A grease composition containing: (a) an esterified polymer derived from monomers comprising: (i) a vinyl aromatic monomer; (ii) an unsaturated dicarboxylic acid anhydride or derivatives thereof; (b) a thickening agent; and (c) an oil of lubricating viscosity, wherein the esterified polymer contains titratable acid groups with a total acid number of at least about 4. The invention further relates to the process to make the composition and its use in grease to increase water resistance.
一种润滑脂组合物,含有:(a) 由单体衍生的酯化聚合物,单体包括:(i)
乙烯基芳香族单体;(ii) 不饱和二
羧酸酐或其衍
生物;(b)
增稠剂;以及 (c) 具有润滑粘度的润滑油,其中酯化聚合物含有可滴定酸基,总酸度至少约为 4。 本发明还涉及该组合物的制造工艺及其在润滑脂中的使用,以提高防
水性。