Patent ID: 6793864
Filing Date: 2004-09-21
Classification: A63B,B29C,B29K,B29L,C08G,Y10T

Abstract:
A method of making a golf ball comprising:(a) providirng a prepolymer comprised of a toluene diisocyanate and a polytetramethylene ether glycol having a molecular weight between about 650 to 3000 weight average, wherein said prepolymer has an NCO% content of about 5.5 to 8.0% and heating the polymer to about 140Â° F.; (b) providing a curative for use in casting, wherein said curative is free of catalysts, comprised of a first diamine dimethylthio-2,4-toluenediamine and a second diaminc diethyl-2,4-toluenediamine; (c) mixing the prepolymer with the curative in a mixer to create a polymer mixture wherein a pot life of approximately 55-70 seconds is formed; (d) pouring the mixture into a first mold half; (e) pouring the mixture into a second mold half; (f) lowering a golf ball core into the first mold half such that the golf ball is suspended in the polymer mixture; (g) inverting the first mold half and mating it to the second mold half; (h) heating the mated first and second mold halves containing the polymer mixture and the golf ball core; (i) cooling the mated first and second mold halves containing the polymer mixture and golf ball core; and, (j) removing the molded golf ball from the first and second mold halves and allowing the golf ball to cure.