Liquid coating composition containing a latent catalyst
AssigneeAxalta Coating Systems IP Co., LLC
InventorsTanja Renkes, Carmen Flosbach
Life of this patent
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Abstract
A liquid coating composition containing a crosslinkable binder A, as an optional component a crosslinker B for the binder A, and a latent catalyst C, wherein C is a carboxyl-functional resin which is present in the liquid coating composition as particles having a melting temperature of 40 to 180° C., measured by DSC at a heating rate of 10 K/min.
Claims11
A liquid coating composition containing a crosslinkable binder A, as an optional component a crosslinker B for the binder A, and a latent catalyst C, wherein C is a carboxyl-functional resin which is present in the liquid coating composition as particles having a melting temperature of 40 to 180° C., measured by DSC at a heating rate of 10 K/min, wherein the crosslinkable binder A is a hydroxyl-functional binder that has a hydroxyl value of from about 60 to about 300 mg of KOH/g, and wherein the crosslinkable binder A is a liquid at room temperature, wherein the liquid coating composition is free of an epoxy-functional component.
A process for the production of a coating layer on a substrate, comprising the steps:
- 1) applying a coating layer of a liquid coating composition on a substrate, wherein the liquid coating composition contains a crosslinkable binder A, as an optional component a crosslinker B for the binder A, and a latent catalyst C, wherein C is a carboxyl-functional resin which is present in the liquid coating composition as particles having a melting temperature of 40 to 180° C., measured by DSC at a heating rate of 10 K/min, wherein the crosslinkable binder A is a hydroxyl-functional binder that has a hydroxyl value of from about 60 to about 300 mg of KOH/g, and wherein the crosslinkable binder A is a liquid at room temperature, wherein the liquid coating composition is free of an epoxy-functional component, and
- 2) thermally curing the coating layer at an object temperature at or above the melting temperature of the catalyst C.
Dependencies are inferred from the claim text.