Use of biuret and trimer isocyanates as crosslinkers in golf ball coatings
AssigneeLisco, Inc.
InventorThomas J. Kennedy
Life of this patent
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Abstract
A golf ball having an improved urethane top coat is disclosed. The top coat is formed from a two-part polyurethane system where the first part contains a hydroxyl functional polyol and the second part contains a diisocyanate crosslinking agent selected from the group consisting of biurets of hexamethylene diisocyanate and isocyanurate trimers of hexamethylene diisocyanate. The top coat made with such crosslinking agents exhibits superior adhesion and abrasion resistance, and superior non-yellowing properties upon exposure to U.V. radiation.
Claims20
In a golf ball having a clear polyurethane top coat made by combining a polyol portion and a diisocyanate portion, the improvement comprising said diisocyanate being selected from the group consisting of a biuret of hexamethylene diisocyanate and an isocyanurate trimer of hexamethylene diisocyanate.
A golf ball comprising:
- a cover;
- and
- a clear polyurethane top coat, the top coat being formed from a two-part urethane system having a first part comprising a polyol and a second part consisting essentially of a solvent and a diisocyanate selected from the group consisting of a biuret and an isocyanurate trimer of hexamethylene diisocyanate.
Dependencies are inferred from the claim text.