Patent ID: 6306049
Filing Date: 2001-10-23
Classification: A63B,C08L,Y10T

Abstract:
A method for making a golf ball core comprising:(a) selecting a low modulus ionomer terpolymer or acid terpolymer of formula: ##STR3##whereinR.sub.1, R.sub.2, and R.sub.3 are hydrogen or CH.sub.3 ;R.sub.4 is linear or branched alkyl of formula C.sub.n H.sub.2n+1, where n is an integer, such as CH.sub.3, C.sub.2 H.sub.5, C.sub.3 H.sub.7, C.sub.4 H.sub.9, and C.sub.5 H.sub.11 ;m.sup.+ is H.sup.+, Li.sup.+, Zn.sup.++, Ca.sup.++, Ti.sup.++, Mg.sup.++, Na.sup.+, W.sup.+++, or Zr.sup.++ ; andx ranges from about 20 to about 85 weight per cent of the polymer, y ranges from about 1 to about 50 weight per cent of the polymer, and z ranges from about 1 to about 30 weight per cent of the polymer;(b) forming a rubber or elastomer blend comprising the low modulus ionomer or acid terpolymer, a base rubber, a metal salt acrylate or diacrylate, and an initiator;(c) molding the blend for a time and at a temperature sufficient to cross link the blend to form a golf ball core; and(d) molding a cover around the golf ball core to form a golf ball.