US5798158A
Expired / Lapsed
US
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Layered molding including fluoroplastic layer crosslinked with rubber layer
Assignee: Toyoda Gosei Co Ltd
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Filing: 1995-10-25
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Granted: 1998-08-25
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Expires: 2015-10-25
Abstract
Abstract A layered molding and method for making the same which has excellent antipermeability to gasoline. The layered molding is defined by a fluoroplastic and an epichlorohydrin rubber. The fluoroplastic is a copolymer formed from at least two precursors selected from the group consisting of hexafluoropropylene, tetrafluoroethylene, and vinylidene fluoride, which are selected within a plotted range to preferably form a binary or tertiary composition. The epichlorohydrin rubber contains organic phosphonium. The resulting layered molding does not require an adhesive agent.
Inventors
- 👤 Masaki Koike
- 👤 Atsushi Suzuki
- 👤 Daisuke Tsutsumi
- 👤 Masayoshi Ichikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:30
CPC Classifications
B; B32; B32B; B32B25/00; B32B25/04; B32B25/08; B32B1/00; B32B1/08; B32B25/10; B32B25/14; C; C08; C08J; C08J5/00; C08J5/12; F; F16; F16L; F16L11/00; F16L11/04; F16L11/06; F16L11/08; F16L11/085; B32B2262/00; B32B2262/02; B32B2262/0276; B32B2305/00; B32B2305/38; B32B2307/00; B32B2307/70; B32B2307/726; B32B2307/7265; B32B2597/00; C08J2327/00; C08J2327/02; C08J2327/12; C08J2371/00; C08J2371/02; C08J2371/03; C08J2377/00; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1386; Y10T428/139; Y10T428/31504; Y10T428/3154; Y10T428/31551; Y10T428/31569; Y10T428/31826; Y10T428/31833; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
133 words
A layered molding comprising: a rubber layer formed from a base polymer consisting essentially of at least one epichlorohydrin rubber, said rubber layer containing an organic phosphonium; and fluoroplastic layer disposed against and crosslinked with said rubber layer at an interfacial boundary positioned therebetween, said fluoroplastic layer consisting essentially of a copolymer composition that contains at least two precursors selected from the group consisting of hexafluoropropylene (HFP), tetrafluoroethylene (TFE), and vinylidene fluoride (VDF), wherein an amount of each precursor in the composition is selected within a range defined by plotting coordinates A, B, C, D, E, F, and G: ______________________________________
HFP TFE VDF
______________________________________
A: 60 0 40
B: 40 25 35
C: 18 32 50
D: 25 0 75
E: 0 0 100
F: 0 100 0
G: 100 0 0
______________________________________
Claim 2
Dependent Claim
133 words
A layered molding comprising: a rubber layer formed from a base polymer consisting essentially of at least one epichlorohydrin rubber, said rubber layer containing an organic phosphonium; and fluoroplastic layer disposed against and crosslinked with said rubber layer at an interfacial boundary positioned therebetween, said fluoroplastic layer consisting essentially of a copolymer composition that contains at least two precursors selected from the group consisting of hexafluoropropylene (HFP), tetrafluoroethylene (TFE), and vinylidene fluoride (VDF), wherein an amount of each precursor in the composition is selected within a range defined by plotting coordinates A, B, C, D, E, F, and G: ______________________________________
HFP TFE VDF
______________________________________
A: 60 0 40
B: 40 25 35
C: 18 32 50
D: 25 0 75
E: 0 0 100
F: 0 100 0
G: 100 0 0
______________________________________
Claim 3
Dependent Claim
17 words
A layered molding according to claim 1, wherein said layered molding is free of an adhesion agent.
Claim 4
Dependent Claim
19 words
A layered molding according to claim 1, wherein the organic phosphonium is phosphonium benzo triazolete or phosphonium tolyl triazolete.
Claim 5
Dependent Claim
54 words
A layered molding according to claim 2, further comprising a threaded layer and a second rubber layer, wherein said threaded layer is positioned adjacent said rubber layer and said second rubber layer is positioned adjacent said threaded layer such that said threaded layer is interposed between said rubber layer and said second rubber layer.
