US4005157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating compositions for metal substrates based on ethylene-tetrafluoroethylene copolymers
Assignee: Montedison SpA
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Filing: 1975-04-07
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Granted: 1977-01-25
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Expires: 1995-04-07
Abstract
Abstract Coating compositions for metal substrates comprising a mixture of ethylene-tetrafluoroethylene copolymers, said mixture including an ethylene-tetrafluoroethylene copolymer having 50-60 mol % of tetrafluoroethylene with a melting point from about 250 DEG C to about 315 DEG C and an ethylene-tetrafluoroethylene copolymer having more than 60 or less than 45 mol % of tetrafluoroethylene with a melting point from about 180 DEG C to about 285 DEG C and a latent solvent. The composition may optionally include a fluidizing solvent and various pigments, inert fillers and other additives.
Inventors
- 👤 Andrea Mattiussi
- 👤 Mario Modena
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:03
CPC Classifications
C; C09; C09D; C09D123/00; C09D123/02; C09D123/04; C09D123/08; C09D123/0846; C09D123/0892; C09D127/00; C09D127/02; C09D127/12; C09D127/18; C08; C08L; C08L2205/00; C08L2205/02; C08L27/00; C08L27/02; C08L27/12; C08L27/18; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
83 words
A coating composition comprising an ethylene-tetrafluoroethylene copolymer mixture and at least one latent solvent, said ethylene-tetrafluoroethylene copolymer mixture being constituted by a. 20-90% of at least one ethylene-tetrafluoroethylene copolymer having a melting point from about 250° C. to about 315° C. and containing between 52 and 58 mol % of chemically combined tetrafluoroethylene, and b. 80-10% of at least one ethylene-tetrafluoroethylene copolymer having a melting point from about 180° C. to about 285° C. and containing 68 mol % of chemically combined tetrafluoroethylene.
Claim 2
Dependent Claim
83 words
A coating composition comprising an ethylene-tetrafluoroethylene copolymer mixture and at least one latent solvent, said ethylene-tetrafluoroethylene copolymer mixture being constituted by a. 20-90% of at least one ethylene-tetrafluoroethylene copolymer having a melting point from about 250° C. to about 315° C. and containing between 52 and 58 mol % of chemically combined tetrafluoroethylene, and b. 80-10% of at least one ethylene-tetrafluoroethylene copolymer having a melting point from about 180° C. to about 285° C. and containing 68 mol % of chemically combined tetrafluoroethylene.
Claim 3
Dependent Claim
32 words
A coating composition according to claim 1, and being capable of undergoing film formation upon being heated at a temperature between 260° C. and 300° C., for between 1 and 2 minutes.
Claim 4
Dependent Claim
15 words
A coating composition according to claim 1, and further comprising at least one fluidizing solvent.
Claim 5
Dependent Claim
14 words
A coating composition according to claim 1, and further comprising at least one pigment.
Claim 6
Dependent Claim
14 words
A coating composition according to claim 3, and further comprising at least one pigment.
Claim 7
Dependent Claim
15 words
A coating composition according to claim 1, and further comprising at least one inert filler.
Claim 8
Dependent Claim
15 words
A coating composition according to claim 3, and further comprising at least one inert filler.
Claim 9
Dependent Claim
26 words
A coating composition according to claim 1, and further comprising at least one additive selected from the group consisting of surfactants, stabilizers, anti-oxidants and ultraviolet absorbers.
Claim 10
Dependent Claim
26 words
A coating composition according to claim 3, and further comprising at least one additive selected from the group consisting of surfactants, stabilizers, anti-oxidants and ultraviolet absorbers.
Claim 11
Dependent Claim
31 words
A coating composition according to claim 1, wherein the ethylene-tetrafluoroethylene copolymer having a melting point from about 250° C. to about 315° C. contains 55 mol % of chemically combined tetrafluoroethylene.
References Cited (Backward Citations)
US2412960A
Cited
US3906060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |