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US 6,267,693 B1Granted
Golf ball covers containing high acid ionomers
AssigneeSpalding Sports Worldwide, Inc.
InventorMichael J. Sullivan
Life of this patent
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AssigneeSpalding Sports Worldwide, Inc.
InventorMichael J. Sullivan
Estimating the term…
The present invention is directed to a golf ball comprising a core and a cover, wherein the cover comprises a blend of two or more high acid ionomer resins. Each high acid ionomer resin utilized in the blend of the cover composition comprises generally of greater than 16% by weight acid, preferably from about 17 to about 25% by weight acid and more preferably from about 18.5% to about 21.5% by weight acid. The acid groups of the high acid ionomers utilized in the cover compositions of the invention are partially (i.e. generally 10-75 percent, preferably 30-70 percent) neutralized by metal ions such as by sodium, zinc and magnesium ions. When the blend of two or more high acid ionomer resins is utilized to manufacture a golf ball, the golf ball produced thereby, exhibits properties of improved distance without sacrificing characteristics such as playability and/or durability when compared to low acid ionomer and/or low acid/high acid ionomer blends.
A golf ball comprising a core and a cover, wherein said cover comprises a blend of two or more ionomer resins, each ionomer resin comprising from about 18.5% to about 21.5% by weight of a carboxylic acid.
A golf ball comprising a core and a cover, wherein said cover comprises a blend of two or more ionomer resins, each ionomer resin comprising from about 17% to about 25% by weight of a carboxylic acid.
A golf ball comprising a core and a cover, wherein said cover comprises a blend of two or more ionomer resins, each ionomer resin comprising of greater than 16% by weight of a carboxylic acid.
A golf ball comprising a core and a cover, wherein said cover comprises a blend of an ethylene-methacrylic acid copolymer containing greater than 16% by weight methacrylic acid having from about 10% to about 75% of the carboxylic acid groups neutralized with sodium ions, and an ethylene-methacrylic acid copolymer containing greater than 16% by weight methacrylic acid with from about 10% to about 75% of the carboxylic acid groups neutralized by zinc or magnesium ions.
A golf ball comprising a core and a cover, wherein said cover comprises a blend of an ethylene-methacrylic acid copolymer containing from about 17% to about 25% by weight methacrylic acid having from about 10% to about 75% of the carboxylic acid groups neutralized with sodium ions, and an ethylene-methacrylic acid copolymer containing from about 17% to about 25% by weight methacrylic acid with from about 10% to about 75% of the carboxylic acid groups neutralized by zinc or magnesium ions.
A golf ball comprising a core and a cover, wherein said cover comprises a blend of an ethylene-methacrylic acid copolymer containing from about 18.5% to about 21.5% by weight methacrylic acid having from about 10% to about 75% of the carboxylic acid groups neutralized with sodium ions, and an ethylene-methacrylic acid copolymer containing from about 18.5% to about 21.5% by weight methacrylic acid with from about 10% to about 75% of the carboxylic acid groups neutralized by zinc or magnesium ions.
A golf ball comprising a core and a cover, wherein said cover comprises a blend of from about 75 weight percent to about 25 weight percent of an ethylene-methacrylic acid copolymer containing greater than 16% by weight methacrylic acid having from about 10% to about 75% of the carboxylic acid groups neutralized with sodium ions, and from about 25 weight percent to about 75 weight percent of an ethylene-methacrylic acid copolymer containing greater than 16% by weight methacrylic acid with from about 10% to about 75% of the carboxylic acid groups neutralized by zinc or magnesium ions.
A golf ball comprising a core and a cover, wherein said cover comprises a blend of from about 90 weight percent to about 10 weight percent of an ethylene-methacrylic acid copolymer containing greater than 16% by weight methacrylic acid having from about 10% to about 75% of the carboxylic acid groups neutralized with sodium ions, and from about 10 weight percent to about 90 weight percent of an ethylene-methacrylic acid copolymer containing greater than 16% by weight methacrylic acid with from about 10% to about 75% of the carboxylic acid groups neutralized by zinc or magnesium ions.
A golf ball comprising a core and a cover, wherein said cover comprises a blend of from about 90 weight percent to about 10 weight percent of an ethylene-methacrylic acid copolymer containing from about 18.5 to about 21.5% by weight methacrylic acid having from about 30% to about 70% of the carboxylic acid groups neutralized with sodium ions, and from about 10 weight percent to about 90 weight percent of an ethylene-methacrylic acid copolymer containing from about 18.5% to about 21.5% by weight methacrylic acid with from about 30% to about 70% of the carboxylic acid groups neutralized by zinc or magnesium ions.
