US5658670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-layer compositions having a fluoropolymer layer
Assignee: 3M Innovative Properties Co
•
Filing: 1995-08-17
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Granted: 1997-08-19
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Expires: 2015-08-17
Abstract
Abstract A method for increasing the adhesion of a first layer comprising fluoropolymer to a second layer comprising a melt-processable, substantially non-fluorinated polymer is disclosed. The method comprises mixing, preferably in a melt, an aliphatic di- or polyamine of less than 1,000 molecular weight with the melt-processable, substantially non-fluorinated polymer. The resulting multi-layer compositions and articles comprising the composition are also disclosed.
Inventors
- 👤 Tatsuo Fukushi
- 👤 Paul J. Wang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:46
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1379; Y10T428/139; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/24868; Y10T428/24876; Y10T428/28; Y10T428/2852; Y10T428/2878; Y10T428/2891; Y10T428/2896; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
131 words
A method for increasing the adhesion of a first layer comprising fluoropolymer to a second layer comprising a melt-processable, substantially non-fluorinated polymer, comprising the steps of (A) mixing an aliphatic di- or polyamine of less than 1,000 molecular weight with a melt-processable composition comprising said substantially non-fluorinated polymer; (B) forming a multi-layer composite comprising a layer comprising the mixture resulting from step A and a layer comprising said fluoropolymer; wherein said two layers are in substantial contact, said fluoropolymer comprises interpolymerized units derived from vinylidene fluoride, said substantially non-fluorinated polymer is a polyamide, polyimide, polyurethane or a carboxyl, anhydride, or imide functional polyolefin, and said di- or polyamine is present in an amount sufficient to increase the adhesion between the two layers compared to composites prepared without said di- or polyamine.
Claim 2
Independent Claim
131 words
A method for increasing the adhesion of a first layer comprising fluoropolymer to a second layer comprising a melt-processable, substantially non-fluorinated polymer, comprising the steps of (A) mixing an aliphatic di- or polyamine of less than 1,000 molecular weight with a melt-processable composition comprising said substantially non-fluorinated polymer; (B) forming a multi-layer composite comprising a layer comprising the mixture resulting from step A and a layer comprising said fluoropolymer; wherein said two layers are in substantial contact, said fluoropolymer comprises interpolymerized units derived from vinylidene fluoride, said substantially non-fluorinated polymer is a polyamide, polyimide, polyurethane or a carboxyl, anhydride, or imide functional polyolefin, and said di- or polyamine is present in an amount sufficient to increase the adhesion between the two layers compared to composites prepared without said di- or polyamine.
Claim 3
Dependent Claim
21 words
The method of claim 1 wherein said mixing is done above the softening point or melting point of said hydrocarbon polymer.
Claim 4
Dependent Claim
15 words
The method of claim 1 wherein said forming step is co-extrusion of said two layers.
Claim 5
Dependent Claim
18 words
The method of claim 1 further comprising the step of heating or applying pressure to said multi-layer composite.
Claim 6
Dependent Claim
26 words
The method of claim 1 further comprising the step of applying at least one additional layer to at least one side of the resulting multi-layer composite.
Claim 7
Dependent Claim
11 words
The method of claim 1 wherein said polyamide is a nylon.
Claim 8
Dependent Claim
21 words
The method of claim 1 wherein said fluoropolymer comprises at least 3% by weight of interpolymerized units derived from vinylidene fluoride.
Claim 9
Dependent Claim
27 words
The method of claim 1 wherein said fluoropolymer is derived from vinylidene fluoride and one or more monomers selected from the group consisting of tetrafluoroethylene and hexafluoropropene.
Claim 10
Dependent Claim
11 words
The method of claim 1 wherein said fluoropolymer is a fluoroplastic.
Claim 11
Dependent Claim
14 words
The method of claim 1 wherein said amine comprises at least one primary amine.
Claim 12
Dependent Claim
12 words
The method of claim 1 wherein said amine is an alkylene di-primaryamine.
Claim 13
Dependent Claim
14 words
The method of claim 1 wherein said amine is hexamethylene diamine or dodecyl diamine.
Claim 14
Dependent Claim
25 words
The method of claim 1 wherein said first layer is composed predominantly of fluoropolymers and said second layer is composed predominantly of substantially non-fluorinated polymers.
