High solids polyester polyols and their use for preparing...

Details High solids polyester polyols and their use for preparing... High solids polyester polyols and their use for preparing...

C - Chemistry, Metallurgy

08

G

402/150

C08G 63/123 (2006.01) C07C 69/75 (2006.01) C07C 69/80 (2006.01) C08G 63/20 (2006.01) C09D 175/06 (2006.01)

Patent

CA 1300302

Mo-2924 PU-212 HIGH SOLIDS POLYESTER POLYOLS AND THEIR USE FOR PREPARING POLYURETHANE COATINGS ABSTRACT OF THE DISCLOSURE The present invention is directed to a polyester polyol having a molecular weight between about 850 and 2000, a functionality of about 5 to 9 and an OH number of about 200 to 350, based on 100% solids, which is prepared by reacting a) an acid component based on at least one polyfunctional cycloaliphatic or aromatic carboxylic acid, anhydride or ester and optionally up to about 50 percent by weight of at least one acyclic, polyfunctional carboxylic acid and b) a hydroxyl component containing at least a portion of at least one polyol having a functionality of at least 3. The present invention is also directed to a process for preparing these polyester polyols by reacting the above components and is further directed to the use of these polyester polyols in combination with organic polyisocyanates for the production of polyurethanes, particularly polyurethane coatings. Mo-2924

557828

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