A golf ball comprising a core and a cover, wherein said cover comprises a blend of from about 75 weight percent to about 25 weight percent of an ethylene-methacrylic acid copolymer containing from about 18.5% to about 21.5% by weight methacrylic acid having from about 30% to about 70% of the carboxylic acid groups neutralized with sodium ions, and from about 25 weight percent to about 75 weight percent of an ethylene-methacrylic acid copolymer containing from about 18.5% to about 21.5% by weight methacrylic acid with from about 30% to about 70% of the carboxylic acid groups neutralized by zinc or magnesium ions.
A golf ball comprising a core and a cover, wherein said cover comprises a blend of from about 90 weight percent to about 10 weight percent of an ethylene-methacrylic acid copolymer containing from about 17% to about 25% by weight methacrylic acid having from about 10% to about 75% of the carboxylic acid groups neutralized with sodium ions, and from about 10 weight percent to about 90 weight percent of an ethylene-methacrylic acid copolymer containing from about 17% to about 25% by weight methacrylic acid with from about 10% to about 75% of the carboxylic acid groups neutralized by zinc or magnesium ions.
A golf ball comprising a core and a cover, wherein said cover comprises a blend of from about 75 weight percent to about 25 weight percent of an ethylene-methacrylic acid copolymer containing from about 17% to about 25% by weight methacrylic acid having from about 30% to about 70% of the carboxylic acid groups neutralized with sodium ions, and from about 25 weight percent to about 75 weight percent of at least one ethylene-methacrylic acid copolymer containing from about 17% to about 25% by weight methacrylic acid with from about 30% to about 70% of the carboxylic acid groups neutralized by zinc or magnesium ions.
A golf ball comprising a core and a cover, wherein said cover comprises a blend of an ethylene-acrylic acid copolymer containing greater than 16% by weight acrylic acid having from about 10% to about 75% of the carboxylic acid groups neutralized with sodium ions, and of an ethylene-acrylic acid copolymer containing greater than 16% by weight acrylic acid with from about 10% to about 75% of the carboxylic acid groups neutralized by zinc ions.
A golf ball comprising a core and a cover, wherein said cover comprises a blend of an ethylene-acrylic acid copolymer containing from about 17% to about 25% by weight acrylic acid having from about 10% to about 75% of the carboxylic acid groups neutralized with sodium ions, and of an ethylene-acrylic acid copolymer containing from about 17% to about 25% by weight acrylic acid with from about 10% to about 75% of the carboxylic acid groups neutralized by zinc ions.
A golf ball comprising a core and a cover, wherein said cover comprises a blend of an ethylene-acrylic acid copolymer containing from about 18.5% to about 21.5% by weight acrylic acid having from about 30% to about 70% of the carboxylic acid groups neutralized with sodium ions, and an ethylene-acrylic acid copolymer containing from about 18.5% to about 21.5% by weight acrylic acid with from about 30% to about 70% of the carboxylic acid groups neutralized by zinc ions.
A golf ball comprising a core and a cover, wherein said cover comprises a blend of from about 90 weight percent to about 10 weight percent of an ethylene-acrylic acid copolymer containing greater than 16% by weight acrylic acid having from about 10% to about 75% of the carboxylic acid groups neutralized with sodium ions, and from about 10 weight percent to about 90 weight percent of an ethylene-acrylic acid copolymer containing greater than 16% by weight methacrylic acid with from about 10% to about 75% of the carboxylic acid groups neutralized by zinc ions.
A golf ball comprising a core and a cover, wherein said cover comprises a blend of from about 90 weight percent to about 10 percent of an ethylene-acrylic acid copolymer containing from about 17% to about 25% by weight acrylic acid having from about 30% to about 70% of the carboxylic acid groups neutralized with sodium ions, and from about 10 weight percent to about 90 weight percent of at least one ethylene-acrylic acid copolymer containing from about 17% to about 25% by weight acrylic acid with from about 30% to about 70% of the carboxylic acid groups neutralized by zinc ions.
A golf ball comprising a core and a cover, wherein said cover comprises a blend of from about 90 weight percent to about 10% weight percent of an ethylene-acrylic acid copolymer containing from about 18.5% to about 21.5% by weight acrylic acid having from about 30% to about 70% of the carboxylic acid groups neutralized with sodium ions, and from about 10 weight percent to about 90 weight percent of at least one ethylene-acrylic acid copolymer containing from about 18.5% to about 21.5% by weight acrylic acid with from about 30% to about 70% of the carboxylic acid groups neutralized by zinc ions.
A golf ball having an improved coefficient of restitution, comprising a core and a cover, wherein said cover comprises a blend of two or more ionomer resins, each ionomer resin comprising greater than 16% by weight of a carboxylic acid.
Dependencies are inferred from the claim text.