Claim 15
Dependent Claim
23 words
The method of claim 1 wherein said first layer consists essentially of fluoropolymers and said second layer consists essentially of substantially non-fluorinated polymers.
Claim 16
Dependent Claim
12 words
The method of claim 1 wherein said substantially non-fluorinated polymer is thermoplastic.
Claim 17
Dependent Claim
19 words
The method of claim 15 wherein said mixing is done above the melting point of said substantially non-fluorinated polymer.
Claim 18
Independent Claim
134 words
A method for increasing the adhesion of a first layer comprising fluoropolymer to a second layer comprising a melt-processable, substantially non-fluorinated polymer, comprising the steps of (A) mixing an aliphatic di- or polyamine of less than 1,000 molecular weight with a tackifier and a melt-processable composition comprising said substantially non-fluorinated polymer; (B) forming a multi-layer composite comprising a layer comprising the mixture resulting from step A and a layer comprising said fluoropolymer; wherein said two layers are in substantial contact, said fluoropolymer comprises interpolymerized units derived from vinylidene fluoride, said substantially non-fluorinated polymer is a polyamide, polyimide, polyurethane, or a carboxyl, anhydride, or imide functional polyolefin, and said di- or polyamine is present in an amount sufficient to increase the adhesion between the two layers compared to composites prepared without said di- or polyamine.
Claim 19
Independent Claim
134 words
A method for increasing the adhesion of a first layer comprising fluoropolymer to a second layer comprising a melt-processable, substantially non-fluorinated polymer, comprising the steps of (A) mixing an aliphatic di- or polyamine of less than 1,000 molecular weight with a tackifier and a melt-processable composition comprising said substantially non-fluorinated polymer; (B) forming a multi-layer composite comprising a layer comprising the mixture resulting from step A and a layer comprising said fluoropolymer; wherein said two layers are in substantial contact, said fluoropolymer comprises interpolymerized units derived from vinylidene fluoride, said substantially non-fluorinated polymer is a polyamide, polyimide, polyurethane, or a carboxyl, anhydride, or imide functional polyolefin, and said di- or polyamine is present in an amount sufficient to increase the adhesion between the two layers compared to composites prepared without said di- or polyamine.
Claim 20
Dependent Claim
10 words
An article made according to the method of claim 17.
Claim 21
Independent Claim
130 words
A method for increasing the adhesion of a first layer comprising fluoropolymer to a second layer comprising a melt-processable, substantially non-fluorinated polymer, comprising the steps of (A) mixing an aliphatic di- or polyamine of less than 1,000 molecular weight with a melt-processable composition comprising said substantially non-fluorinated polymer; (B) forming a multi-layer composite comprising a layer comprising the mixture resulting from step A and a layer comprising said fluoropolymer; wherein said two layers are in substantial contact, said fluoropolymer is a homopolymer of vinylidene fluoride, said substantially non-fluorinated polymer is a polyamide, polyimide, polyurethane or a carboxyl, anhydride, or imide functional polyolefin, and said di- or polyamine is present in an amount sufficient to increase the adhesion between the two layers compared to composites prepared without said di- or polyamine.
Claim 22
Independent Claim
130 words
A method for increasing the adhesion of a first layer comprising fluoropolymer to a second layer comprising a melt-processable, substantially non-fluorinated polymer, comprising the steps of (A) mixing an aliphatic di- or polyamine of less than 1,000 molecular weight with a melt-processable composition comprising said substantially non-fluorinated polymer; (B) forming a multi-layer composite comprising a layer comprising the mixture resulting from step A and a layer comprising said fluoropolymer; wherein said two layers are in substantial contact, said fluoropolymer is a homopolymer of vinylidene fluoride, said substantially non-fluorinated polymer is a polyamide, polyimide, polyurethane or a carboxyl, anhydride, or imide functional polyolefin, and said di- or polyamine is present in an amount sufficient to increase the adhesion between the two layers compared to composites prepared without said di- or polyamine.
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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) | 2000-08-18 | 2001-02-17 | 2001-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-18 | 2005-02-17 | 2005-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-18 | 2009-02-17 | 2009-08-19 | $7700.00 | Window Closed / Lapsed |