Patent US8007506B2 successfully refreshed from Google Patents.
US3989873A
Expired / Lapsed
US
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Fluoropolymer primer compositions
Assignee: Solvay Solexis Inc
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Filing: 1975-03-27
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Granted: 1976-11-02
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Expires: 1995-03-27
Abstract
Abstract This invention relates to a composition comprising a copolymer of ethylene and a halogenated comonomer selected from the group consisting of tetrafluoroethylene, chlorotrifluoroethylene and mixtures thereof and 0 to 10 mol percent of an additional monomer selected from the group consisting of 3,3,3-trifluoro-2-trifluoromethyl propene, a vinyl monomer which is free of telogenic activity and which provides a side chain having at least two carbon atoms, said side chain being aromatic or having its elements bonded together by a single bond only, or mixtures thereof, and containing from about 1 to about 40% by weight of an oxide of cobalt, nickel, manganese, chromium, tin, molybdenum, tungsten or mixtures thereof. Such compositions are particularly useful as a primer coating for substrates such as metals in conjunction with an overlying layer of such copolymers. Coated articles are provided which comprise a substrate, a primer coating fused thereon and comprising such composition and an outer coating of similar copolymers fused to the primer coating.
Inventors
- 👤 Arthur B. Robertson
- 👤 Robert J. Schaffhauser
- 👤 Elmer C. Lupton
- 👤 William A. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:43
CPC Classifications
C; C09; C09D; C09D123/00; C09D123/02; C09D123/04; C09D123/08; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C09D127/00; C09D127/02; C09D127/12; C09D5/00; C09D5/002; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
230 words
An article of manufacture which comprises a substrate, a primer coating fused thereon and comprising a copolymer of about 40 to 60 mol percent of ethylene, about 60 to 40 mol percent of a halogenated comonomer selected from the group consisting of tetrafluoroethylene, chlorotrifluoroethylene and mixtures thereof and 0 to 10 mol percent of an additional monomer selected from the group consisting of 3,3,3-trifluoro-2-trifluoromethyl propene, a vinyl monomer which is free of telogenic activity and which provides a side chain having at least two carbon atoms, said side chain being aromatic or having its elements bonded together by a single bond only, or mixtures thereof, and containing from about 1 to about 40 percent by weight of an oxide of cobalt, nickel, manganese, chromium, tin, molybdenum, tungsten or mixtures thereof, and an outer coating fused to said primer coating and comprising a copolymer of about 40 to 60 mol percent ethylene, about 60 to 40 mol percent of a halogenated comonomer selected from the group consisting of tetrafluoroethylene, chlorotrifluoroethylene and mixtures thereof and 0 to 10 mol percent of an additional monomer selected from the group consisting of 3,3,3-trifluoro-2-trifluoromethyl propene, a vinyl monomer which is free of telogenic activity and which provides a side chain having at least two carbon atoms, said side chain being aromatic or having its elements bonded together by a single bond only, or mixtures thereof.
Claim 2
Dependent Claim
230 words
An article of manufacture which comprises a substrate, a primer coating fused thereon and comprising a copolymer of about 40 to 60 mol percent of ethylene, about 60 to 40 mol percent of a halogenated comonomer selected from the group consisting of tetrafluoroethylene, chlorotrifluoroethylene and mixtures thereof and 0 to 10 mol percent of an additional monomer selected from the group consisting of 3,3,3-trifluoro-2-trifluoromethyl propene, a vinyl monomer which is free of telogenic activity and which provides a side chain having at least two carbon atoms, said side chain being aromatic or having its elements bonded together by a single bond only, or mixtures thereof, and containing from about 1 to about 40 percent by weight of an oxide of cobalt, nickel, manganese, chromium, tin, molybdenum, tungsten or mixtures thereof, and an outer coating fused to said primer coating and comprising a copolymer of about 40 to 60 mol percent ethylene, about 60 to 40 mol percent of a halogenated comonomer selected from the group consisting of tetrafluoroethylene, chlorotrifluoroethylene and mixtures thereof and 0 to 10 mol percent of an additional monomer selected from the group consisting of 3,3,3-trifluoro-2-trifluoromethyl propene, a vinyl monomer which is free of telogenic activity and which provides a side chain having at least two carbon atoms, said side chain being aromatic or having its elements bonded together by a single bond only, or mixtures thereof.
Claim 3
Dependent Claim
17 words
An article in accordance with claim 15 wherein said halogenated comonomer of said primer coating is chlorotrifluoroethylene.
Claim 4
Dependent Claim
26 words
An article in accordance with claim 2 wherein said copolymer of said primer coating comprises from about 0.1 to about 10 mol percent of 3,3,3-trifluoromethyl propene.
Claim 5
Dependent Claim
24 words
An article in accordance with claim 3 wherein said oxide is selected from the group consisting of cobalt oxide, nickel oxide and manganese oxide.
Claim 6
Dependent Claim
14 words
An article in accordance with claim 2 wherein said cobalt oxide is cobaltic oxide.
Claim 7
Dependent Claim
28 words
An article in accordance with claim 5 wherein said cobaltic oxide is present in said primer coating in an amount of about 15 to 25 percent by weight.
Claim 8
Dependent Claim
26 words
An article in accordance with claim 6 wherein said copolymer of said outer coating comprises from about 0.1 to about 10 mol percent of 3,3,3-trifluoro-2-trifluoromethyl propene.
Claim 9
Dependent Claim
13 words
An article in accordance with claim 7 wherein said substrate is a metal.
Claim 10
Dependent Claim
26 words
An article in accordance with claim 1 wherein said copolymers of said primer and outer coatings comprise about equimolar contents of ethylene and said halogenated comonomer.
Claim 11
Dependent Claim
13 words
An article in accordance with claim 9 wherein said oxide is nickel oxide.
Claim 12
Dependent Claim
13 words
An article in accordance with claim 9 wherein said oxide is manganese oxide.
Claim 13
Dependent Claim
17 words
An article in accordance with claim 1 wherein said halogenated comonomer of said primer coating is tetrafluoroethylene.
Claim 14
Dependent Claim
17 words
An article in accordance with claim 12 wherein said halogenated comonomer of said outer coating is tetrafluoroethylene.
Claim 15
Dependent Claim
13 words
An article in accordance with claim 12 wherein said oxide is cobalt oxide.
Claim 16
Dependent Claim
27 words
An article in accordance with claim 1 wherein said copolymer of said primer layer comprises from about 0.1 to about 10 mol percent of said vinyl monomer.
Claim 17
Dependent Claim
15 words
An article in accordance with claim 15 wherein said vinyl monomer is perfluoropropyl perfluorovinyl ether.
References Cited (Backward Citations)
US2979418A
Cited
US2961341A
Cited
US3655426A
Cited
US3917895A
Cited
US3933773A
Cited
US3906060A
Cited
US3946136A
Cited
US3847881A
Cited
US3936569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |