| 摘要 |
New compositions, based on alkenylsuccinimides, are provided which impart useful dispersing, detergent, anti-rust and anti-foam properties when employed as an additive in a lubricating oil. The new compositions are alkenylsuccinimides obtained by condensing an alkenylsuccinic anhydride with at least one polyamine of the formula: <IMAGE> in which formula R'4 is a -r-O-r' radical, R'5 is one of the radicals -r-O-r'-NH2, -r'-NH2, or -r-OH, R'6 is one of the radicals -r-O-r-NH2, -r'-NH2, -r-OH, C1-C4-alkyl or phenyl, and r and r' have the definition given fully below using a molar ratio of polyamine to alkenylsuccinic anhydride of less than 1.
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