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    Multifunctional viscosity index improver derived from polyamine containing one primary amino group and at least one secondary amino group exhibiting improved low temperature viscometric properties
    18.
    发明授权
    Multifunctional viscosity index improver derived from polyamine containing one primary amino group and at least one secondary amino group exhibiting improved low temperature viscometric properties 失效
    衍生自含有一个伯氨基和至少一个表现出改进的低温粘度特性的至少一个仲氨基的多胺的多功能粘度指数改进剂

    公开(公告)号：US5210146A

    公开(公告)日：1993-05-11

    申请号：US908627

    申请日：1992-06-29

    申请人： Antonio Gutierrez ,  David Y. Chung

    发明人： Antonio Gutierrez ,  David Y. Chung

    IPC分类号： C10L1/236 ,  C10L1/24 ,  C10M143/02 ,  C10M149/06 ,  C10M151/02

    CPC分类号： C10L1/2364 ,  C10L1/2468 ,  C10M143/02 ,  C10M149/06 ,  C10M151/02 ,  C10M2205/00 ,  C10M2205/02 ,  C10M2205/022 ,  C10M2215/04 ,  C10M2215/042 ,  C10M2215/26 ,  C10M2217/024 ,  C10M2217/046 ,  C10M2217/06 ,  C10M2221/02 ,  C10M2221/043 ,  C10N2270/02

    摘要： Composition of matter useful as a multifunctional viscosity index improver for lubricating oils comprising reaction product of:(i) (a) copolymer of ethylene and at least one other alpha-olefin monomer, said copolymer comprising intramolecularly heterogeneous copolymer chains containing at least one crystallizable segment of methylene units and at least one low crystallinity ethylene-alpha-olefin copolymer segment, wherein said at least one crystallizable segment comprises at least about 10 weight percent of said copolymer chain and contains at least about 57 weight percent of said copolymer chain and contains at least about 57 weight percent ethylene, wherein said low crystalliity segment contains not greater, than about 53 weight percent ethylene, and wherein said copolymer has a molecular weight distribution characterized by at least one of a ratio of M.sub.w /M.sub.n of less than 2 and ratio of M.sub.z /M.sub.w of less than 1.8 and wherein at least two portions of an individual intramolecularly heterogeneous chain, each portion comprising at least 5 weight percent of said chain, differ in composition form one another by at least 7 weight percent ethylene, said copolymer grafted with (b) ethylenically monounsaturated carboxylic acid material having 1 to 2 carboxylic acid groups or anhydride group to form grafted ethylene copolymer; and(ii) at least one polyamine containing one primary amino group and from 1 to about 6 secondary amino groups.

    摘要翻译： 可用作润滑油的多功能粘度指数改进剂的物质的组成，其包含以下反应产物的反应产物：（i）（a）乙烯和至少一种其它α-烯烃单体的共聚物，所述共聚物包含分子内非均相共聚物链，其含有至少一个可结晶部分 的亚甲基单元和至少一种低结晶度乙烯-α-烯烃共聚物链段，其中所述至少一个可结晶链段包含至少约10重量％的所述共聚物链，并且含有至少约57重量％的所述共聚物链，并含有 至少约57重量％的乙烯，其中所述低结晶段含有不大于约53重量％的乙烯，并且其中所述共聚物的分子量分布的特征在于以下中的至少一个：＆lt;上＆gt; Mw /＆lt;上＆ 以及小于1.8的＆lt;上＆gt;＆gt;＆gt;＆lt;上拉和Mw的比率，并且其中至少两部分 每个部分包含至少5重量％的所述链，其组成彼此不同，至少7重量％的乙烯，所述共聚物接枝有（b）具有1至2个羧酸基团的烯键式单不饱和羧酸材料 或酸酐基以形成接枝乙烯共聚物; 和（ii）至少一种含有一个伯氨基和1至约6个仲氨基的多胺。