Patent ID: 6359022
Filing Date: 2002-03-19
Classification: C08G,C08J

Abstract:
A polyol based resin blend comprising:(a) a polyol component comprising: (I) from about 20 to about 100 percent by weight of an aromatic polyester polyol reaction product tormed by inter-esterification of: (i) from about 10 to about 70 percent by weight of a phthalic acid based material; (ii) from about 20 to about 60 percent by weight of a hydroxylated material having a functionality of at least 2; and (iii) from about 1 to about 40 percent by weight of a hydrophobic material having: (1) from one to six radicals, the radicals being selected from the group consisting of carboxylic acid groups, carboxylic acid ester groups, hydroxyl groups, and mixtures thereof; (2) hydrocarbon groups totaling at least 4 carbon atoms for each radical present; and (3) an average molecular weight of from about 100 to about 1000; wherein the hydrophobic material is substantially free of diner acid; and (II) from 0 to about 80 percent by weight of a polyether polyol; and (b) from about 10 to about 35 parts per hundred parts of polyol of a C4-C7 hydrocarbon blowing agent.