UV-curable clear coat for golf balls
OwnerSteven C. Crast, Ramon Buella Dinerosinventors
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Abstract
A UV-curable coating for use with golf balls and other substrates includes one or more low viscosity polyether acrylate, a functional carbodiimide resin, one or more low viscosity aliphatic urethane polyacrylate oligomer, and a photoinitiator selected from one or more of S mono-aryl ketones, trimethylbenzoyldiphenyl phosphinates, and/or phosphine oxides. In addition, a method of curing a UV-curable coating is disclosed. The method includes the steps of spraying the formulation onto the exterior of a substrate, surrounding the substrate in an inert gas environment, and irradiating the substrate with ultraviolet radiation from a doped medium pressure mercury vapor lamp.
Claims9
A golf ball comprising a polyurethane top coat covering substantially the entire golf ball the polyurethane top coat formed from a UV-curable coating comprising at least one low viscosity polyether acrylate, a functional carbodiimide resin, at least one low viscosity urethane acrylate oligomer, and a photoinitiator.
A golf ball comprising a polyurethane top coat covering substantially the entire golf ball, the polyurethane top coat formed from a UV-curable coating comprising at least one low viscosity polyether acrylate in an amount ranging from 35 to 90 parts per weight of the UV-curable coating, a functional carbodiimide resin in an amount ranging from 1 to 3 parts per weight of the UV-curable coating, at least one low viscosity urethane acrylate oligomer in an amount ranging from 5 to 60 parts per weight of the UV-curable coating, and a photoinitiator in an amount ranging from 0.25 to 4.00 parts per weight of the UV-curable coating.
Dependencies are inferred from the claim text.