Invention Grant
US07928172B2 Catalyst activators, processes for making same, and use thereof in catalysts and polymerization of olefins 有权
催化剂活化剂,其制备方法及其在催化剂和烯烃聚合中的应用

Catalyst activators, processes for making same, and use thereof in catalysts and polymerization of olefins
Abstract:
Compositions useful for activating catalysts for olefin polymerization are-provided. The compositions are derived from at least: a) compound derived from at least (i) carrier having at least one pair of hydrogen bonded hydroxyl groups, (ii) organoaluminum compound, and (iii) Lewis base, such that each of a majority of aluminum atoms in the organoaluminum compound forms chemical bonds with at least two oxygen atoms from the at least one pair of hydrogen bonded hydroxyl groups; and b) Bronsted acid, wherein the molar ratio of the Bronsted acid to the organoaluminum compound is less than or equal to about 2:1.
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