Patent ID: 7348367

Claim:
A dispersant of formula 1 T-X-(A) n -Y-Z 1 wherein T is branched alkyl; X is —CO—, —O—, —S—, —NR 3 — or polyether; R 3 is hydrogen, C 1-20 -alkyl or T-CO—; A is oxyalkylene carbonyl and/or oxyalkenylene carbonyl (POAC); Y is a divalent linkage selected from the residue of a diol, polyol, dicarboxylic acid, diisocyanate, and a direct bond; Z is a sulfonate, sulphate, phosphonate, or phosphate; n is from 2 to 100, including salts thereof, except where the dispersant is a phosphate ester of either isostearyl alcohol reacted with 10 moles of ε-caprolactone or isostearyl alcohol with 8 moles of ethyleneoxide and 15 moles of ε-caprolactone and further characterized in that the branched alkyl group, T, enhances the solubility of said dispersant in an organic media.