C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
252/117, 402/223
C08F 10/00 (2006.01) C08F 4/52 (2006.01) C08F 4/64 (2006.01)
Patent
CA 1227182
ABSTRACT OF DISCLOSURE A aliphatic hydrocarbon soluble mixed aluminum hydrocarbyl-Lewis base co-catalyst composition comprising (i) at least two different classes of aluminum hydrocarbyls the first being an aluminum hydrocarbyl halide, the second being an aluminum hydrocarbyl hydride and/or aluminum trialkyl and (ii) at least one Lewis base represented by the formula: a) Image b) Image c) Image d) Image wherein each Y can be -OR', -N(R)2 and R' with the proviso that at least two be -OR' or -N(R)2, z is an alkylene radical forming a 5 or 6 membered ring with the carbonyldioxy group or Z is alkyl substituted alkylene group wherein the alkyl radical can have from 1 to 8 carbon atoms, R is an aryl. allyl or alkyl group having from 1 to 20 carbon atoms and R' is an alkyl, cycloalkyl, aryl or aralkyl radical having from 1 to 20 carbon atoms. The co-catatyst is employed with a titanium halide catalyst for the polymerization of olefins to obtain an advantageous balance of catalytic activity and polymer product stereoregularity.
470951
Huff Terrence
Poirot Eugene E.
Borden Ladner Gervais Llp
Exxon Research And Engineering Company
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