Finishes containing light interference pigments
AssigneeCiba Specialty Chemicals Corporation
InventorsEdward Ephraim Jaffe, Franklin Roberts Hilfiker, Milton John Misogianes
Life of this patent
Estimating the term…
Abstract
This application discloses two-coat and three-coat automotive finishes, articles coated by an automotive finish and a process for their preparation wherein polychromism is achieved in the finish by incorporating an opaque, light interference pigment into the topcoat or a midcoat. The invention further relates to a coating composition which contains an opaque interference pigment at a pigment to binder ratio of less than 7/100.
Claims29
A process for coating a substrate, which process comprises:
- (a) applying a first coating to the substrate, which first coating comprises an effective pigmenting amount of an opaque pigment;
- (b) applying a second coating over the first coating, which second coating comprises an effective polychromism-producing amount of an opaque interference pigment, but does not completely hide the first coating.
A coated substrate comprising a first coating and a second coating wherein the first coating comprises an effective pigmenting amount of an opaque pigment;
- and the second coating comprises an effective flop-producing amount of an opaque interference pigment, but does not completely hide the first coating.
A coating composition which comprises a solvent, a binder and an opaque interference pigment at a pigment to binder ratio of less than 7/100.
Dependencies are inferred from the claim text.