Patent ID: 8349980

Claim:
A polyol comprising a substituent of formula (I) attached via a carbon-carbon single bond to a saturated carbon atom in a fatty acid hydrocarbyl group; wherein R 1 and R 2 are esterified residues of aliphatic or cycloaliphatic diols; and wherein the polyol comprises: (i) from 0.37 to 0.44 units of formula (I) per fatty acid hydrocarbyl group, (ii) from 3 to 9 wt % of esterified residues of at least one C 4 -C 12 anhydride, C 4 -C 12 diacid or C 4 -C 12 lactone, not including units of formula (I) attached to a fatty acid hydrocarbyl group, and (iii) 15 to 31 wt % polymerized residues of at least one C 2 -C 8 aliphatic diol; and wherein the polyol has a hydroxyl number from 150 to 195 mg KOH/g.