초록

Heat-stable coatings on cookware can be made stain-resistant by including a pigmented brown intermediate layer and a clear topcoat layer containing mica or coated mica platelets for sparkle. Such coatings are particularly suitable for electrical cookware.

대표청구항 ▼

A cookware article comprising a substrate coated with a heat-stable coating system comprising three layers, each layer containing a polymer stable at temperatures above 300°C., said layers including a primer layer in direct contact with the substrate and which adheres the coating system to the subst

A cookware article comprising a substrate coated with a heat-stable coating system comprising three layers, each layer containing a polymer stable at temperatures above 300°C., said layers including a primer layer in direct contact with the substrate and which adheres the coating system to the substrate, an intermediate layer in contact with the primer layer and containing pigments which mask the brown color of food stains that develop in the coating system during cooking, and a light-transmitting topcoat layer in contact with the intermediate layer and containing mica or mica platelets coated with pigment, giving a sparkling appearance to the coating system. The article of claim 1 containing an electrical resistance heat source. The article of claim 11 in which the electrical heat source is in the form of a discrete pattern on the opposite side of the substrate from the coating system.