Claim 6
Dependent Claim
122 words
A layered molding comprising: a rubber layer formed from a base polymer consisting essentially of at least one epichlorohydrin rubber; an organic phosphonium layer; and a fluoroplastic layer crosslinked with said rubber layer, said fluoroplastic layer consisting essentially of a copolymer composition that contains at least two precursors selected from the group consisting of hexafluoropropylene (HFP), tetrafluoroethylene (TFE), and vinyliden fluoride (VDF), wherein an amount of each precursor in the composition is selected within a range defined by plotting coordinates A, B, C, D, E, F, and G: ______________________________________
HFP TFE VDF
______________________________________
A: 60 0 40
B: 40 25 35
C: 18 32 50
D: 25 0 75
E: 0 0 100
F: 0 100 0
G: 100 0 0
______________________________________
Claim 7
Dependent Claim
122 words
A layered molding comprising: a rubber layer formed from a base polymer consisting essentially of at least one epichlorohydrin rubber; an organic phosphonium layer; and a fluoroplastic layer crosslinked with said rubber layer, said fluoroplastic layer consisting essentially of a copolymer composition that contains at least two precursors selected from the group consisting of hexafluoropropylene (HFP), tetrafluoroethylene (TFE), and vinyliden fluoride (VDF), wherein an amount of each precursor in the composition is selected within a range defined by plotting coordinates A, B, C, D, E, F, and G: ______________________________________
HFP TFE VDF
______________________________________
A: 60 0 40
B: 40 25 35
C: 18 32 50
D: 25 0 75
E: 0 0 100
F: 0 100 0
G: 100 0 0
______________________________________
Claim 8
Dependent Claim
17 words
A layered molding according to claim 5, wherein said layered molding is free of an adhesion agent.
Claim 9
Dependent Claim
19 words
A layered molding according to claim 5, wherein the organic phosphonium is phosphonium benzo triazolete or phosphonium tolyl triazolete.
Claim 10
Dependent Claim
54 words
A layered molding according to claim 6, further comprising a threaded layer and a second rubber layer, wherein said threaded layer is positioned adjacent said rubber layer, and said second rubber layer is positioned adjacent said threaded layer such that said threaded layer is interposed between said rubber layer and said second rubber layer.
Claim 11
Dependent Claim
56 words
A tubular member comprising a layer molding according to claim 1, wherein the rubber layer defines an inner annular layer having an outer surface, wherein the fluoroplastic layer defines an outer annular layer having an inner surface, and wherein the outer surface of the inner annular layer interfaces the inner surface of the outer annular layer.
Claim 12
Dependent Claim
28 words
A tubular member according to claim 9, further comprising a threaded layer disposed over said outer annular layer, and a second epiclorohydrine rubber layer surrounding said threaded layer.
Claim 13
Dependent Claim
44 words
A tubular member comprising a layer molding according to claim 5, wherein the rubber layer defines an inner annular layer, wherein the fluoroplastic layer defines an outer annular layer, and wherein the organic phosphonium layer is disposed between the inner and outer annular layers.
Claim 14
Dependent Claim
28 words
A tubular member according to claim 11, further comprising a threaded layer disposed over said outer annular layer, and a second epiclorohydrine rubber layer surrounding said threaded layer.
Claim 15
Dependent Claim
67 words
A layered molding according to claim 1, wherein the rubber layer defines an inner annular layer having an outer surface, wherein the fluoroplastic layer defines an outer annular layer having an inner surface, and wherein the outer surface of the inner annular layer interfaces the inner surface of the outer annular layer and thereby defines at least a portion of a tubular configuration of said layered molding.
Claim 16
Dependent Claim
28 words
A layered molding according to claim 13, further comprising a threaded layer disposed over said outer annular layer, and a second epichlorohydrin rubber layer surrounding said threaded layer.
Claim 17
Dependent Claim
40 words
A layered molding according to claim 5, wherein the rubber layer defines an inner annular layer, wherein the fluoroplastic layer defines an outer annular layer, and wherein the organic phosphonium layer is disposed between the inner and outer annular layers.
Claim 18
Dependent Claim
28 words
A layered molding according to claim 15, further comprising a threaded layer disposed over said outer annular layer, and a second epichlorohydrin rubber layer surrounding said threaded layer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-24 | 2002-02-23 | 2002-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-24 | 2006-02-23 | 2006-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-24 | 2010-02-23 | 2010-08-25 | $7700.00 | Window Closed / Lapsed |