Patent ID: 7169861

Claim:
A method for preparing a portion of sports equipment, comprising: preparing a composition comprising the reaction product of (a) (1) a urethane, or (2) a mixture comprising diol or polyol or mixtures thereof, along with diisocyanate or polyisocyanate, or mixtures thereof, or (3) a mixture of (1) and (2); and (b) a nitroso reaction product formed as a reaction product of a nitroso compound and a diisocyanate or a polyisocyanate, wherein the nitroso reaction product is characterized by a characteristic temperature (Td) at which it decomposes to generate the nitroso compound and diisocyanate or polyisocyanate; forming the composition into the portion of sports equipment; and inducing cross-linking or polymerization in the composition after the step of forming by adding thermal energy to the composition, such that a temperature of the composition is greater than the characteristic temperature (Td) of the nitroso reaction product, to create a cross-linked thermoset polyurethane.