Lubricating oil composition and functionalised polymers...

C - Chemistry – Metallurgy – 10 – M

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C10M 143/00 (2006.01) C08F 8/34 (2006.01) C10M 143/10 (2006.01) C10M 143/12 (2006.01)

Patent

CA 2001210

Lubricating oil composition comprising a major proportion of a mineral lubricating oil and, as viscosity index improver, a hydrogenated block copolymer or olefin copolymer functionalised by the presence of carboxyl groups attached to the polymer chain by a sulphonamido linkage. As novel products, carboxyl functionalised hydrogenated polyalkadienes and star copolymers.

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