Blends of {HEAD ~ polyamide polyols} and {TAIL ~ urethane diols} are prepared by reacting alkyl esters of polybasic acids with excess alkanolamine to form the polyamide polyol of the polybasic acid and alkyl alcohol 
Blends of { HEAD ~ polyamide polyols } and { TAIL ~ urethane diols } are prepared by reacting alkyl esters of polybasic acids with excess alkanolamine to form the polyamide polyol of the polybasic acid and alkyl alcohol
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH