Golf ball with soft core
AssigneeSpalding Sports Worldwide, Inc.
InventorsMark L. Binette, Michael J. Sullivan, Thomas J. Kennedy, III, John L. Nealon, Kevin Shannon, R. Dennis Nesbitt
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Abstract
Disclosed herein is a golf ball utilizing a core that comprises at least two particular types of polybutadiene. In one aspect, a combination of a polybutadiene obtained from a cobalt catalyst is used in conjunction with a polybutadiene obtained from a neodymium catalyst. Also disclosed are golf balls comprising particular cover compositions. In one aspect, a cover composition is disclosed that includes a sodium ionomer, a magnesium ionomer, and a zinc ionomer. The golf balls exhibit improved distance while providing a soft sound and feel.
Claims24
A golf ball comprising:
- a core including (i) a first polybutadiene rubber obtained utilizing a cobalt catalyst and having a Mooney viscosity in the range of from about 70 to about 83, and (ii) a second polybutadiene rubber obtained by utilizing a lanthanide series catalyst and having a Mooney viscosity of from about 30 to about 70;
- and,
- a cover disposed about said core, said cover including (i) a sodium ionomer, (ii) a magnesium ionomer, and (iii) a zinc ionomer,
- wherein said first polybutadiene rubber has a polydispersity in the range of from about 1.9 to about 3.9.
The golf ball of claim 6 wherein said second polybutadiene rubber has a Mooney viscosity of from about 40 to about 65.
A golf ball comprising:
- a core including (i) from about 20% to about 30% by weight of a first polybutadiene rubber obtained utilizing a cobalt or cobalt-based catalyst and having a Mooney viscosity in the range of from about 70 to about 83, and (ii) about 30% to about 45% by weight of a second polybutadiene rubber obtained from a lanthanide series catalyst and having a Mooney viscosity in the range of from about 30 to about 70;
- and
- a cover generally enclosing said core, said cover including (i) a sodium ionomer, (ii) a magnesium ionomer, and (iii) a zinc ionomer.
A golf ball comprising:
- a core including (i) from about 20% to about 30% by weight of a first polybutadiene rubber obtained from a cobalt catalyst and having a Mooney viscosity in the range of from about 70 to about 83, (ii) from about 30% to about 45% of a second polybutadiene rubber obtained from a neodymium catalyst and having a Mooney viscosity of from about 30 to about 70;
- and
- a cover disposed about said core, said cover including (i) from about 40% to about 50% of a sodium ionomer, (ii) from about 40% to about 50% of a magnesium ionomer, and (iii) from about 5% to about 15% of a zinc ionomer.
Dependencies are inferred from the claim text.