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    • 10. 发明公开
    • Method for preparing an imidized polymer
    • 赫尔斯特朗·赫斯特伦
    • EP1655311A1
    • 2006-05-10
    • EP04078032.2
    • 2004-11-04
    • DSM IP Assets B.V.
    • Meessen, PatricGeesink, Johannes Hendrik
    • C08F8/32C08F8/34C10M149/06C10M149/10C10M151/02
    • C10L1/2475C08F8/32C08F8/34C10L1/238C10L1/2383C10L1/2387C10M133/56C10M133/58C10M2205/022C10M2205/024C10M2205/026C10M2205/028C10M2205/08C10M2215/28C10M2215/30C10M2217/024C10M2217/028C10M2219/09C10M2221/02C10N2230/02C08F210/16
    • The invention relates to a process for preparing an imidized polymer in a mixing or kneading device, by a reaction of a mixture, comprising a polymer, comprising anhydride groups or derivatives thereof and an aromatic polyamine compound, wherein the reaction is carried out in the presence of an acid. With this process an imidized polymer can be obtained with a reduced amount of incomplete reacted anhydride groups with respect to the anhydride groups originally present in the polymer as well as a low amount of free and amid-bound aromatic polyamine. The invention further relates to a solid compound, and in particular a solid multifunctional viscosity modifier comprising a polymer comprising between 0.1 and 10 functional groups per 1000 C-atoms, the functional groups comprising aromatic amine based imide groups, wherein the ratio of imide groups with respect to the functional groups is more than 0.85, preferably more than 0.90 and most preferably more than 0.95 and to a lubricating oil, comprising the multifunctional viscosity modifier according to the invention, wherein the amount of low molecular weight aromatic polyamine in the oil is smaller than 10 ppm.
    • 本发明涉及一种在混合或捏合装置中通过包含含有酸酐基团或其衍生物和芳族多胺化合物的聚合物的混合物的反应制备酰亚胺化聚合物的方法,其中反应在存在下进行 的酸。 通过该方法,可以获得相对于最初存在于聚合物中的酸酐基团的少量不完全反应的酸酐基团以及少量游离和酰胺键合的芳族多胺的酰亚胺化聚合物。 本发明还涉及固体化合物,特别是固体多功能粘度调节剂,其包含每1000个C原子含有0.1至10个官能团的聚合物,所述官能团包括芳族胺基酰亚胺基团,其中酰亚胺基团与 相对于官能团,大于0.85,优选大于0.90,最优选大于0.95,并且包含根据本发明的多功能粘度调节剂的润滑油,其中油中的低分子量芳族多胺的量较小 超过10 ppm。