Coatings and method for coloring light-transmitting containers
AssigneePPG Industries, Inc.
InventorsDavid C. Kapp, Russell E. Boston, Leland H. Carlblom, Mildred L. McKinley, Jess A. Kozma
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Abstract
Disclosed herein is a coating composition for coloring transparent containers such as glass bottles, the composition comprising a combination of a film-former such as an acrylic resin, a metal-free polymeric dye reactive with the resin, an adhesion promoter (and optionally an ultraviolet light absorber). Also disclosed are a method of coating containers with such a composition and the resulting product.
Claims11
A water-based, thermosetting, transparent colorant coating composition comprising:
- (i) a film-former including a resin and an internal or external crosslinking agent;
- (ii) a metal-free polymeric dye which is reactive with the film-former;
- and (iii) an adhesion promoter in an effective combination to form a transparent thermoset coating for coloring containers.
A process for coloring a light-transmitting container comprising coating the container with a thermosetting, water-based coating composition comprising a film-former including a resin and an internal or external crosslinking agent, a metal-free polymeric dye which is reactive with the film-former, and an adhesion promoter in an effective combination to form a coating which partially absorbs transmission of visible light.
Dependencies are inferred from the claim text.