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US 7,888,449 B2Granted
Polyurethane compositions for golf balls
AssigneeAcushnet Company
InventorsShenshen Wu, Kelly J. Gasper, Constantine A. Kondos, Murali Rajagopalan
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Abstract
A method of forming golf balls with at least a portion formed from polyurethane and polyurea compositions employing a curative blend that includes a pigment, a curing agent, and a compatible freezing point depressing agent so that the curative blend has a lower freezing point than the curing agent by itself and the blend does not lose pigment dispersion upon solidification and subsequent thawing.
Claims18
A method of forming a golf ball comprising the steps of:
- providing a curative blend formed from a saturated curing agent, a compatible saturated freezing point depressing agent, and a grind vehicle comprising a pigment, wherein the saturated curing agent has a first freezing point and the curative blend has a second freezing point less than the first freezing point;
- forming a composition comprising:
- a prepolymer formed from the reaction product of a saturated isocyanate and a saturated polyol or saturated polyamine;
- and
- the curative blend;
- and
- forming at least a portion of the golf ball from the composition.
4 more elements
A method of forming a golf ball comprising:
- providing a core;
- forming a composition comprising:
- a saturated prepolymer formed from the reaction product of a saturated isocyanate and a saturated polyol, saturated polyamine, or a mixture thereof;
- and
- a curative blend formed from a saturated curing agent, a compatible saturated freezing point depressing agent present in an amount of about 8 percent or greater by weight of the curative blend, and a pigment dispersed in a grind vehicle;
- and
- forming a layer from the composition about the core.
4 more elements
A method of forming a golf ball comprising the steps of:
- providing a core;
- providing a curative blend formed from a curing agent, a compatible freezing point depressing agent, and a pigment dispersed in a grind vehicle;
- forming a composition comprising:
- a prepolymer formed from the reaction product of a isocyanate and a polyol or polyamine;
- and
- the curative blend;
- and
- casting a cover from the composition about the core, wherein the cover has a thickness of from about 0.02 inches to about 0.035 inches.
5 more elements
Dependencies are inferred from the claim text.