Patent US5120791A successfully refreshed from Google Patents.
US5120791A
Expired / Lapsed
US
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Golf ball cover compositions
Assignee: Spalding and Evenflo Companies Inc
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Filing: 1990-07-27
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Granted: 1992-06-09
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Expires: 2010-07-27
Abstract
Abstract The present invention is directed to improved cover compositions for golf ball construction and the resulting golf balls produced utilizing the improved cover compositions. The novel golf ball cover compositions of the invention comprise a blend of hard ionomeric resins, preferably acrylic acid based ionomers, and recently developed acrylic acid based soft ionomers. When the cover compositions of the invention are utilized to manufacture golf balls, the golf balls produced thereby, exhibit properties of improved distance without sacrificing playability and/or durability when compared to known hard-soft ionomer blends.
Inventors
- 👤 Michael J. Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:21
CPC Classifications
A; A63; A63B; A63B37/00; A63B37/0003; A63B37/0023; A63B37/0024; A63B37/0029; A63B37/0031; A63B37/0037; A63B37/007; A63B37/0072; A63B37/0074; C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L2205/00; C08L2205/02; C08L23/0846; C08L23/0869; C08L23/0876; Y; Y10; Y10S; Y10S524/00; Y10S524/908; Y10S525/00; Y10S525/919
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
167 words
A golf ball comprising a core and a cover, wherein said cover comprises: from about 90 to about 10 percent by weight of a hard ionomer which is a sodium or zinc salt of the copolymer of an olefin having from 2 to 8 carbon atoms and an unsaturated monocarboxylic acid from 3 to 8 carbon atoms, wherein said hard ionomer has a hardness greater than 50 on the Shore D scale and a flexural modulus of from about 15,000 to about 70,000 psi; and, from about 10 to about 90 percent by weight of an acrylic acid based soft ionomer which is a sodium or zinc salt of a terpolymer of an olefin having 2 to 8 carbon atoms, acrylic acid, and an unsaturated monomer of the acrylate ester class having from 1 to 21 carbon atoms, wherein said soft ionomer has a hardness from about 20 to about 40 on the Shore D scale and a flexural modulus of from about 2,000 to 10,000 psi.
Claim 2
Dependent Claim
167 words
A golf ball comprising a core and a cover, wherein said cover comprises: from about 90 to about 10 percent by weight of a hard ionomer which is a sodium or zinc salt of the copolymer of an olefin having from 2 to 8 carbon atoms and an unsaturated monocarboxylic acid from 3 to 8 carbon atoms, wherein said hard ionomer has a hardness greater than 50 on the Shore D scale and a flexural modulus of from about 15,000 to about 70,000 psi; and, from about 10 to about 90 percent by weight of an acrylic acid based soft ionomer which is a sodium or zinc salt of a terpolymer of an olefin having 2 to 8 carbon atoms, acrylic acid, and an unsaturated monomer of the acrylate ester class having from 1 to 21 carbon atoms, wherein said soft ionomer has a hardness from about 20 to about 40 on the Shore D scale and a flexural modulus of from about 2,000 to 10,000 psi.
Claim 3
Dependent Claim
24 words
The golf ball of claim 1, wherein the hard ionomer is a sodium or zinc salt of the copolymer of ethylene and acrylic acid.
Claim 4
Dependent Claim
24 words
The golf ball of claim 1, wherein the soft ionomer is a zinc salt of a terpolymer of ethylene, acrylic acid and methyl acrylate.
Claim 5
Dependent Claim
38 words
The golf ball of claim 2, wherein said cover composition comprises from about 70 to about 30 percent by weight of the hard ionomer and from about 30 to about 70 by weight percent of the soft ionomer.
Claim 6
Dependent Claim
38 words
The golf ball of claim 3, wherein said cover composition comprises from about 70 to about 30 percent by weight of the hard ionomer and from about 30 to about 70 by weight percent of the soft ionomer.
Claim 7
Dependent Claim
38 words
The golf ball of claim 1, wherein said cover composition comprises from about 60 to about 40 percent by weight of the hard ionomer and from about 40 to about 60 percent by weight of the soft ionomer.
Claim 8
Dependent Claim
38 words
The golf ball of claim 3, wherein said cover composition comprises from about 60 to about 40 percent by weight of the hard ionomer and from about 40 to about 60 percent by weight of the soft ionomer.
Claim 9
Dependent Claim
49 words
A golf ball comprising a core and a cover, wherein said cover comprises a blend of from about 70 to about 30 percent by weight of an acrylic acid based hard ionomer and from about 30 to about 70 percent by weight of an acrylic acid based soft ionomer.
Claim 10
Dependent Claim
49 words
A golf ball comprising a core and a cover, wherein said cover comprises a blend of from about 70 to about 30 percent by weight of an acrylic acid based hard ionomer and from about 30 to about 70 percent by weight of an acrylic acid based soft ionomer.
Claim 11
Dependent Claim
70 words
A golf ball comprising a core and a cover, wherein said cover comprises a blend of from about 70 to about 30 percent by weight of a hard ionomer which is a sodium or zinc salt of an ethylene-acrylic acid copolymer and from about 30 to about 70 percent by weight of a soft ionomer which is a zinc salt of a terpolymer of ethylene, acrylic acid and methyl acrylate.
Claim 12
Dependent Claim
70 words
A golf ball comprising a core and a cover, wherein said cover comprises a blend of from about 70 to about 30 percent by weight of a hard ionomer which is a sodium or zinc salt of an ethylene-acrylic acid copolymer and from about 30 to about 70 percent by weight of a soft ionomer which is a zinc salt of a terpolymer of ethylene, acrylic acid and methyl acrylate.
Claim 13
Dependent Claim
55 words
The golf ball of claim 9, wherein the hard ionomer is a blend of from about 70 to about 30 weight percent of an ethylene-acrylic acid copolymer which is neutralized with a zinc ion and from about 30 to about 70 weight percent of an ethylene-acrylic acid copolymer which is neutralized with a sodium ion.
Claim 14
Dependent Claim
78 words
The golf ball of claim 9, wherein the hard ionomer is a blend of from about 70 to about 30 weight percent of an ethylene-acrylic acid copolymer containing about 16% by weight acrylic acid with about 30% of the carboxylic acid groups neutralized by zinc ions and from about 30 to 70 weight percent of an ethylene-acrylic acid copolymers containing about 11% by weight acrylic acid having about 40% of the carboxylic acid groups neutralized with sodium ions.
Claim 15
Dependent Claim
22 words
The golf ball of claim 1, wherein said cover comprises a mixture of one or more pigments, an optical brighteners and/or dye.
Claim 16
Dependent Claim
22 words
The golf ball of claim 8, wherein said cover comprises a mixture of one or more pigments, an optical brighteners and/or dye.
Claim 17
Dependent Claim
22 words
The golf ball of claim 9, wherein said cover comprises a mixture of one or more pigments, an optical brighteners and/or dye.
References Cited (Backward Citations)
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