US4897439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer-metal bonded composite and method of producing same
Assignee: Pfaudler Inc
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Filing: 1987-06-30
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Granted: 1990-01-30
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Expires: 2007-06-30
Abstract
Abstract A coating composition comprising a major amount of resin and a minor amount of a property-improving additive, said resin being: (A) a fluorocarbon resin selected from the group consisting of (1) perfluoroalkoxy tetrafluoroethylene copolymer resin (PFA), (2) ethylenechlorotrifluoroethylene copolymer resin (E-CTFE), (3) ethylenetetrafluoroethylene copolymer resin (E-TFE), (4) poly(vinylidine fluoride) resin (PVDF), (5) tetrafluoroethylene-hexafluoropropylene copolymer resin (FEP), (6) poly(chlorotrifluoroethylene) resin (CTFE), or a mixture of two or more of said fluorocarbon resins; or (B) a polyether resin selected from the group consisting of (7) polyethersulfone resin (PES), (8) polyether ketone resin (PEK) and (9) polyether ether ketone resin (PEEK) or a mixture of two or more of said polyether resins; said additive being: (C) a poly(phenylene sulfide) (PPS); or (D) an inorganic crystalline ceramic powder and/or fluorocarbon resin when said resin is a polyether of (B) above; or (E) an inorganic material selected from the group consisting of a nitride, an oxide, a diboride, and a carbide of silicon, of zirconium, of tungsten or of boron, or a polyether when said resin is a fluorocarbon of (A) above. Coatings and articles including a fused form of said composition and a method for forming said fused composition.
Inventors
- 👤 Steven E. Rau
- 👤 Robert Roberts
- 👤 Kevin P. Pochopien
- 👤 Charles W. Paul
- 👤 Royce A. Butler
- 👤 Allan J. Mackinlay
- 👤 Harris L. Morris
- 👤 Raymond J. Weinert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:11
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C08; C08K; C08K3/00; C08K3/01; C08K3/013; C08K3/10; C08K3/14; C09D181/00; C09D181/06; C08L; C08L81/00; C08L81/02; C08L81/06
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
172 words
A coating composition capable of flowing and fusing to form an adherent solid cohesive and nonporous material at ambient pressure and at a temperature of less than or about 700° F. and comprising a major amount of resin and a minor amount of property-improving additive, said resin being: (A) a fluorocarbon resin selected from the group consisting of (1) perfluoroalkoxy tetrafluoroethylene copolymer resin (PFA), (2) ethylenechlorotrifluoroethylene copolymer resin (E-CTFE), (3) ethylenetetrafluoroethylene copolymer resin (E-TFE), (4) poly(vinylidine fluoride) resin (PVDF), (5) poly(chlorotrifluoroethylene resin (CTFE), or a mixture of two or more of said fluorocarbon resins; said additive being one or a mixture of the following: (B) a polyether resin selected from the group consisting of (7) polyethersulfone resin (PES), (8) polyether ketone resin (PEK) and (9) polyether ether ketone resin (PEEK) or a mixture or two or more of said polyether resins; (C) a poly(phenylene sulfide) (PPS); or (D) an inorganic crystalline material selected from the group consisting of a nitride, a diboride, and silicon carbide, zirconium carbide, tungsten carbide or boron carbide.
Claim 2
Dependent Claim
172 words
A coating composition capable of flowing and fusing to form an adherent solid cohesive and nonporous material at ambient pressure and at a temperature of less than or about 700° F. and comprising a major amount of resin and a minor amount of property-improving additive, said resin being: (A) a fluorocarbon resin selected from the group consisting of (1) perfluoroalkoxy tetrafluoroethylene copolymer resin (PFA), (2) ethylenechlorotrifluoroethylene copolymer resin (E-CTFE), (3) ethylenetetrafluoroethylene copolymer resin (E-TFE), (4) poly(vinylidine fluoride) resin (PVDF), (5) poly(chlorotrifluoroethylene resin (CTFE), or a mixture of two or more of said fluorocarbon resins; said additive being one or a mixture of the following: (B) a polyether resin selected from the group consisting of (7) polyethersulfone resin (PES), (8) polyether ketone resin (PEK) and (9) polyether ether ketone resin (PEEK) or a mixture or two or more of said polyether resins; (C) a poly(phenylene sulfide) (PPS); or (D) an inorganic crystalline material selected from the group consisting of a nitride, a diboride, and silicon carbide, zirconium carbide, tungsten carbide or boron carbide.
Claim 3
Dependent Claim
12 words
A composition according to claim 1 wherein said (A) resin is PFA.
Claim 4
Dependent Claim
16 words
A composition according to claim 1 or 2 wherein said additive is an additive of (D).
Claim 5
Dependent Claim
14 words
A composition according to claim 3 wherein said (D) additive is said inorganic material.
Claim 6
Dependent Claim
12 words
A composition according to claim 4 wherein said material is silicon carbide.
Claim 7
Dependent Claim
17 words
A composition according to claim 1 comprising about 1 to about 40 wt. % of said additive.
Claim 8
Dependent Claim
16 words
A composition according to claim 1 comprising about 1 to 25 wt. % of said additive.
Claim 9
Dependent Claim
17 words
A composition according to claim 1 comprising about 2 to about 5 wt. % of said additive.
Claim 10
Dependent Claim
18 words
A coating composition according to claim 1 which is capable of being repeatedly fused without being substantially degraded.
