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 b
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.
대표청구항▼
1. A method of forming a golf ball comprising the steps of: providing a core;providing a layer disposed about the core;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 satura
1. A method of forming a golf ball comprising the steps of: providing a core;providing a layer disposed about the core;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; andthe curative blend; anddisposing a cover formed from the composition about the layer. 2. The method of claim 1, wherein the step of providing a layer comprises providing a layer comprising ionomer. 3. The method of claim 1, wherein the second freezing point is less than the first freezing point by about 5° F. or greater. 4. The method of claim 3, wherein the second freezing point is less than the first freezing point by about 10° F. or greater. 5. The method of claim 1, wherein the step of providing a curative blend comprises selecting a freezing point depressing agent having a freezing point from about −10° F. to about −100° F. 6. The method of claim 1, wherein the step of providing a curative blend comprises selecting a freezing point depressing agent comprising hydroxy-terminated freezing point depressing agents selected from the group consisting of 1,3-propanediol, 2-methyl-1,3-propanediol, 2-methyl-1,4-butanediol, 1,2-butanediol, 1,3-butanediol, ethylene glycol, diethylene glycol, 1,5-pentanediol, polytetramethylene glycol, propylene glycol, or mixtures there of. 7. The method of claim 1, wherein the freezing point depressing agent has a freezing point of about 10° F. or less. 8. A method of forming a golf ball comprising: providing a core;providing an intermediate later comprising a thermoplastic material;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; anda 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, wherein the pigment is dispersed in a grind vehicle; andforming a cover from the composition disposed about the intermediate layer. 9. The method of claim 8, wherein the saturated freezing point depressing agent has a freezing point of about −10° F. to about −120° F. 10. The method of claim 8, wherein the saturated curing agent has a first freezing point and the curative blend has a second freezing point that is less than the first freezing point by about 5° F. or greater. 11. The method of claim 10, wherein the saturated curing agent has a first freezing point and the curative blend has a second freezing point that is less than the first freezing point by about 10° F. or greater. 12. The method of claim 8, wherein the saturated freezing point depressing agent is present in an amount of about 10 percent or greater by weight of the curative blend. 13. A method of forming a golf ball comprising the steps of: providing a core;providing a layer disposed about the 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; andthe curative blend; andforming a cover from the composition about the layer, wherein the cover has a thickness of from about 0.02 inches to about 0.035 inches. 14. The method of claim 13, wherein the curative blend has a freezing point of about −30° F. to about −70° F. 15. The method of claim 13, wherein the step of providing a curative blend comprises selecting a freezing point depressing agent from the group consisting of 1,3-propanediol, 2-methyl-1,3-propanediol, 2-methyl-1,4-butanediol, 1,2-butanediol, 1,3-butanediol, ethylene glycol, diethylene glycol, 1,5-pentanediol, polytetramethylene glycol, propylene glycol, and mixtures thereof. 16. The method of claim 13, wherein the step of providing a curative blend comprises selecting a freezing point depressing agent having a freezing point from about −10° F. to about −100° F. 17. The method of claim 13, wherein the curing agent has a first freezing point and the curative blend has a second freezing point that is less than the first freezing point by about 5° F. or greater. 18. The method of claim 17, wherein the second freezing point is less than the first freezing point by about 10° F. or greater. 19. The method of claim 13, wherein the step of providing a layer comprises providing a layer comprising a thermoplastic material.
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