VISCOSITY INDEX IMPROVER WITH IMPROVED SHEAR-RESISTANCE AND SOLUBILITY AFTER SHEAR

摘要

The invention relates to a poly alkyl(meth)acrylate polymer comprising acombination ofpolybutadiene-based monomers having different average molecular weight,lubricant compositionscomprising the polymer, a method for manufacturing the polymer and the use ofthe polymer as aviscosity index improver in a lubricating oil composition.