05242986 is referenced by 15 patents and cites 11 patents.

This is a process for the partial hydrogenation of conjugated diolefin polymers which comprises polymerizing at least one conjugated diolefin with an organo alkali metal polymerization initiator in a suitable solvent thereby creating a living polymer comprising (1) ethylenic unsaturation between backbone carbons wherein at least one of the doubly bound backbone carbons is substituted and (2) ethylenic unsaturation which is not between doubly bound backbone carbons wherein at least one is substituted, terminating the polymerization, and effecting selective hydrogenation of the ethylenic unsaturation in the conjugated diolefin units of the terminated polymer which is not between doubly bound backbone carbons wherein at least one is substituted, by contacting the polymer with hydrogen in the presence of no more than 0.02 mM of catalyst per gram of polymer of a bis(cyclopentadienyl)titanium catalyst.

Title
Selective partial hydrogenation of conjugated diolefin polymers
Application Number
7/927904
Publication Number
5242986
Application Date
August 10, 1992
Publication Date
September 7, 1993
Inventor
Ronald J Hoxmeier
Houston
TX, US
Linda R Chamberlain
Richmond
TX, US
Carma J Gibler
Houston
TX, US
Agent
Donald F Haas
Assignee
Shell Oil Company
TX, US
IPC
C08F 8/04
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