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US 6,607,686 B2Granted
Thermosetting polyurethane material for a golf ball
AssigneeCallaway Golf Company
InventorPijush K. Dewanjee
Life of this patent
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Abstract
A prepolymer blend for a thermosetting polyurethane material that allows for control of the reaction time is disclosed herein. The prepolymer blend is preferably composed of a polyurethane prepolymer and dimethyl methylphosphonate. The thermosetting polyurethane is preferably utilized as a cover for a golf ball. The cover is preferably formed over a core and boundary layer.
Claims4
A method for forming a cover for a golf ball, the method comprising:
- blending a mixture of a polyurethane prepolymer and dimethyl methylphosphonate to create a prepolymer blend;
- mixing the prepolymer blend with a curing agent in a mixing chamber to create pro-polyurethane mixture;
- dispensing the pro-polyurethane mixture into a first hemispherical cavity and a second hemispherical cavity;
- placing a golf ball precursor product into the first hemispherical cavity with the pro-polyurethane mixture therein;
- mating the first hemispherical cavity with the second hemispherical cavity;
- and
- curing the pro-polyurethane mixture to create a polyurethane cover on the golf ball precursor product.
4 more elements
Dependencies are inferred from the claim text.