C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 297/00 (2006.01) C08F 297/04 (2006.01) C10M 143/12 (2006.01)
Patent
CA 2157751
The present invention provides star polymers which are useful as viscosity index improvers in oil compositions formulated for high performance engines. the star polymers have triblock copolymer arms of hydrogenated polyisoprene-polybutadiene-polyisoprene, which provide excellent low temperature performance in lubricating oils, and can be used in the present of low pour point depressant concentrations.
Handlin Dale Lee Jr.
Rhodes Robert Barnett
Stevens Craig Aldred
Handlin Dale Lee Jr.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Rhodes Robert Barnett
Shell Internationale Research Maatschappij B.v.
Stevens Craig Aldred
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