Polymeric viscosity index improver and oil composition...

Details Polymeric viscosity index improver and oil composition... Polymeric viscosity index improver and oil composition...

C - Chemistry, Metallurgy

10

M

253/128

C10M 107/00 (2006.01) C08F 297/04 (2006.01) C10M 119/02 (2006.01) C10M 143/12 (2006.01)

Patent

CA 1314279

K 4782 FF POLYMERIC VISCOSITY INDEX IMPROVER AND OIL COMPOSITION COMPRISING THE SAME Abstract of the Disclosure A triblock copolymer VI improver comprising two terminal hydrogenated polyisoprene blocks and a central polymeric block containing predominantly monoalkenyl aromatic hydrocarbon monomer units. Oil compositions comprising such triblock copolymer VI improvers exhibit a good balance between thickening efficiency and mechanical shear stability combined with relatively high HTHSR viscosities. PS09018

579843

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