US 6,982,301 B1 | ||
Golf ball cores comprising blends of polybutadiene rubbers | ||
Peter R. Voorheis, Fall River, Mass. (US); Samuel A. Pasqua, Jr., Tiverton, R.I. (US); Michael J. Sullivan, Barrington, R.I. (US); David A. Bulpett, Boston, Mass. (US); and Derek A. Ladd, Fairhaven, Mass. (US) | ||
Assigned to Acushnet Company, Fairhaven, Mass. (US) | ||
Filed on Aug. 12, 2003, as Appl. No. 10/639,116. | ||
Application 10/639116 is a division of application No. 10/164809, filed on Jun. 07, 2002, granted, now 6,774,187. | ||
This patent is subject to a terminal disclaimer. | ||
Int. Cl. A63B 37/06 (2006.01); C08L 9/00 (2006.01) |
U.S. Cl. 525—193 | 19 Claims |
1. A golf ball comprising a solid core and a cover disposed about the core, wherein the core is formed from a polybutadiene
blend comprising:
a) a first polybutadiene formed with a cobalt or nickel catalyst having a first Mooney viscosity between about 50 and about
150; and
b) a second polybutadiene formed with a lanthanide series catalyst having a second Mooney viscosity between about 30 and about
100;
wherein the first Mooney viscosity is greater than the second Mooney viscosity, and wherein the blend has a greater weight
percentage of the first polybutadiene than that of the second polybutadiene, and wherein the core comprises a reactive co-agent
in an amount less than about 5 phr by weight of the polybutadiene blend.
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