Polymer composition useful as viscosity index improver

Details Polymer composition useful as viscosity index improver Polymer composition useful as viscosity index improver

C - Chemistry, Metallurgy

08

L

253/114, 400/490

C08L 23/02 (2006.01) C08F 2/44 (2006.01) C08L 33/06 (2006.01) C08L 71/02 (2006.01) C10M 157/00 (2006.01) C10M 157/04 (2006.01) C10M 165/00 (2006.01)

Patent

CA 1307364

TITLE OF INVENTION POLYMER COMPOSITION USEFUL AS VISCOSITY INDEX IMPROVER ABSTRACT OF THE DISCLOSURE A polymer composition or concentrate comprising : (A) an olefinic copolymer, (B) a copolymer of olefins with a (meth)acrylate, (C) a poly(meth)acrylate, and (D) a surfactant, which is poor solvent for both the components (A) and (C), and acts as a solubilizer or phase-stabilizer for the components (A) and (C), in combination with surface activity of the component (B) as a phase-stabilizer has lower viscosity even at high polymer content and is useful as a lubricating oil additive for improving the viscosity index.

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