AMINE-UNSATURATED ACID ADDUCTS AS ASPHALTENE DISPERSANTS IN CRUDE OIL.

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A composition comprising : (a) 0.001% to 5% of at least one compound of formula (I) or a zwitterionic form or salt thereof, wherein R1 is C10-C22 alkyl or aralkyl; R2 and R3 independently are hydrogen or C1-C4 alkyl; R4 is hydrogen, C1-C22 alkyl, C7-C22 aralkyl, or -CH(R5)CH(R6)COOH, wherein R5 and R6 independently a re hydrogen or C1-C4 alkyl; and (b) crude oil.