C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/585, 402/607
C08F 2/42 (2006.01) C08F 6/02 (2006.01) C08F 10/00 (2006.01) C08K 5/09 (2006.01)
Patent
CA 1165499
Abstract of the Disclosure The present invention relates to a solution polymerization process for the preparation of high molecular weight polymers of .alpha.-olefins selected from the group con- sisting of homopolymers of ethylene and copolymers of ethyl- ene and C3 - C12 .alpha.-olefins. The process comprises feeding monomer, coordination catalyst and inert hydrocarbon solvent to a reactor, polymerizing the monomer at a temperature in the range of, in particular, 105-320°C and a pressure of less than 25 MPa and deactivating the catalyst in the solution so obtained by admixing therewith a solution of a salt of an alkaline earth metal or zinc and an aliphatic monocarboxylic acid dissolved in hydrocarbon solvent. The hydrocarbon solvent is then separated from the resultant solution and a composition comprising nigh molecular weight polymer is recovered. Any catalyst residues remain with the polymer. In a preferred embodiment the catalyst contains vanadium. A particular salt is the salt of a C8 aliphatic acid, especially calcium 2-ethyl hexanoate. DC-0140
391971
Du Pont Canada Inc.
Mccallum Brooks & Co.
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