Lubricating oil compositions
    22.
    发明授权
    Lubricating oil compositions 失效
    润滑油组成

    公开(公告)号:US3947368A

    公开(公告)日:1976-03-30

    申请号:US118989

    申请日:1971-02-25

    摘要: Lubricating oil compositions having substantially reduced pour points are prepared by incorporating an effective pour depressant amount of an oil-soluble copolymer of ethylene and a vinyl ester of a lower saturated monobasic aliphatic carboxylic acid in a paraffinic, waxy-type, residual lubricating oil base stock. The copolymers, in which the lower saturated monobasic carboxylic component of the ester has from 2 to 6 carbon atoms, have molecular weights of about 16,000 to about 31,000 and which contain about 17 to about 42 weight percent of the vinyl ester, can be added to the lubricating base stock in the form of an emulsion, as a hydrocarbon solution or in any other convenient manner.

    摘要翻译: 通过将有效的降压剂量的乙烯和低级饱和一元脂肪族羧酸的乙烯基酯的油溶性共聚物在石蜡,蜡状残余润滑油基础油中加入,制备具有显着降低的倾点的润滑油组合物 。 其中酯的低级饱和一元羧酸成分具有2-6个碳原子的共聚物具有约16,000至约31,000的分子量和含有约17至约42重量%的乙烯基酯的共聚物可以加入到 以乳液形式的润滑基础油料,作为烃溶液或以任何其它方便的方式。