HIGH FUNCTIONALITY AROMATIC POLYESTERS, POLYOL BLENDS COMPRISING THE SAME AND RESULTANT PRODUCTS THEREFROM

摘要

The present invention discloses aromatic polyester polyols suitable for blending with other polyols or other materials mutually compatible with the polyester polyols to achieve polyurethane and polyisocyanurate products. In particular the present invention discloses polyester polyols comprising the reaction of: A) an aromatic component comprising 80 mole percent or greater of terephthalic acid; B) a polyether polyol having a nominal functionality greater than 2 and less than or equal to 4, a molecular weight of 250 to 1000 and has a polyoxypropylene content of at least 70% by weight of the polyol; and C) a glycol other than B having a molecular weight from 60 to 250; wherein A, B, and C are present in the reaction on a percent weight bases of 20 to 60 weight percent A); 15 to 70 weight percent of B); and 10 to 50 weight percent of C).