Golf balls comprising thermoplastic or thermoset composition having controlled gel time
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a technology of thermoplastics and compositions, applied in the field of golf balls, can solve the problems of not having resilience or light stability comparable to ionomer covers, providing inferior spin and feel to golf balls, etc., and achieves the effects of longer ball flight, higher cor, and more total energy
Inactive Publication Date: 2011-06-09
ACUSHNET CO
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Problems solved by technology
Ionomer covers are virtually cut-proof, but they provide inferior spin and feel to the golf balls.
Conventional polyurethane covers generally afford excellent feel and good durability, but not resilience or light stability comparable to ionomer covers.
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[0047]The cover of the golf ball provides the interface between the ball and a club. Desirable properties for the cover include good moldability, high abrasion resistance, high tear strength, and high resilience. The cover generally should provide sufficient strength for good performance characteristics and durability. The cover may have a single-layer construction, or a multi-layer construction that includes one or more inner cover layers and an outer cover layer. The material compositions described herein, while applicable in any portion of the golf ball, are preferably used to form cover layer(s), including single-layer covers, inner cover layers, and / or outer cover layers.
[0048]The cover layer, particularly the outer cover layer, of the present invention may comprise about 1 weight percent to about 100 weight percent, preferably about 5 weight percent to about 95 weight percent, of a thermoplastic or thermoset composition. The composition, preferably formed from a castable liqui...
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Abstract
A golf ball comprising a core and at least one layer disposed about the core, wherein at least one of the core and the layer comprises a thermoplastic or thermoset composition comprising a reaction product of a polyurethane or polyurea prepolymer comprising at least one isocyanate and a curative comprising a blend of at least one aliphatic diamine and at least one polyaspartic ester formed from reactants comprising at least one aliphatic primary polyamine and at least one maleic or fumaric diester, and wherein the thermoplastic or thermoset composition comprises a gel time of about 90 seconds or greater. Also, a golf ball comprising a core and at least one layer disposed about the core wherein at least one of the core and the layer comprises a thermoplastic or thermoset composition T comprising a reaction product of a polyurethane or polyurea prepolymer P comprising at least one isocyanate and a curative C comprising a blend of at least one aliphatic diamine D and at least one polyaspartic ester formed from reactants comprising at least one aliphatic primary polyamine and at least one maleic or fumaric diester, wherein the thermoplastic or thermoset composition T has a gel time X such that X>1.25Y, and wherein Y is the gel time of a thermoplastic or thermoset composition T′ comprising a reaction product of the polyurethane or polyurea prepolymer P and a curative C′ comprising a blend of aliphatic diamine D and a polyaspartic ester consisting of N,N′-diethylmaleate-2-methyl-pentamethylene diamine.
Description
CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation-in-part of co-pending U.S. patent application Ser. No. 12 / 748,347, filed on Mar. 26, 2010, which is a continuation of co-pending U.S. patent application Ser. No. 12 / 061,960, filed on Apr. 3, 2008, now U.S. Pat. No. 7,709,590, which is a continuation of co-pending U.S. patent application Ser. No. 11 / 940,412, filed on Nov. 15, 2007, now U.S. Pat. No. 7,550,549, which is a continuation of co-pending U.S. patent application Ser. No. 11 / 461,617, filed on Aug. 1, 2006, now U.S. Pat. No. 7,378,483, which is a continuation of U.S. patent application Ser. No. 10 / 859,558, filed on Jun. 2, 2004, now U.S. Pat. No. 7,105,623, which is a continuation-in-part of U.S. patent application Ser. No. 10 / 640,532, filed on Aug. 13, 2003, now U.S. Pat. No. 6,943,213, which is a continuation-in-part of U.S. patent application Ser. No. 10 / 619,313, filed on Jul. 14, 2003, now U.S. Pat. No. 6,903,178, which is a continuation-in-par...
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Application Information
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Patent Type & Authority Applications(United States)
IPC IPC(8): A63B37/00A63B37/02A63B37/12
CPCA63B37/0003A63B37/12A63B37/02A63B37/0024
Inventor RICCI, SHAWNCOMEAU, BRIANPETRICHKO, RANDYBULPETT, DAVID A.RAJAGOPALAN, MURALI