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    Dispersant, VI improver and antioxidant additive, and lubricating oil composition containing same
    28.
    发明授权
    Dispersant, VI improver and antioxidant additive, and lubricating oil composition containing same 失效
    分散剂，VI改进剂和抗氧化剂添加剂以及含有其的润滑油组合物

    公开(公告)号：US5160446A

    公开(公告)日：1992-11-03

    申请号：US704163

    申请日：1991-05-22

    申请人： Theodore E. Nalesnik ,  Maria M. Kapuscinski

    发明人： Theodore E. Nalesnik ,  Maria M. Kapuscinski

    IPC分类号： C08F8/30 ,  C10M149/06

    CPC分类号： C10M149/06 ,  C08F8/30 ,  C08F2800/10 ,  C10M2205/00 ,  C10M2205/02 ,  C10M2215/204 ,  C10M2217/024 ,  C10M2217/06 ,  C10N2270/02

    摘要： An additive reaction product prepared by the steps comprising reacting a copolymer selected from the group consisting of ethylene copolymers prepared from ethylene and at least one C.sub.3 -C.sub.10 alpha-monoolefin and, optionally, a polyene selected fron non-conjugated dienes and trienes comprising from about 15 to 80 mole percent of ethylene, from about 20 to 85 mole percent of said C.sub.3 -C.sub.10 alpha-monoolefin, and from about 0 to 15 mole percent of said polyene and block copolymers prepared from styrene and a diene monomer having from 4 to 6 carbon atoms, said copolymer being a number average molecular weight ranging from about 25,000 to 300,000, with at least one olefinic carboxylic acid acylating agent to form one or more acylating reaction intermediates characterized by having a carboxylic acid acylating function with their structure; reacting said reaction intermediate in with an unsaturated hydrocarbyl amine to form an imide reaction product; and reacting said imide reaction product with a nitroso compound, and a lubricating oil compositon containing same.