| abstract |
THE INVENTION RELATES TO COPOLYMERS DERIVED FROM (A) ONE OR MORE SELECTED MONOMERS AMONG C1-C24 ALKYL METHACRYLATES AND C1-C24 ALKYL ACRYLATES AND C1-C24 ALKYL ACRYLATES AND ( B) ONE OR MORE MONOMERS SELECTED AMONG THE C2-C6 HYDROXY-ALCOYL METHACRYLATES AND THE C2-C6 HYDROXY-ALCOYL ACRYLATES, IN WHICH THE NUMBER OF CARBON ATOMS INCLUDES IN THE AVERAGE APPROXIMATELY 7 AND APPROXIMATELY 12. THESE POLYMERS ARE USEFUL AS ADDITIVES FOR LUBRICATING OILS IN ORDER TO PROVIDE IMPROVED VISCOSITY INDEX, DISPERSABILITY AND LOW TEMPERATURE FLUID PROPERTIES, WITHOUT AFFECTING THEM FLUOROPOLYMER SEALING DEVICES |