comb polymer based on grafted polyalkyl (meth) acrylate, copolymer based on polyalkyl (meth) acrylate and its use, additive composition, method of reducing the friction coefficient of a lubricating oil composition, lubricating oil composition and method of friction reduction in an automotive vehicle

摘要

the present invention is directed to selected comb polymers comprising specific amounts of macromonomers and imide functionalization, their preparation, lubricating compositions comprising 5 of these comb polymers and their use to reduce wear and fuel consumption of lubricating compositions, especially engine oil (oil).