Multiple layer coating method
AssigneeBASF SE
InventorsRodney L. Briggs, John W. Rehfuss, Walter H. Ohrbom, Gregory G. Menovcik
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Abstract
A method of preparing a multilayer coating is described. The method comprises the steps of: (1) applying onto a substrate a first curable coating composition comprising two components that are reactive with one another to form urethane linkages and a third component that includes one or more epoxy groups, (2) curing the first curable coating composition to form a cured coating, (3) applying a second curable coating composition onto the surface of the coating from step (2), and (4) curing the second curable coating composition.
Claims32
A method of preparing a coating comprising the steps of:
- (1) applying onto a substrate a first curable coating composition comprising two components that are reactive with one another to form urethane linkages, said composition further comprising a third component that includes one or more epoxy groups,
- (2) curing said first curable coating composition to form a cured coating,
- (3) applying a second curable coating composition onto the surface of said coating from step (2), and
- (4) curing said second curable coating composition.
A method of preparing a coating comprising the steps of:
- (1) applying onto a substrate a topcoat of a first curable coating composition comprising two components that are reactive with one another to form urethane linkages, said composition further comprising a third component that comprises one or more epoxy groups,
- (2) curing said first curable coating composition to form a cured topcoat,
- (2a) identifying locations of the topcoat in need of repair,
- (3) applying a curable repair coating composition onto the surface of said topcoat at the locations identified in step (2a), and
- (4) curing said repair coating composition.
Dependencies are inferred from the claim text.