 2675112
The invention generally provides for methods for controlling polymer properties. In particular, invention provides for methods for controlling the comonomer composition distribution of polyolefins such as ethylene alpha-olefin copolymers by altering at least one or more of the following parameters: the molar ratio of hydrogen to ethylene, the molar ratio of comonomer to ethylene, the partial pressure of ethylene, and the reactor temperature without substantially changing the density and/or the melt index of the copolymer.
L'invention propose en général des procédés pour réguler des propriétés de polymère. L'invention propose en particulier des procédés pour réguler la répartition dans une composition comonomère de polyoléfines telles que des copolymères d'éthylène alpha-oléfine en changeant au moins un ou plusieurs des paramètres suivants : le rapport molaire hydrogène/éthylène, le rapport molaire comonomère/éthylène, la pression partielle de l'éthylène et la température de réacteur, sans changer sensiblement la densité et/ou l'indice de fusion du copolymère.
Farley James M.
Kolb Rainer
Ossowski Mark P.
Szul John F.
Borden Ladner Gervais Llp
Univation Technologies Llc
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