Patent ID: 8044234

Claim:
A branched isocyanate functional compound prepared by reacting at least two different aliphatic polyester macromers of the formula HO—(R-A) n -R—OH wherein A is an acid selected from the group consisting of sebacic acid, azelaic acid, suberic acid, pimelic acid, adipic acid, glutaric acid, succinic acid, malonic acid, oxalic acid and combinations thereof; R can be the same or different at each occurrence and comprises a dihydroxy compound selected from the group consisting of polyethylene oxides, polypropylene oxides, block or random copolymers of polyethylene oxides and polypropylene oxides, and polyethylene glycols having a molecular weight less than 1,000; and n is 1 to 10, with at least one diisocyanate in a single reaction to provide a mixture of diisocyanate-endcapped macromers; and reacting the mixture of diisocyanate-endcapped macromers with a multifunctional compound in a single reaction to provide a mixture of branched isocyanate functional compounds.