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US 7,169,861 B2Granted
Method for manufacturing sporting equipment incorporating urethane/nitroso composition
AssigneeTaylor Made Golf Company, Inc.
InventorsHyun Jin Kim, Hong Guk Jeon
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Abstract
Sports equipment incorporate thermoplastic compositions including urethane and a nitroso reaction product of a nitroso compound and a diisocyanate or polyisocyanate. The invention on allows for the processing advantages of a thermoplastic urethane with the superior performance characteristics of a cross-linked polyurethane.
Claims12
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.
6 more elements
Dependencies are inferred from the claim text.