Patent EP0568332A2 successfully refreshed from Google Patents.
EP0568332A2
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EP
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Solid golf ball
Assignee: Sumitomo Rubber Industries Ltd
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Filing: 1993-04-28
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Granted: —
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Expires: 2013-04-28
Abstract
Abstract The present invention provides a one-piece solid golf ball or a two or more piece solid golf ball which comprises an inner core and a cover covering the inner core. The one-piece solid golf ball is formed from a rubber composition which comprises; a base rubber, vulcanized rubber powder, and a vulcanizing agent. The two or more piece solid golf ball comprises an inner core and a cover covering the inner core, the inner core being composed of either one uniform rubber materlal or a combination of a center and one or more outer layers disposed over the center, wherein one or more rubber portions of the inner core are formed from a rubber composition comprising: a base rubber, vulcanized rubber powder, and a vulcanizing agent.
Inventors
- 👤 Hidenori Hiraoka
- 👤 Yoshimasa Koizumi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 17:52
CPC Classifications
A; A63; A63B; A63B37/00; A63B37/0003; C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08L; C08L9/00; A63B37/0023; A63B37/0029; A63B37/0031; A63B37/005; A63B37/0051; A63B37/0054; A63B37/007; A63B37/0072; A63B37/0073; A63B37/0074; A63B37/0077; A63B37/0094; C08L19/00; C08L19/003
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
21 words
A one-piece solid golf ball formed from a rubber composltion comprising: a base rubber, vulcanized rubber powder, and a vulcanizing agent.
Claim 2
Dependent Claim
24 words
A one-piece solid golf ball as claimed in claim 1 wherein the base rubber is a butadiene rubber comprising at least 40% of cis-l,4-butadiene.
Claim 3
Dependent Claim
50 words
A one-piece solid golf ball as claimed in claim 1 or claim 2 wherein the vulcanized rubber powder is formed from a vulcanized rubber having a hardness of 40 to 95 (JIS-C hardness tester), an impact resilience of 50% or more amd a tensile strength of 70 Kg/cm² or more.
Claim 4
Dependent Claim
47 words
A one-piece solid golf ball as claimed in claim 3 wherein the vulcanized rubber is formed from a rubber composition comprising a butadiene rubber containing at least 40% of cis-1,4-butadiene, a metal salt of an α,β-ethylenically unsaturated carboxylic acid, an organic peroxide vulcanizing agent and a filler.
Claim 5
Dependent Claim
21 words
A one-piece solid golf ball as claimed in any one of the preceding claims wherein the vulcanizing agent is dicumyl peroxide.
Claim 6
Dependent Claim
23 words
A one-piece solid golf ball as claimed in any one of the preceding claims wherein the rubber composition further comprises a co-crosslinking agent.
Claim 7
Dependent Claim
17 words
A one-piece solid golf ball as claimed in claim 6 wherein the co-crosslinking agent is zinc (meth)acrylate.
Claim 8
Dependent Claim
42 words
A one-piece solid golf ball as claimed in any one of the preceding claims wherein the vulcanized rubber powder is contained in an amount of from 1 to 35 parts by weight based on 100 parts by weight of the base rubber.
Claim 9
Dependent Claim
41 words
A one-piece solid golf ball as claimed in any one of the preceding claims wherein the vulcanizing agent is contained in an amount of from 0.1 to 6 parts by weight based on 100 parts by weight of the base rubber.
Claim 10
Dependent Claim
41 words
A one-piece solid golf ball as claimed in any one of the preceding claims wherein the co-crosslinklng agent is contained in an amount of from 5 to 50 parts by weight based on 100 parts by weight of the base rubber.
Claim 11
Dependent Claim
73 words
A two or more piece solid golf ball comprising an inner core and a cover covering the inner core, the inner core being composed of either one uniform rubber material or a combination of a center and one or more outer layers disposed over the center, wherein one or more rubber portions of the inner core are formed from a rubber composition comprising: a base rubber, vulcanized rubber powder, and a vulcanizing agent.
Claim 12
Dependent Claim
27 words
A two or more piece solid golf ball as claimed in claim 11 wherein the base rubber is a butadiene rubber comprising at least 40% of cis-1,4-butadiene.
Claim 13
Dependent Claim
53 words
A two or more piece solid golf ball as claimed in claim 11 or claim 12 wherein the vulcanized rubber powder is formed from a vulcanized rubber having a hardness of 40 to 95 (JIS-C hardness tester), an impact resilience of 50 or more and a tensile strength of 70 Kg/cm² or more.
Claim 14
Dependent Claim
50 words
A two or more piece solid golf ball as claimed in claim 13 wherein said vulcanized rubber is formed from a rubber composition comprising a butadiene rubber containing at least 40% of cis-1,4-butadiene, a metal salt of an α,β-ethylenically unsaturated carboxylic acid, an organic peroxide vulcanizing agent and a filler.
Claim 15
Dependent Claim
25 words
A two or more plece solid golf ball as claimed in any one of claims 11 to 14 wherein the vulcanizing agent is dicumyl peroxide.
Claim 16
Dependent Claim
27 words
A two or more piece solid golf ball as claimed in any one of claims 11 to 15 wherein the rubber composition further comprises a co-crosslinking agent.
Claim 17
Dependent Claim
20 words
A two or more piece solid golf ball as claimed in claim 6 wherein the co-crosslinking agent is zinc (meth)acrylate.
Claim 18
Dependent Claim
47 words
A two or more piece solid golf ball as claimed in any one of claims 11 to 17 wherein the vulcanized rubber powder is contained in an amount of from 1 to 35 parts by weight based on 100 parts by weight of of the base rubber.
Claim 19
Dependent Claim
45 words
A two or more piece solid golf ball as claimed in any one of claims 11 to 18 wherein the vulcanizing agent is contained in an amount of from 0.1 to 6 parts by weight based on 100 parts by weight of the base rubber.
Claim 20
Dependent Claim
45 words
A two or more piece solid golf ball as claimed in any one of claims 11 to 19 wherein the co-crosslinklng agent is contained in an amount of from 5 to 50 parts by weight based on 100 parts by weight of the base rubber.
References Cited (Backward Citations)
No citation records indexed.
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