Patent ID: 7335718

Claim:
An oligomer comprising (1) a backbone comprising a polyester, said polyester being prepared by reacting at least the following reactants: (a) one or more polyalkylesters; (b) one or more polyols; and (c) optionally, one or more components selected from the group consisting of polycarboxylic acids, polycarboxylic anhydrides, and hydroxyl-functional monocarboxylic acids; (2) one or more curable groups attached to said backbone; wherein said polyester has a number average molecular weight below 5,000 g/mol, wherein at least 50 wt % of said reactants is said one or more polyalkylesters, said 50 wt % being relative to the combined weight of said polycarboxylic acids, said polycarboxylic acid anhydrides, said hydroxy-functional monocarboxylic acids, and said polyalkylesters, and wherein said composition, after cure, exhibits a tensile modulus of at least 1000 MPa and an elongation at break of at least 40% at 23° C.