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    Ethylene copolymer viscosity index improver-dispersant additive useful in oil compositions
    12.
    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：US4517104A

    公开(公告)日：1985-05-14

    申请号：US260883

    申请日：1981-05-06

    申请人： Ricardo Bloch ,  Thomas J. McCrary, Jr. ,  Darrell W. Brownawell

    发明人： Ricardo Bloch ,  Thomas J. McCrary, Jr. ,  Darrell W. Brownawell

    IPC分类号： C08F255/02 ,  C08F8/00 ,  C08F8/32 ,  C08F8/46 ,  C08F255/00 ,  C10M143/02 ,  C10M159/12 ,  C10N20/04 ,  C10N30/02 ,  C10N30/04 ,  C10N40/25 ,  C10M1/32 ,  C10M1/20 ,  C10M1/40

    CPC分类号： C10M143/02 ,  C08F8/32 ,  C10M2203/10 ,  C10M2207/027 ,  C10M2215/04 ,  C10M2215/042 ,  C10M2215/26 ,  C10M2217/046 ,  C10M2217/06 ,  C10M2219/044 ,  C10M2221/04 ,  C10M2223/045 ,  C10M2227/06 ,  C10N2210/02 ,  C10N2270/02

    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 carboxylic acid component, preferably alkylene polyamine and alkenyl succinic anhydride such as polyisobutenyl succinic anhydride. Or the grafted ethylene copolymer can be reacted with already formed salts, amides, imides, etc. of said polyamine and acid component, preferably imides of alkylene polyamine and alkenyl succinic anhydride. 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 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. The invention also includes preferred methods of grafting maleic anhydride onto the ethylene copolymer by periodic or continuous addition of maleic anhydride and initiator charge, so as to maintain the maleic anhydride in solution during the grafting reaction.

    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羧酸组分，优选亚烷基多胺和链烯基琥珀酸酐如聚异丁烯基琥珀酸酐反应。 或者接枝的乙烯共聚物可以与所述多胺和酸组分的已经形成的盐，酰胺，酰亚胺等反应，优选亚烷基多胺和链烯基琥珀酸酐的酰亚胺。 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进行热，或更优选用自由基引发剂如过氧化物进行，在这种情况下，酸组分也优选溶解由副反应形成的不溶性化合物如马来酸 酸酐接枝的油分子与胺反应，从而抑制雾霾形成，特别是当制备用于后加入润滑油的VI-分散剂添加剂的油浓缩物时。 本发明还包括通过周期性或连续添加马来酸酐和引发剂电荷将马来酸酐接枝到乙烯共聚物上的优选方法，以便在接枝反应期间将马来酸酐保持在溶液中。