Claim 11
Dependent Claim
65 words
A coating composition capable of flowing and fusing to form an adherent solid cohesive and nonporous material at ambient pressure and at a fusion temperature of less than about 700° F. and, comprising perfluoroalkoxy tetrafluoroethylene copolymer (PFA) resin solids and an inorganic crystalline material selected from the group consisting of a nitride, a diboride, molybdenum silicide, silicon carbide, zirconium carbide, tungsten carbide and boron carbide.
Claim 12
Dependent Claim
65 words
A coating composition capable of flowing and fusing to form an adherent solid cohesive and nonporous material at ambient pressure and at a fusion temperature of less than about 700° F. and, comprising perfluoroalkoxy tetrafluoroethylene copolymer (PFA) resin solids and an inorganic crystalline material selected from the group consisting of a nitride, a diboride, molybdenum silicide, silicon carbide, zirconium carbide, tungsten carbide and boron carbide.
Claim 13
Dependent Claim
19 words
A coating composition according to claim 10 wherein said inorganic material is present in an effective fusion temperature-lowering amount.
Claim 14
Dependent Claim
22 words
A coating composition according to claim 11 wherein said inorganic material lowers the fusion temperature of said composition by about 25° F.
Claim 15
Dependent Claim
22 words
A coating composition according to claim 12 which is capable of being heated repeatedly to its fusion temperature without being substantially degraded.
Claim 16
Dependent Claim
31 words
A coating composition according to claim 10, 11, 12 or 13 including about 70 to about 99.5 wt % PFA and about 0.5 to about 20 wt % of silicon carbide.
Claim 17
Dependent Claim
20 words
A coating composition according to claim 14 including about 98 wt % PFA and about 2 wt % silicon carbide.
Claim 18
Dependent Claim
12 words
A coating composition according to claim 10 consisting of solid particulate materials.
Claim 19
Dependent Claim
34 words
A coating composition according to claim 10 wherein said inorganic crystalline material is selected from the group consisting of silicon nitride, boron nitride, titanium diboride, aluminum diboride, silicon carbide, tungsten carbide and molybdenum disilicide.
Claim 20
Dependent Claim
180 words
A coating composition capable of flowing and fusing to form an adherent solid cohesive and nonporous material at ambient pressure and at a temperature of less than or about 700° F. and consisting essentially of a major amount of resin and a minor amount of a property-improving additive, said resin being: (A) a fluorocarbon resin selected from the group consisting of (1) perfluoroalkoxy tetrafluoroethylene copolymer resin (PFA), (2) ethylenechlorotrifluoroethylene copolymer resin (E-CTFE), (3) ethylenetetrafluoroethylene copolymer resin (E-TFE), (4) poly(vinylidine fluoride) resin (PVDF), (5) tetrafluoroethylene-hexafluoropropylene copolymer resin (FEP), (6) poly(chlorotrifluoroethylene) resin (CTFE), or a mixture of two or more of said fluorocarbon resins; said additive being one or a mixture of the following: (B) a polyether resin selected from the group consisting of (7) polyethersulfone resin (PES), (8) polyether ketone resin (PEK) and (9) polyether ether ketone resin (PEEK) or a mixture or two or more of said polyether resins; (C) a poly(phenylene sulfide) (PPS); or (D) an inorganic crystalline material selected from the group consisting of a nitride, a diboride, and silicon carbide, zirconium carbide, tungsten carbide or boron carbide.
Claim 21
Dependent Claim
180 words
A coating composition capable of flowing and fusing to form an adherent solid cohesive and nonporous material at ambient pressure and at a temperature of less than or about 700° F. and consisting essentially of a major amount of resin and a minor amount of a property-improving additive, said resin being: (A) a fluorocarbon resin selected from the group consisting of (1) perfluoroalkoxy tetrafluoroethylene copolymer resin (PFA), (2) ethylenechlorotrifluoroethylene copolymer resin (E-CTFE), (3) ethylenetetrafluoroethylene copolymer resin (E-TFE), (4) poly(vinylidine fluoride) resin (PVDF), (5) tetrafluoroethylene-hexafluoropropylene copolymer resin (FEP), (6) poly(chlorotrifluoroethylene) resin (CTFE), or a mixture of two or more of said fluorocarbon resins; said additive being one or a mixture of the following: (B) a polyether resin selected from the group consisting of (7) polyethersulfone resin (PES), (8) polyether ketone resin (PEK) and (9) polyether ether ketone resin (PEEK) or a mixture or two or more of said polyether resins; (C) a poly(phenylene sulfide) (PPS); or (D) an inorganic crystalline material selected from the group consisting of a nitride, a diboride, and silicon carbide, zirconium carbide, tungsten carbide or boron carbide.
References Cited (Backward Citations)
US2732357A
Cited
US2954359A
Cited
US3824115A
Cited
US3856736A
Cited
US3920793A
Cited
US3970627A
Cited
US3981945A
Cited
US4154876A
Cited
US4090993A
Cited
US4166536A
Cited
US4248763A
Cited
US4252859A
Cited
JPS57195149A
Cited
US4425448A
Cited
US4478965A
Cited
US4578427A
Cited
US4613645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-29 | 1993-07-31 | 1994-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-29 | 1997-07-31 | 1998-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-29 | 2001-07-31 | 2002-01-30 | $7700.00 | Window Closed / Lapsed |