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    Ethylene copolymer viscosity index improver-dispersant additive useful in oil compositions
    7.
    发明授权
    Ethylene copolymer viscosity index improver-dispersant additive useful in oil compositions 失效
    用于油组合物的乙烯共聚物粘度指数改进剂 - 分散剂

    公开(公告)号：US4557847A

    公开(公告)日：1985-12-10

    申请号：US553410

    申请日：1983-11-21

    申请人： Antonio Gutierrez ,  Darrell W. Brownawell ,  Ricardo Bloch

    发明人： Antonio Gutierrez ,  Darrell W. Brownawell ,  Ricardo Bloch

    IPC分类号： C08F8/32 ,  C10L1/236 ,  C10M145/10 ,  C10M145/12

    CPC分类号： C10M145/10 ,  C08F8/32 ,  C10L1/2364 ,  C10M2205/00 ,  C10M2205/02 ,  C10M2207/125 ,  C10M2207/129 ,  C10M2209/08 ,  C10M2209/082 ,  C10M2209/086 ,  C10M2215/00 ,  C10M2215/04 ,  C10M2215/042 ,  C10M2215/08 ,  C10M2215/082 ,  C10M2215/26 ,  C10M2215/28 ,  C10M2217/046 ,  C10M2217/06

    摘要： Oil soluble viscosity index improving ethylene copolymers, such as copolymers of ethylene and propylene; and ethylene, propylene and diolefin; etc., are reacted or grafted with ethylenically unsaturated carboxylic acid moieties, preferably maleic anhydride moieties, and reacted with polyamines having two or more primary amine groups and a branched carboxylic acid component, preferably alkylene polyamine and branched monocarboxylic acid having 2 to 6 aliphatic hydrocarbon branches of 8 to 24 carbons each. Or the grafted ethylene copolymer can be reacted with already formed salts, and amides, etc. of said polyamine and branched acid component. These reactions can permit the incorporation of varnish inhibition and dispersancy into the ethylene copolymer while inhibiting cross-linking with resulting viscosity increase, haze or gelling. The aforesaid grafting reaction may be carried out thermally, or more preferably with a free radical initiator such as a peroxide in a mineral lubricating oil, in which case the branched acid component, preferably also acts to solubilize insoluble compounds formed by side reactions, such as maleic anhydride grafted oil molecules reacted with amine, to thereby inhibit haze formation, particularly when preparing oil concentrates of the V.I.-dispersant additive for later addition to lubricating oils.

    摘要翻译： 改善乙烯共聚物的油溶性粘度指数，如乙烯和丙烯的共聚物; 和乙烯，丙烯和二烯烃; 与烯属不饱和羧酸部分，优选马来酸酐部分反应或接枝，并与具有两个或多个伯胺基的多胺和支链羧酸组分反应，优选具有2至6个脂族烃的亚烷基多胺和支链单羧酸 分别为8至24个碳。 或者接枝的乙烯共聚物可以与所述多胺和支链酸组分的已经形成的盐和酰胺等反应。 这些反应可以允许在乙烯共聚物中引入清漆抑制和分散，同时抑制交联，从而导致粘度增加，雾度或胶凝。 上述接枝反应可以在矿物润滑油中热或更优选用自由基引发剂如过氧化物进行，在这种情况下，支链酸组分也优选溶解由副反应形成的不溶性化合物，例如 马来酸酐接枝的油分子与胺反应，从而抑制雾霾形成，特别是当制备用于随后添加到润滑油中的VI-分散剂添加剂的油浓缩物时。