Preferably, the saturated polyester polyols comprising {TAIL ~ part} A are characterized by {HEAD ~ an equivalent weight} of about 225 to about 600, an acid number not greater than about 4 and a hydroxyl number of about 104 to about 220 
Preferably , the saturated polyester polyols comprising { TAIL ~ part } A are characterized by { HEAD ~ an equivalent weight } of about 225 to about 600 , an acid number not greater than about 4 and a hydroxyl number of about 104 to about 220
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH