Patent ID: 8778093

Claim:
A method of removing a polymeric coating that has been applied to an intentionally colored concrete floor having a metal-based colorant component that alters the visible color of the concrete from its natural color, the method comprising: a) applying a coating removal composition to the polymeric coating for a period of time sufficient for the coating removal composition to penetrate and emulsify the polymeric coating; and b) removing the coating removal composition and the polymeric coating from the floor, wherein the intentionally colored concrete floor retains at least 70% of the colorant component after removal of the polymeric coating; wherein the coating removal composition comprises: about 0.5 to 25.0 weight percent of at least one weak metal binding agent, wherein the weak metal binding agent is a primary or secondary ethoxylated amine; a solvent system comprising at least one alcohol or ester; and about 0.5 to 25.0 weight percent of a corrosion inhibition system.