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US 2019/0292612 A1Published application
Use of hydroxy functional waterborne resins to create urethane crosslinking in leather finishes
AssigneeLear Corporation
InventorROBERT von BERGE
Life of this patent
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Abstract
A coating composition includes at least one, low Tg, polyol resin having hydroxyl groups available for crosslinking, a polyurethane crosslinker that crosslinks the hydroxyl groups when cured, and water in an amount from about 4 to 20 wt. % of the total weight of the coating composition. Characteristically, solvents other than water are present in an amount less than half the amount of water. The coating composition is advantageously used to finish leather.
Claims20
A coating composition comprising:
- at least one polyol resin having hydroxyl groups available for crosslinking;
- a polyurethane crosslinker that crosslinks the hydroxyl groups when cured;
- and
- water in an amount from about 4 to 20 wt. % of the total weight of the coating composition wherein solvents other than water are present in an amount less than half the amount of water.
1 more element
A method comprising:
- applying a coating composition to a substrate to form an uncured coating on the substrate, the coating composition comprising:
- at least one polyol resin having hydroxyl groups available for crosslinking;
- a polyurethane crosslinker that crosslinks the hydroxyl groups when cured;
- and
- water in an amount from about 4 to 20 wt. % of the total weight of the coating composition wherein solvents other than water are present in an amount less than half the amount of water;
- and
- curing the uncured coating to form a coated substrate.
4 more elements
Dependencies are inferred from the claim text.