Golf ball with sulfur cured inner core component
First Claim
1. A golf ball comprising:
- a center core component formed from a first composition comprising a cis-1,4 polybutadiene and a sulfur curing agent, wherein said sulfur curing agent comprises at least one of N-oxydiethylene 2-benzothiazole sulfenamide, N,N-di-orthotolyguanidine, bismuth dimethyldithiocarbamate, N-cyclohexl 2-benzothiazole sulfenamide, N,N-diphenylguanidine or combinations thereof;
at least one core layer disposed about said center core component thereby forming an intermediate ball, said core layer formed from a second composition comprising a cis-1,4 polybutadiene and a peroxide curing agent; and
at least one cover layer disposed about said core layer thereby forming said golf ball.
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Abstract
A golf ball is disclosed that includes a core assembly comprising a center core component and at least one core layer and a cover comprising at least one layer. The center core component preferably is formed from a sulfur-cured polybutadiene. The core layer component preferably is formed from a peroxide-cured polybutadiene and a metal salt of an unsaturated fatty acid such as zinc diacrylate or zinc dimethacrylate. The resulting golf ball of the present invention provides enhanced playability characteristics (i.e., spin and feel) without sacrificing distance or durability properties. The sulfur-cured center core component exhibits a remarkable combination of properties—a high resiliency coupled with being very soft.
232 Citations
15 Claims
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1. A golf ball comprising:
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a center core component formed from a first composition comprising a cis-1,4 polybutadiene and a sulfur curing agent, wherein said sulfur curing agent comprises at least one of N-oxydiethylene 2-benzothiazole sulfenamide, N,N-di-orthotolyguanidine, bismuth dimethyldithiocarbamate, N-cyclohexl 2-benzothiazole sulfenamide, N,N-diphenylguanidine or combinations thereof;
at least one core layer disposed about said center core component thereby forming an intermediate ball, said core layer formed from a second composition comprising a cis-1,4 polybutadiene and a peroxide curing agent; and
at least one cover layer disposed about said core layer thereby forming said golf ball. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12)
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11. A golf ball comprising:
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a center core component formed from a first composition comprising a cis-1,4 polybutadiene and a sulfur curing agent;
at least one core layer disposed about said center core component thereby forming an intermediate ball, said core layer formed from a second composition comprising a cis-1,4 polybutadiene and a peroxide curing agent; and
at least one cover layer disposed about said core layer thereby forming said golf ball;
wherein said first composition also comprises an accelerator; and
wherein said accelerator comprises at least one of mercaptobenzothiazoles, sulfenamides, dithiocarbamates, thiuram sulfides, guanidines, thioureas, xanthates, dithiophosphates, aldehyde-amines, dibenzothiadyl disulfide, N,N′
-diccyclohexyl-2-benzothiadylsulfenamide, hexamethylenetetramine, mercaptbenzothiazole, tetramethylthiuram disulfide, tetraethylthiuram disulfide, tetrabutylthiuram disulfide or combinations thereof.
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13. A golf ball comprising:
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a generally spherical inner core component formed from a first composition including (i) a cis-1, 4 polybutadiene having a cis-1, 4 content greater than 90 percent, (ii) a sulfur curing agent comprising at least one of N-oxydiethylene 2-benzothiazole sulfenamide, N,N-di-orthotolyguanidine, bismuth dimethyldithiocarbamate, N-cyclohexyl 2-benzothiazole sulfenamide, N,N-diphenylguanidine or combinations thereof, and (iii) an accelerator comprising at least one of mercaptobenzothiazoles, sulfenamides, dithiocarbamates, thiruam sulfides, guanidines, thioureas, xanthates, dithiophosphates, aldehyde-amines, dibenzothiadyl disulfide, N,N′
-diccyclohexyl-2-benzothiadylsulfenamide, hexamethylenetetramine, mercaptbenzothiazole, tetramethylthiuram disulfide, tetraethylthiuram disulfide, tetrabutylthiuram disulfide or combinations thereof;
at least one core layer disposed on said inner core component, said core layer formed from a second composition including (i) a cis-1,4 polybutadiene having a cis-1,4 content greater than 90 percent, and (ii) a peroxide curing agent comprising at least one of dicumyl peroxide;
2,5-dimethyl-2,5-di(t-butylperoxy) hexane;
2,5-dimethyl-2,5-di(t-butylperoxy) hexyne;
2,5-dimethyl-2,5-di(benzoylperoxy) hexane;
2,2′
-bis(t-butylperoxy)-di-iso-propylbenzene;
1,1-bis(t-butylperoxy)-3,3,5-trimethyl cyclohexane;
n-butyl 4,4-bis(t-butyl-peroxy) valerate;
t-butyl perbenzoate;
benzoyl peroxide;
n-butyl 4,4′
-bis(butylperoxy) valerate;
di-t-butyl peroxide;
2,5-di-(t-butylperoxy) -2,5 dimethyl hexane;
or combinations thereof; and
at least one cover layer disposed on said core Layer. - View Dependent Claims (14, 15)
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Specification