Patent US4259375A successfully refreshed from Google Patents.
US4259375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decorative process
Assignee: EIDP Inc
•
Filing: 1979-05-31
•
Granted: 1981-03-31
•
Expires: 1999-05-31
Abstract
Abstract A smooth heat-stable coating including a decorative pattern is applied to a substrate by applying and drying a primer coat and then applying, wet-on-wet, a base coat, an intermediate coat in the form of a decorative pattern, and a topcoat, then heating to dry the base, intermediate and topcoats simultaneously and to cure the entire coating. Each coat includes an aqueous carrier. The primer, base coat and topcoat include a heat-stable polymer stable at temperatures above 300° C., preferably polytetrafluoroethylene.
Inventors
- 👤 Eustathios Vassiliou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:15
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/50; B05D7/56; B05D7/57; B05D7/574; B05D5/00; B05D5/06; B05D5/08; B05D5/083
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
188 words
A process of applying to a substrate a smooth, heat-stable coating in aqueous liquid carrier, said coating including a decorative pattern, which process consists essentially of the sequential steps of (a) applying directly to said substrate a primer coat including aqueous liquid carrier and a heat-stable polymer composition stable at temperatures above 300° C. and removing the liquid carrier from said primer coat, (b) applying to said primer coated substrate a base coat composition including aqueous liquid carrier and a heat-stable polymer composition stable at temperatures above 300° C., (c) while the base coat still contains the liquid carrier, applying to said base coat a decorative pattern of an intermediate coat composition including aqueous liquid carrier and a colorant which produces a darkness or color differing from that of the base coat, (d) while the intermediate coat still contains the liquid carrier, applying to said intermediate coat a light-transmitting topcoat composition including aqueous liquid carrier and a heat-stable polymer composition stable at temperatures above 300° C., and (e) heating the coated substrate to drive off the liquid carrier and cure the coats to form a smooth, heat-stable coating.
Claim 2
Dependent Claim
188 words
A process of applying to a substrate a smooth, heat-stable coating in aqueous liquid carrier, said coating including a decorative pattern, which process consists essentially of the sequential steps of (a) applying directly to said substrate a primer coat including aqueous liquid carrier and a heat-stable polymer composition stable at temperatures above 300° C. and removing the liquid carrier from said primer coat, (b) applying to said primer coated substrate a base coat composition including aqueous liquid carrier and a heat-stable polymer composition stable at temperatures above 300° C., (c) while the base coat still contains the liquid carrier, applying to said base coat a decorative pattern of an intermediate coat composition including aqueous liquid carrier and a colorant which produces a darkness or color differing from that of the base coat, (d) while the intermediate coat still contains the liquid carrier, applying to said intermediate coat a light-transmitting topcoat composition including aqueous liquid carrier and a heat-stable polymer composition stable at temperatures above 300° C., and (e) heating the coated substrate to drive off the liquid carrier and cure the coats to form a smooth, heat-stable coating.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein the colorant of the intermediate coat composition includes pigments.
Claim 4
Dependent Claim
31 words
The process of claim 1 wherein the colorant of the intermediate coat comprises a material selected from the group consisting of carbon black, carbonaceous residue, carbonaceous residue precursor, or mixtures thereof.
Claim 5
Dependent Claim
56 words
The process of claim 1 wherein the heat-stable polymer of the primer, base coat and the topcoat comprises at least one material selected from the group consisting of a silicone, a polysulfide, a polymerized parahydroxy benzoic acid, a polysulfone, a polyimide, a salt of a polyamic acid, a polysulfonate, a polysulfonamide, a fluorocarbon, or mixtures thereof.
Claim 6
Dependent Claim
65 words
The process of claim 4 wherein the fluorocarbon of the primer, base coat and the topcoat comprises at least one material selected from the group consisting of a particulate polymer polymerized or copolymerized from monomers selected from one or more monoethylenically unsaturated hydrocarbon monomers and hydrocarbon ether monomers, said monomers being completely substituted with fluorine atoms or a combination of fluorine atoms and chlorine atoms.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |