Patent EP0622409A2 successfully refreshed from Google Patents.
EP0622409A2
Expired / Lapsed
EP
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Golf ball cover
Assignee: Acushnet Co
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Filing: 1994-04-29
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Granted: —
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Expires: 2014-04-29
Abstract
Abstract A polymer composition and a golf ball employing a cover formed of that composition are disclosed. The polymer composition comprises a blend of a lithium ionomer resin with one or more sodium ionomer resins. When two sodium ionomer resins are used, one has a lower flexural modulus than the other and the ball employing such a cover has excellent spin characteristics.
Inventors
- 👤 Barbara Stefani
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 19:20
CPC Classifications
A; A63; A63B; A63B37/00; A63B37/0003; C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; A63B37/0023; A63B37/0024; A63B37/0029; A63B37/0037; C08L2205/00; C08L2205/02; C08L23/0846; C08L23/0869; C08L23/0876; Y; Y10; Y10S; Y10S524/00; Y10S524/908; Y10S525/00; Y10S525/919; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
20 words
A polymer composition comprising a blend of a lithium ionomer with a first sodium ionomer and a second sodium ionomer.
Claim 2
Dependent Claim
43 words
The polymer composition of claim 1 wherein said lithium ionomer is a copolymer comprising about 95 to 80 parts by weight of ethylene and about 5 to 20 parts by weight of acrylic or methacrylic acid, based on 100 parts by weight copolymer.
Claim 3
Dependent Claim
21 words
The polymer composition of claim 1 or claim 2 wherein said lithium ionomer has a flexural modulus of about 61,000 psi.
Claim 4
Dependent Claim
24 words
The polymer composition of any one of claims 1 to 3 wherein said lithium ionomer is about 45-85 phr by weight of said composition.
Claim 5
Dependent Claim
17 words
The polymer composition of claim 4 wherein said lithium ionomer is about 50-75 phr of said composition.
Claim 6
Dependent Claim
20 words
The polymer composition of claim 4 or claim 5 wherein said lithium ionomer is about 50 phr of said composition.
Claim 7
Dependent Claim
33 words
The polymer composition of any one of claims 1 to 6 wherein said first sodium ionomer has a flexural modulus of about one tenth of the flexural modulus of said second sodium ionomer.
Claim 8
Dependent Claim
37 words
The polymer composition of any one of claims 1 to 6 wherein said first sodium ionomer has a flexural modulus of about 2,800 psi and said second sodium ionomer has a flexural modulus of about 34,000 psi.
Claim 9
Dependent Claim
27 words
The polymer composition of any one of claims 1 to 8 wherein said first sodium ionomer is present in a greater amount than said second sodium ionomer.
Claim 10
Dependent Claim
28 words
The polymer composition of claim 9 wherein said first sodium ionomer is 20-45 phr of said composition, and said second sodium ionomer is 5 phr of said composition.
Claim 11
Dependent Claim
37 words
The polymer composition of claim 10 wherein said first sodium ionomer is 45 phr of said composition, said second sodium ionomer is 5 phr of said composition and said lithium ionomer is 50 phr of said composition.
Claim 12
Dependent Claim
20 words
A golf ball having a cover comprising a polymer composition as claimed in any one of claims 1 to 11.
Claim 13
Dependent Claim
256 words
In a golf ball having a core and a cover, the improvement comprising a cover formed of about 10 to about 75 phr of a first sodium ionomer resin, said first sodium ionomer resin having a flexural modulus of about 2,800 psi, said first sodium ionomer resin is a terpolymer of about 5-50 weight percent of a softening comonomer of any of n- or iso-butyl acrylate, 4-30 weight percent of either acrylic acid or methacrylic acid in which 5-95 percent of the acid groups are neutralized by sodium, and the remainder is ethylene comonomer; about 2-10 phr of a second sodium ionomer resin, said second sodium ionomer resin having a flexural modulus of about 34,000 psi, said second sodium ionomer resin being a copolymer of about 95 to about 80 parts by weight ethylene and about 5 to about 20 parts by weight acrylic or methacrylic acid based on 100 parts by weight of copolymer, said second sodium ionomer resin having about 10 to about 90% of the acid groups neutralized by a sodium ion; and about 45 to about 85 phr of a lithium ionomer resin, said lithium ionomer resin having a flexural modulus of about 61,000 psi, said lithium ionomer resin being a copolymer of about 95 to about 80 parts by weight ethylene and about 5 to about 20 parts by weight acrylic or methacrylic acid based on 100 parts by weight of copolymer, said lithium ionomer resin having about 10 to about 90% of the acid group neutralized by a lithium ion.
Claim 14
Dependent Claim
42 words
The ball of claim 13 wherein said first sodium ionomer is present in an amount of 10-50 phr, said second sodium ionomer is present in an amount of 4-8 phr, and said lithium ionomer is present in an amount of 50-75 phr.
References Cited (Backward Citations)
No citation records indexed.
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