Patent US6080487A successfully refreshed from Google Patents.
US6080487A
Expired / Lapsed
US
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Method of improving adhesion between a fluoropolymer and a substrate
Assignee: 3M Innovative Properties Co
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Filing: 1996-08-26
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Granted: 2000-06-27
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Expires: 2016-08-26
Abstract
Abstract A multi-layer article comprising a substrate and a dehydrofluorinated fluoropolymer, wherein the dehydrofluorinated polymer contains substantially no grafted adhesion-promoting groups, and the dehydrofluorinated fluoropolymer contains sufficient carbon-carbon unsaturation to increase the adhesion between the dehydrofluorinated fluoropolymer and the substrate.
Inventors
- 👤 William D. Coggio
- 👤 Timothy M. Dietz
- 👤 Daniel R. Fronek
- 👤 Tatsuo Fukushi
- 👤 Constance J. Nelson
- 👤 Douglas S. Parker
- 👤 Trang D. Pham
- 👤 Keizo Yamanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:44
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B7/00; B32B7/04; C; C08; C08F; C08F8/00; C08F8/26; C08J; C08J5/00; C08J5/18; C08J2327/00; C08J2327/02; C08J2327/12; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31551; Y10T428/31721; Y10T428/31725; Y10T428/3175; Y10T428/31855; Y10T428/31909; Y10T428/31928
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
103 words
A method of increasing the bond strength between a fluoropolymer and a substrate, the method comprising the steps of: providing a fluoropolymer; dehydrofluorinating the fluoropolymer by a method that produces unsaturation of the fluoropolymer, while resulting in substantially no adhesion-promoting groups being grafted onto the fluoropolymer; and directly contacting the dehydrofluorinated fluoropolymer to the hydrocarbon without the application of an adhesion-enhancing chemical to either the surface of the substrate or the surface of the dehydrofluorinated fluoropolymer, wherein the dehydrofluorinated fluoropolymer is sufficiently dehydrofluorinated to increase the bond strength between the substrate and the fluoropolymer, as compared to a fluoropolymer that is not dehydrofluorinated.
Claim 2
Independent Claim
103 words
A method of increasing the bond strength between a fluoropolymer and a substrate, the method comprising the steps of: providing a fluoropolymer; dehydrofluorinating the fluoropolymer by a method that produces unsaturation of the fluoropolymer, while resulting in substantially no adhesion-promoting groups being grafted onto the fluoropolymer; and directly contacting the dehydrofluorinated fluoropolymer to the hydrocarbon without the application of an adhesion-enhancing chemical to either the surface of the substrate or the surface of the dehydrofluorinated fluoropolymer, wherein the dehydrofluorinated fluoropolymer is sufficiently dehydrofluorinated to increase the bond strength between the substrate and the fluoropolymer, as compared to a fluoropolymer that is not dehydrofluorinated.
Claim 3
Dependent Claim
25 words
The method of claim 1, wherein the fluoropolymer is comprised of interpolymerized units derived from one or more of vinylidene fluoride, hexafluoropropylene, tetrafluoroethylene, and chlorotrifluoroethylene.
Claim 4
Dependent Claim
26 words
The method of claim 2, wherein the fluoropolymer is comprised of interpolymerized units derived from monomers further including one or more of ethylene, propylene, or butylene.
Claim 5
Dependent Claim
24 words
The method of claim 1, wherein the fluoropolymer is comprised of interpolymerized units derived from monomers consisting essentially of tetrafluoroethylene, polypropylene, and vinylidene fluoride.
Claim 6
Dependent Claim
25 words
The method of claim 1, wherein the method comprises the steps of dehydrofluorinating the fluoropolymer, and then forming the dehydrofluorinated fluoropolymer into a fluoropolymer film.
Claim 7
Dependent Claim
33 words
The method of claim 1, wherein the method comprises the steps of forming the fluoropolymer into a fluoropolymer film, followed by a dehydrofluorination step wherein a surface of the fluoropolymer film is dehydrofluorinated.
