Oil soluble ester pour point depressant additive for lubricants
    15.
    发明授权
    Oil soluble ester pour point depressant additive for lubricants 失效
    用于润滑剂的油溶性酯倾点添加剂

    公开(公告)号:US4514314A

    公开(公告)日:1985-04-30

    申请号:US565161

    申请日:1983-12-23

    Applicant: Albert Rossi

    Inventor: Albert Rossi

    Abstract: An oil soluble copolymer, useful as a pour point depressant for lubricating oils, is a C.sub.22 -C.sub.40, preferably C.sub.32 -C.sub.36, branched alkyl ester based polymer. These alkyl esters of copolymers are essentially free of olefinic unsaturation and have a number average molecular weight of from 1,000 to 40,000, preferably 2,000 to 15,000, optimally 2,000 to 8,000.These alkyl ester copolymers are usefully admixed with lubricants in an amount of from 0.01 to 2 wt. % based on the total weight of the admixture and are of the class consisting of a C.sub.22 -C.sub.40 branched alkyl ester of a copolymer of a C.sub.2 to C.sub.20 1-olefin and maleic anhydride and di-(2-[C.sub.22 to C.sub.40 ] alkyl) fumarate-vinyl C.sub.1 -C.sub.4 alkylate e.g. acetate copolymer.

    Abstract translation: 可用作润滑油的倾点降低剂的油溶性共聚物是C 22 -C 40,优选C 32 -C 36支链烷基酯基聚合物。 这些共聚物烷基酯基本上不含烯属不饱和键,其数均分子量为1,000至40,000,优选为2,000至15,000,最佳为2,000至8,000。 这些烷基酯共聚物可有效地与润滑剂混合,其量为0.01至2wt。 基于混合物的总重量的%,并且是由C 2 -C 20 1-烯烃和马来酸酐的共聚物的C 22 -C 40支链烷基酯和二 - (2- [C 22 -C 40]烷基) 富马酸盐 - 乙烯基C1-C4烷基化物,例如 乙酸酯共聚物。

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