Bimetallic cobalt-aluminum adduct catalyst system for preparing high trans-1,4-polybutadiene

摘要

The present invention relates to preparing high 1,4-trans-polybutadiene by polymerizing 1,3-butadiene or a butadiene derivative in a non-polar solvent in the presence of a catalyst system comprising a novel bimetallic cobalt-aluminum adduct, which makes it possible to prevent gel formation, control the molecular weight of the trans-polybutadiene and increase the trans content of the trans-polybutadiene. The catalyst system comprising the novel cobalt-aluminum adduct has a high oxidation state and structural stability, and the reactivity of the catalyst is controlled using novel activation systems comprising various allyloxy aluminum compounds.

主权项

1. A catalyst system for the preparation of 1,4-trans-polybutadiene, wherein the catalyst system comprises:
a bimetallic cobalt-aluminum adduct comprising a cobalt carboxylate and an organic allyloxy aluminum; and an activating agent comprising an organic allyloxy aluminum compound formed by reacting a phenol-based compound with an organoaluminum compound.