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    Multifunctional viscosity index improver derived from amido-amine and degraded ethylene copolymer exhibiting improved low temperature viscometric properties (PT-768)
    9.
    发明授权
    Multifunctional viscosity index improver derived from amido-amine and degraded ethylene copolymer exhibiting improved low temperature viscometric properties (PT-768) 失效
    衍生自酰胺 - 胺和降解的乙烯共聚物的多功能粘度指数改进剂具有改善的低温粘度特性（PT-768）

    公开(公告)号：US5290461A

    公开(公告)日：1994-03-01

    申请号：US848817

    申请日：1992-03-10

    申请人： David Y. Chung ,  Antonio Gutierrez ,  Mark J. Struglinski

    发明人： David Y. Chung ,  Antonio Gutierrez ,  Mark J. Struglinski

    IPC分类号： C10L1/16 ,  C08F8/30 ,  C08F8/34 ,  C08L51/06 ,  C10L1/22 ,  C10L1/224 ,  C10L1/2383 ,  C10L1/24 ,  C10L10/18 ,  C10M143/02 ,  C10M159/12 ,  C10M149/06

    CPC分类号： C10M159/12 ,  C08F8/30 ,  C08F8/34 ,  C10M143/02 ,  C08F2800/20 ,  C10M2205/00 ,  C10M2205/02 ,  C10M2205/022 ,  C10M2215/00 ,  C10M2215/04 ,  C10M2215/042 ,  C10M2215/08 ,  C10M2215/082 ,  C10M2215/22 ,  C10M2215/221 ,  C10M2215/225 ,  C10M2215/226 ,  C10M2215/26 ,  C10M2215/28 ,  C10M2215/30 ,  C10M2217/024 ,  C10M2217/046 ,  C10M2217/06 ,  C10M2219/00 ,  C10M2221/00 ,  C10M2227/00

    摘要： Composition of matter useful as multifunctional viscosity index improver for lubricating oil comprising reaction product of:(i) (a) degraded ethylene-alpha-olefin copolymer obtained by degrading 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 ethylene, wherein said low crystallinity 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 a 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 from one another by at least 7 weight percent ethylene; said degraded ethylene-alpha-olefin 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) amido-amine or thioamido-amine comprising reaction product of (a) polyamine, and (b) alpha, beta-unsaturated compound represented by the formula ##STR1## wherein X is oxygen or sulfur, Y is OR.sup.4, -SR.sup.4, or ##STR2## and R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are independently selected from hydrogen, hydrocarbyl, and substituted hydrocarbyl.

    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：（i）（a）通过降解乙烯和至少一种其它α-烯烃单体的共聚物而获得的降解的乙烯-α-烯烃共聚物，所述共聚物包括分子内 含有亚甲基单元的至少一个可结晶链段和至少一个低结晶度乙烯-α-烯烃共聚物链段的非均相共聚物链，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，并含有至少约57 重量百分比的乙烯，其中所述低结晶度链段含有不大于约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Mw / Mn小于2的比率和Mz / Mw小于1.8，并且其中单独的分子内异质的c的至少两个部分 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; 所述降解的乙烯-α-烯烃共聚物用（b）具有1至2个羧酸基团或酸酐基团的烯键式单不饱和羧酸材料接枝以形成接枝乙烯共聚物; 和（ii）包含（a）多胺和（b）由式（*化学结构*）表示的α，β-不饱和化合物的酰胺 - 胺或硫代酰氨基胺，其中X是氧或硫，Y是OR4 ，-SR 4或（*化学结构*），R 1，R 2，R 3，R 4和R 5独立地选自氢，烃基和取代的烃基。