Claim 8
Dependent Claim
37 words
The method of claim 6, wherein during the dehydrofluorination step, fewer than 0.5 mole percent adhesion-promoting groups are grafted onto the fluoropolymer, based on the total number of interpolymerized monomeric units used to produce the dehydrofluorinated fluoropolymer.
Claim 9
Dependent Claim
35 words
The method of claim 1, wherein the dehydrofluorination step produces a fluoropolymer having from 0.2 to 20 mole percent dehydrofluorination, based on the total number of interpolymerized monomeric units used to produce the dehydrofluorinated fluoropolymer.
Claim 10
Dependent Claim
35 words
The method of claim 1, wherein the dehydrofluorination step produces a fluoropolymer having from 0.2 to 15 mole percent dehydrofluorination, based on the total number of interpolymerized monomeric units used to produce the dehydrofluorinated fluoropolymer.
Claim 11
Dependent Claim
37 words
The method of claim 1, wherein during the dehydrofluorination step, less than 2 mole percent adhesion-promoting groups are grafted onto the fluoropolymer, based on the total number of interpolymerized monomeric units used to produce the dehydrofluorinated fluoropolymer.
Claim 12
Dependent Claim
40 words
The method of claim 1, wherein the substrate contains no acrylate or methacrylate, and comprises at least one material selected from the group consisting of a polyamide, a polyurethane, a polyimide, a polyolefin, and a carboxyl-, anhydride-, or imide-functional polyolefin.
Claim 13
Dependent Claim
22 words
The method of claim 1, wherein during the contacting step, the dehydrofluorinated fluoropolymer is contacted with the substrate by a lamination process.
Claim 14
Dependent Claim
27 words
The method of claim 1, wherein a surface of the fluoropolymer is contacted with a second material to produce a multi-layer article comprising three or more layers.
Claim 15
Dependent Claim
26 words
The method of claim 13, wherein the second material comprises a polymeric material chosen from the group consisting of a hydrocarbon, a fluorocarbon, and mixtures thereof.
Claim 16
Dependent Claim
23 words
The method of claim 1, wherein during the contacting step, the dehydrofluorinated fluoropolymer is contacted with the substrate by a multi-layer extrusion process.
Claim 17
Dependent Claim
24 words
The method of claim 15, wherein the multi-layer extrusion process is a multi-layer extrusion process producing a multi-layer article comprising three or more layers.
Claim 18
Dependent Claim
11 words
The method of claim 1 wherein the substrate is a polyolefin.
Claim 19
Dependent Claim
11 words
The method of claim 1 wherein the substrate is a polyimide.
Claim 20
Dependent Claim
39 words
A multi-layer article comprising a substrate and a dehydrofluorinated fluoropolymer, wherein the dehydrofluorinated fluoropolymer contains substantially no grafted adhesion-promoting groups, and the dehydrofluorinated fluoropolymer contains sufficient carbon-carbon unsaturation to increase the adhesion between the dehydrofluorinated fluoropolymer and the substrate.
Claim 21
Dependent Claim
39 words
A multi-layer article comprising a substrate and a dehydrofluorinated fluoropolymer, wherein the dehydrofluorinated fluoropolymer contains substantially no grafted adhesion-promoting groups, and the dehydrofluorinated fluoropolymer contains sufficient carbon-carbon unsaturation to increase the adhesion between the dehydrofluorinated fluoropolymer and the substrate.
Claim 22
Dependent Claim
26 words
The multi-layer article of claim 19, wherein the fluoropolymer is comprised of interpolymerized units derived from one or more of vinylidene fluoride, hexafluoropropylene, tetrafluoroethylene, or chlorotrifluoroethylene.
Claim 23
Dependent Claim
27 words
The multi-layer article of claim 20, wherein the fluoropolymer is comprised of interpolymerized units derived from monomers further including one or more of ethylene, propylene, or butylene.
