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    • 90. 发明公开
    • 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
    • 多功能粘度指数改进剂,由具有初级和至少一个仲氨基和具有在低温下改进的粘度性能的多胺制备。
    • EP0400870A1
    • 1990-12-05
    • EP90305567.1
    • 1990-05-22
    • EXXON CHEMICAL PATENTS INC.
    • Gutierrez, AntonioChung, David Yen-Lung
    • C10M143/02C10M149/06C10M151/02C10M159/12
    • C10L1/2364C10L1/2468C10M143/00C10M143/02C10M149/06C10M151/02C10M2205/00C10M2205/02C10M2205/022C10M2215/04C10M2215/042C10M2215/26C10M2217/024C10M2217/046C10M2217/06C10M2221/02C10M2221/043C10N2270/02
    • 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 W / M n of less than 2 and a ratio of M z / M of less than 1.8 and wherein at least two portions of an individual intramolecularly heterogeneous chain, each portion comprisig at least 5 weight percent of said chain, differ incomposition form one antoher 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.
    • 物的组合物作为多官能粘度指数改进剂对于润滑油包括反应产物有用:(ⅰ)(a)乙烯的共聚物和至少一种其它α-烯烃单体,所述共聚物包含分子内的异构共聚物链含有至少一个可结晶段 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,worin所述至少一个可结晶段包括至少约10重量%的所述共聚物链的并含有至少约57重量%的所述共聚物链的,并且包含在 至少约57%(重量)乙烯,worin所述低crystalliity段包含不超过约53重量%的乙烯时,和worin所述共聚物具有小于2和Mw / Mn比的比率中的至少一种为特征的分子量分布 小于1.8的Mz / Mw和worin单个分子内heterog的至少两个部分的 eneous链,comprisig至少5重量%的所述链,差动incomposition形成一个antoher由至少7%(重量)乙烯的各部分,所述共聚物接枝有具有1-2个羧酸基团或酸酐基团(b)烯不饱和羧酸材料 以形成接枝的乙烯共聚物; 和(ii)至少一种聚胺含有1至约6个仲氨基的一个伯氨基和。 乙