Patent ID: 9011984
Filing Date: 2015-04-21
Classification: C08L,C09D,Y10T

Abstract:
1. A process for coating a substrate, comprising: applying a one-component waterborne base coating composition onto a substrate, the base coating composition comprising a first aqueous epoxy acrylate/polyurethane dispersion; applying a one-component waterborne top coating composition wet-on-wet onto the applied base coating composition after the applied base coating composition develops a pendulum hardness of at least 50% of a pendulum hardness that would be exhibited by the base coating composition after UV cure, the top coating composition comprising a mixture of a second aqueous epoxy acrylate/polyurethane dispersion and an aqueous polyester acrylate/polyurethane dispersion; and exposing the applied coating compositions to UV radiation to simultaneously cure both the base coating composition and the top coating composition; wherein the first aqueous epoxy aqueous acrylate/polyurethane dispersion may be the same or different than the second aqueous epoxy acrylate/polyurethane dispersion.