Claims
- 1. A golf ball comprising:a core; and a cover formed over the core, the cover composed of a thermosetting polyurethane material formed from reactants comprising at least one polyurethane prepolymer and a curative blend consisting essentially of 4,4′-methylenebis-(2,6-diethyl)-aniline in an amount of 25 parts to 75 parts per 100 parts of the curative blend and a second curing agent in an amount of 25 parts to 75 parts per 100 parts of the curative blend, the second curing agent is N,N′-dialkylamino-diphenylmethane with tetrapropoxylated ethylenediamine; wherein the cover has an aerodynamic surface geometry thereon.
- 2. The golf ball according to claim 1 futher comprising at least one boundary layer disposed between the core and the cover.
- 3. The golf ball according to claim 1 wherein the polyurethane prepolymer is a polypropylene glycol terminated toluene diisocyanate prepolymer with a -NCO group content ranging from 3.0% to 6.0%.
- 4. The golf ball according to claim 2 wherein the boundary layer is composed of a blend of ionomers.
- 5. The golf ball according to claim 1 wherein the polyurethane prepolymer is a polytetramethylene ether glycol terminated toluene diisocyanate prepolymer with a -NCO group content ranging from 3.75% to 7.0%.
- 6. A golf ball comprising:a core comprising a polybutadiene mixture, the core having a diameter ranging from 1.35 inches to 1.64 inches and having a PGA compression ranging from 50 to 90; a boundary layer formed over the core, the boundary layer composed of a blend of ionomer materials, the boundary layer having a thickness ranging from 0.020 inch to 0.075 inch, the blend of ionomer materials having a Shore D hardness ranging from 50 to 75 as measured according to ASTM-D2240; and a cover formed over the boundary layer, the cover composed of a thermosetting polyurethane material formed from reactants comprising polytetramethylene ether glycol terminated toluene diisocyanate prepolymer and a curative consisting essentially of 4,4′-methylenebis-(2,6-diethyl)-aniline in an amount of 25 parts to 75 parts per 100 parts of the curative blend and a second curing agent in an amount of 25 parts to 75 parts per 100 parts of the curative blend, the second curing agent selected from the group consisting of N,N′-bis-alkyl-p-phenylenediamine, N,N′-dialkylamino-diphenylmethane with tetrapropoxylated ethylenediamine and an aliphatic diamine, wherein the thermosetting polyurethane material has a Shore D hardness ranging from 30 to 60 as measured according to ASTM-D2240, a thickness ranging from 0.015 inch to 0.044 inch, and an aerodynamic surface geometry thereon.
CROSS REFERENCE TO RELATED APPLICATIONS
The Present Application is a continuation-in-part application of co-pending U.S. patent application Ser. No. 10/063,979, filed on May 31, 2002.
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
10/063979 |
May 2002 |
US |
Child |
10/064721 |
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US |