Method and composition for inhibiting asphaltene deposition in a hydrocarbon mixture

摘要

A method of inhibiting the deposition of asphaltene in a mixture comprising hydrocarbons, the method comprising contacting the mixture with a composition which comprises at least one poly(hydroxycarboxylic acid) amide salt derivative.

主权项

1. A method of inhibiting the deposition of asphaltene in a mixture comprising hydrocarbons, the method comprising contacting the mixture with a composition which comprises at least one poly(hydroxycarboxylic acid) amide salt derivative having the chemical formula [Y—CO[O-A-CO]n—Zr—R+]mpXq−,
wherein Y is hydrogen or optionally substituted hydrocarbyl group, A is a divalent optionally substituted hydrocarbyl group, n is from 1 to 100, m is from 1 to 4, q is from 1 to 4 and p is an integer such that pq=m, Z is an optionally substituted divalent bridging group which is attached to the carbonyl group through a nitrogen atom, r is 0 or 1, R+ is an ammonium group and Xq− is an anion.