Patent US3209585A successfully refreshed from Google Patents.
US4287112A
Expired / Lapsed
US
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Coating of poly(arylene sulfide), fluoropolymer and aluminum flake
Assignee: EIDP Inc
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Filing: 1980-01-10
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Granted: 1981-09-01
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Expires: 2000-01-10
Abstract
Abstract A coating composition of poly(arylene sulfide), fluoropolymer and aluminum flake, in a liquid carrier which is either aqueous or organic, provides durable coatings especially useful in bakeware.
Inventors
- 👤 Jacques M. L. Berghmans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:56
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C09D127/18; C09D181/00; C09D181/02; C08; C08L; C08L81/00; C08L81/02; C08L81/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
71 words
A coating composition comprising, in weight percentage ranges based on the solids content, about: (a) 95-35% poly(arylene sulfide) resin, (b) 5-55% fluoropolymer 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, (c) 0.5-20% aluminum flake, and (d) 0-40% titanium dioxide pigment, dispersed in liquid carrier.
Claim 2
Dependent Claim
71 words
A coating composition comprising, in weight percentage ranges based on the solids content, about: (a) 95-35% poly(arylene sulfide) resin, (b) 5-55% fluoropolymer 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, (c) 0.5-20% aluminum flake, and (d) 0-40% titanium dioxide pigment, dispersed in liquid carrier.
Claim 3
Dependent Claim
15 words
The coating composition of claim 1 wherein the poly(arylene sulfide) of (a) is poly(phenylene sulfide).
Claim 4
Dependent Claim
12 words
The coating composition of claim 2 wherein the liquid carrier is aqueous.
Claim 5
Dependent Claim
12 words
The coating composition of claim 2 wherein the liquid carrier is organic.
Claim 6
Dependent Claim
33 words
The coating composition of claim 2 containing, by weight, about: (a) 66.6% poly(phenylene sulfide) resin, (b) 17% polytetrafluoroethylene, (c) 3.65% aluminum flake, and (d) 12.75% titanium dioxide pigment, dispersed in organic liquid carrier.
Claim 7
Dependent Claim
13 words
The coating composition of claim 2 wherein the fluoropolymer of (b) is polytetrafluoroethylene.
Claim 8
Dependent Claim
19 words
The coating composition of claim 2 wherein the fluoropolymer of (b) is a perfluorinated copolymer of hexafluoropropylene and tetrafluoroethylene.
Claim 9
Dependent Claim
28 words
The coating composition of claim 2 wherein the fluoropolymer of (b) is a copolymer of tetrafluoroethylene and hydrocarbon ether monomers which have been completely substituted with fluorine atoms.
Claim 10
Dependent Claim
36 words
An article of cookware having a substrate and a coating produced by applying a coating composition of claim 1 to the substrate, and heating the coated substrate to remove the liquid carrier and coalesce the coating.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-31 | 1985-03-02 | 1985-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-31 | 1989-03-02 | 1989-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-31 | 1993-03-02 | 1993-09-01 | $7700.00 | Window Closed / Lapsed |