Method for treating thermoplastic polyurethane golf ball covers
A method of forming a golf ball is disclosed herein. The method includes injecting a cover mixture into a mold to form a cover mixture comprising a thermoplastic polyurethane resin and a polyahl, subjecting the golf ball to a polyisocyanated solution to create a golf ball with a polyisocyanated cover, and heating the golf ball or polyisocyanated cover to remove a solvent component of the polyisocyanated solution and promote the reaction of the polyisocyanate with the cover mixture and polyahl.
1. A golf ball comprising:
a core;
a boundary layer disposed over the core:
a cover disposed over the boundary layer, the cover injection molded from a mixture of a thermoplastic polyurethane resin and a polyahl material and the cover reacted with a polyisocyanated solution comprising 4,4′-diphenylmethane diisocyanate, wherein the polyahl material comprises a plurality of active Zerewitinoff hydrogen atoms and is selected from one of the group consisting of a polyol, a polyamine, a polyamide, a polymercaptan, and a polyacid.
2. The golf ball according to claim 1 wherein the cover layer has a thickness ranging from 0.010 inch to 0.025 inch.
3. The golf ball according to claim 1 wherein the cover layer has a thickness ranging from 0.010 inch to 0.040 inch.