US 9,808,676 B2
Golf ball layers produced using crosslinked highly-neutralized polymer materials
Michael J. Sullivan, Old Lyme, CT (US); Mark L. Binette, Mattapoisett, MA (US); Robert Blink, Newport, RI (US); and David A. Bulpett, Boston, MA (US)
Assigned to Acushnet Company, Fairhaven, MA (US)
Filed by Acushnet Company, Fairhaven, MA (US)
Filed on Oct. 28, 2014, as Appl. No. 14/525,753.
Prior Publication US 2016/0114216 A1, Apr. 28, 2016
Int. Cl. A63B 37/12 (2006.01); C08L 23/08 (2006.01); C08K 5/103 (2006.01); C08K 5/09 (2006.01); C08K 5/098 (2006.01); C08J 3/24 (2006.01); A63B 37/00 (2006.01); A63B 45/00 (2006.01); C08K 5/00 (2006.01)
CPC A63B 37/0054 (2013.01) [A63B 37/0023 (2013.01); A63B 37/0043 (2013.01); A63B 37/0051 (2013.01); A63B 37/0062 (2013.01); A63B 37/0075 (2013.01); A63B 45/00 (2013.01); C08J 3/24 (2013.01); C08K 5/00 (2013.01); C08K 5/09 (2013.01); C08K 5/098 (2013.01); C08K 5/103 (2013.01); C08L 23/0876 (2013.01)] 15 Claims
 
1. A golf ball comprising:
a cover layer formed from a crosslinked composition consisting essentially of:
a thermoplastic highly-neutralized polymer material comprising:
an acid polymer comprising ethylene, a C3-8 α, β-ethylenically unsaturated carboxylic acid, and a softening monomer;
an organic acid or salt thereof; and
a cation source present in an amount sufficient to neutralize at least 80% of all acid groups;
at least one crosslinking initiator and at least one liquid coagent, wherein the at least one crosslinking initiator comprises a peroxide, a carbon-carbon initiator, or combinations thereof; and
a core.