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

摘要

The invention relates to a poly alkyl(meth)acrylate polymer comprising a combination of polybutadiene-based monomers having different average molecular weight, lubricant compositions comprising the polymer, a method for manufacturing the polymer and the use of the polymer as a viscosity index improver in a lubricating oil composition.