Importance

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Abstract

The invention provides a catalyst system comprising: A) cobalt II carboxylate, and B) at least one co-catalyst of the following Structure A wherein n is from 1 to 10, preferably from 1 to 6, and more preferably from 1 to 4; each R is independently an alkyl. The invention also provides a catalyst system comprising: A) cobalt II carboxylate; and B) the reaction product of at least the following components: i) trialkyl aluminum, ii) dialkyl aluminum chloride, iii) water, and wherein the molar ratio of aluminum to chloride (Al:Cl) is less than 1 (preferably 0.7 to 0.2), the molar ratio of water to aluminum (H₂O:Al) is from 0.5 to 0.92 (preferably from 0.55 to 0.75), and the molar ratio of trialkyl aluminum to dialkyl aluminum chloride from 0.5 to 5 (preferably from 1 to 5). The invention also provides a catalyst complex comprising the following: a) CoR′_(2-χ)Cl_(x), wherein x is from 0.01 to 1, preferably from 0.1 to 1; and R′ is a carboxylate; b) (n−m)R2R3AlCl.mR1₃Al, wherein n is from 1 to 12, preferably from 1 to 6; m is from 1 to 10, preferably from 1 to 4; and n is greater than, or equal to, m; and R1, R2 and R3 are each independently an alkyl; and c) n/k H₂O, wherein k is from 1.5 to 11, preferably from 1.5 to 4.

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First Claim