Ultraviolet radiation curable inks for game balls, golf balls and the like

An ultraviolet radiation curable water-insoluble logo ink for forming an inked surface on at least a portion of a topcoated surface of a ball, said ink comprising,:

• (a) a prepolymer having at least two prepolymer functional moieties, said prepolymer being selected from the group consisting of a first acrylated prepolymer, an unsaturated ester, and mixtures thereof;
• (b) a monomer polymerizable with the prepolymer;
• (c) a photoinitiator;
• (d) a toughening agent, wherein said toughening agent a sterically hindered acrylate being sufficient to maintain adhesion of said ink to said topcoat of at least about 75% of said inked surface after ultraviolet radiation curing;
• and
• (e) a friction reducing, agent.

A golfball with a production print comprising:

• a golf ball having a surface;
• a layer of an ultraviolet cured water-insoluble production ink coating at least a portion of said surface, said production ink comprising:
• a prepolymer having at least two prepolymer functional moieties, wherein said prepolymer is selected from the group consisting of a first acrylated prepolymer, an unsaturated ester, and mixtures thereof,
• a monomer polymerizable with the prepolymer;
• a photoinitiator;
• and
• an adhesion promoting component selected from the group consisting of a carboxylic acid functional monomer, a carboxylic acid functional oligomer, and mixtures thereof, said adhesion promoting component having at least one adhesion promoting functional moiety comprising at least about 2 moles of a carbonyl functionality per mole of said adhesion promoting component;
• and
• c) a topcoat applied to the at least a portion of the inked surface, wherein said production ink has been cured with ultraviolet radiation, and the cured ink surface maintains adhesion of at least about 75% of said inked surface to said surface of said golf ball and to said topcoat after ultraviolet radiation curing and after said production ink with said topcoat.

A golf ball with a logo on at least a portion of a topcoated surface comprising:

• a golf ball having a topcoated surface disposed thereon;
• an ultraviolet cured water-insoluble logo ink on at least a portion of the topcoated surface, said logo ink comprising:
• a prepolymer having two prepolymer function moieties, wherein said prepolymer is selected from the group consisting of a first acrylated prepolymer, an unsaturated ester, and mixtures thereof;
• a polymerizable monomer:
• a photoinitiator;
• and
• a toughening agent, wherein said toughening agent comprises a sterically hindered acrylate said toughening agent being sufficient to maintain adhesion of said ink to said topcoat of at least about 75% of said inked surface after ultraviolet radiation curing.