METHODS FOR APPLYING POLYURETHANE COATINGS TO GOLF BALLS HAVING A THERMOPLASTIC POLYURETHANE COVER
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United States of America Patent
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Issued Date -
Mar 28, 2024
app pub date -
Dec 4, 2023
filing date -
Sep 21, 2017
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Abstract
Golf balls having covers made of thermoplastic polyurethane compositions are provided. Multi-piece golf balls can be made. Polyurethane primer coatings and polyurethane top-coatings are applied to the thermoplastic polyurethane cover. Different coating methods can be used. Isocyanate-rich and polyol-rich polyurethane coatings can be applied. In one embodiment, the golf ball can be treated with a multi-functional isocyanate prior to applying the coatings. The polyurethane cover composition and surface coatings can further include catalysts, ultraviolet (UV)—light stabilizers, and other additives. Heat is used to cure the coatings. The coating methods have many benefits and the finished balls have good physical properties.
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