Claim 24
Dependent Claim
25 words
The multi-layer article of claim 19, wherein the fluoropolymer is comprised of interpolymerized units derived from monomers consisting essentially of tetrafluoroethylene, polypropylene, and vinylidene fluoride.
Claim 25
Dependent Claim
33 words
The multi-layer article of claim 19, wherein the fluoropolymer contains from about 0.2 to 20 mole percent dehydrofluorination, based on the total amount of interpolymerized monomeric units used to produce the dehydrofluorinated fluoropolymer.
Claim 26
Dependent Claim
33 words
The multi-layer article of claim 19, wherein the fluoropolymer contains from about 0.2 to 15 mole percent dehydrofluorination, based on the total number of interpolymerized monomeric units used to produce the dehydrofluorinated fluoropolymer.
Claim 27
Dependent Claim
33 words
The multi-layer article of claim, 19, wherein the fluoropolymer contains fewer than 2 mole percent grafted adhesion-promoting groups, based on the total number of interpolymerized monomeric units used to produce the dehydrofluorinated fluoropolymer.
Claim 28
Dependent Claim
32 words
The multi-layer article of claim 19, wherein the fluoropolymer contains fewer than 0.5 percent grafted adhesion-promoting groups, based on the total number of interpolymerized monomeric units used to produce the dehydrofluorinated fluoropolymer.
Claim 29
Dependent Claim
42 words
The multi-layer article of claim 19, wherein the substrate contains no acrylate or methacrylate, and comprises at least one material chosen from of the group consisting of a polyamide, a polyurethane, a polyimide, a polyolefin, and a carboxyl-, anhydride-, or imide-functional polyolefin.
Claim 30
Dependent Claim
11 words
The article of claim 19 wherein the substrate is a polyolefin.
Claim 31
Dependent Claim
11 words
The article of claim 19 wherein the substrate is a polyimide.
Claim 32
Dependent Claim
61 words
A multi-layer article comprising a substrate and a dehydrofluorinated fluoropolymer, wherein the dehydrofluorinated polymer contains substantially no grafted adhesion-promoting groups, and the dehydrofluorinated fluoropolymer contains sufficient carbon-carbon unsaturation to increase the adhesion between the dehydrofluorinated fluoropolymer and the substrate, and further, wherein the dehydrofluorinated fluoropolymer directly contacts the substrate without an adhesion-enhancing chemical located between the dehydrofluorinated fluoropolymer and the substrate.
Claim 33
Dependent Claim
61 words
A multi-layer article comprising a substrate and a dehydrofluorinated fluoropolymer, wherein the dehydrofluorinated polymer contains substantially no grafted adhesion-promoting groups, and the dehydrofluorinated fluoropolymer contains sufficient carbon-carbon unsaturation to increase the adhesion between the dehydrofluorinated fluoropolymer and the substrate, and further, wherein the dehydrofluorinated fluoropolymer directly contacts the substrate without an adhesion-enhancing chemical located between the dehydrofluorinated fluoropolymer and the substrate.
Claim 34
Dependent Claim
42 words
The multi-layer article of claim 30, wherein the substrate contains no acrylate or methacrylate, and comprises at least one material chosen from of the group consisting of a polyamide, a polyurethane, a polyimide, a polyolefin, and a carboxyl-, anhydride-, or imide-functional polyolefin.
Claim 35
Dependent Claim
12 words
The multi-layer article of claim 30 wherein the substrate is a polyolefin.
Claim 36
Dependent Claim
12 words
The multi-layer article of claim 30 wherein the substrate is a polyimide.
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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) | 2003-06-27 | 2003-12-27 | 2004-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-06-27 | 2007-12-27 | 2008-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-06-27 | 2011-12-27 | 2012-06-27 | $7700.00 | Window Closed / Lapsed |