Coating formulation, method, and coated substrate
AssigneeLa Barge, Inc.
InventorThomas J. Legbandt
Life of this patent
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Abstract
A formulation which may be applied to a substrate to produce a flexible, high temperature, thermally stable and color stable film thereon. The formulation comprises a poly(1,3-imidazolidine-2,4,5-trione) polymer, a free radical scavenger in an amount sufficient to inhibit cleavage and cross-linking of the polymer by action of oxygen thereon, and a solvent for the polymer. Also disclosed are a method for applying a flexible, high temperature, thermally stable and color stable color coating to a polyimide substrate; the substrate so coated; and an insulated conductor assembly having a polyimide insulative cover and an imidazolidine trione based-top-coating over the cover.
Claims4
An insulated conductor assembly comprising a conductor, a polyimide insulative cover surrounding said conductor, and over said cover a color coding topcoating comprising a poly(1,3-imidazolidine-2,4,5-trione) polymer, a coloring agent compatible with said imidazolidine-trione polymer, and a free radical scavenger in a proportion sufficient to inhibit cleavage and cross-linking of said imidazolidine-trione polymer by action of oxygen thereon.
Dependencies are inferred from the claim text.