| abstract |
Improved dispersants comprising adducts of (A) anhydrides or mono- or dicarboxylic acid of substituted polymer and (B) of an amido-amine characterized in that it is a reaction product of a non-compound saturated alpha, beta of formula (I) in which X represents sulfur or oxygen, Y represents -OR4, -SR4, or -NR4 (R5), and R1, R2, R3, R4 and R5 represent identical or different elements and represent hydrogen or a substituted or unsubstituted hydrocarbyl, and bis (para-amino cyclohexyl) methane or oligomers thereof. |