| 摘要 |
According to the present invention, improved dispersants are provided which comp rise adducts of (A) polymer-substituted mono- and dicarboxylic acid or anhydrides and (B) an amido-amine characterized b y being a reaction product of an alpha, bata- unsaturated compound of formula (I), wherein X is sulfur or oxygen, Y is OR4, -SR4, or -NR4 (R5), and R1, R2, R3, R4 and R5 are the same or different and are hydrogen or substituted or unsubstituted hydro carbyl, and bis(para-amino cyclohexyl) methane or oligomers thereof.
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