US6293312B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic tubing
Assignee: Fluid Routing Solutions Inc
•
Filing: 2000-05-23
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Granted: 2001-09-25
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Expires: 2020-05-23
Abstract
Abstract A thermoplastic tube for transfer of hydrocarbon fuel comprising an inner fluoroplastic layer and an outer polyamide layer bonded to the fluoroplastic layer wherein an adhesion promoter is included in at least one of the layers is disclosed. The adhesion promoter is an unsubstituted or substituted phenol salt of 1,8-diazabicyclo-[5,4,0]undec-7-ene on a novolac carrier which functions to increase the adhesive bond strength between the two layers. The adhesion promoter provides a chemically bonded adhesion in addition to the mechanical adhesion associated with extrusion or lamination of the layers.
Inventors
- 👤 Stanley E. Stripe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:10
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/14; F16L11/00; F16L11/04; F16L11/12; F16L2011/047; Y; Y10; Y10S; Y10S138/00; Y10S138/03; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/139; Y10T428/1393
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
60 words
A thermoplastic tube for transfer of hydrocarbon fuel comprising: an inner layer comprising a thermoplastic form of a tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride terpolymer; and an outer layer comprising a melt processible polyamide bonded to said inner layer wherein at least one of the layers further comprises an adhesion promoter comprising an unsubstituted or substituted phenol salt of 1,8-diazabicyclo-[5,4,0]undec-7-ene on a novolac carrier.
Claim 2
Dependent Claim
60 words
A thermoplastic tube for transfer of hydrocarbon fuel comprising: an inner layer comprising a thermoplastic form of a tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride terpolymer; and an outer layer comprising a melt processible polyamide bonded to said inner layer wherein at least one of the layers further comprises an adhesion promoter comprising an unsubstituted or substituted phenol salt of 1,8-diazabicyclo-[5,4,0]undec-7-ene on a novolac carrier.
Claim 3
Dependent Claim
14 words
The tubing of claim 1 wherein said thermoplastic tube is a two layer tube.
Claim 4
Dependent Claim
25 words
The tubing of claim 2 wherein said adhesion promoter is present in said inner layer at a concentration of from about 0.1 to 3 phr.
Claim 5
Dependent Claim
15 words
The tubing of claim 1 wherein said adhesion promoter is present in said outer layer.
Claim 6
Dependent Claim
25 words
The tubing of claim 4 wherein said adhesion promoter is present in said outer layer at a concentration of from about 0.1 to 3 phr.
Claim 7
Dependent Claim
19 words
The tubing of claim 1 wherein said adhesion promoter is present in both of said inner and outer layers.
Claim 8
Dependent Claim
21 words
The tubing of claim 6 wherein said adhesion promoter is present at a concentration of from about 0.1 to 3 phr.
Claim 9
Dependent Claim
10 words
The tubing of claim 7 further comprising a conductive material.
Claim 10
Dependent Claim
12 words
The tubing of claim 8 wherein said conductive material is carbon black.
Claim 11
Dependent Claim
26 words
The tubing of claim 1 wherein said melt processible polyamide is selected from the group consisting of Nylon 6, Nylon 6-6, Nylon 11 and Nylon 12.
Claim 12
Dependent Claim
59 words
A thermoplastic multi-layer material comprising: an inner layer of a thermoplastic form of a tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride terpolymer; and an outer layer of a melt processible polyamide bonded to said inner layer wherein at least one of the layers further comprises an adhesion promoter, the adhesion promoter being an unsubstituted or substituted phenol salt of 1,8-diazabicyclo-[5,4,0]undec-7-ene on a novolac carrier.
Claim 13
Dependent Claim
59 words
A thermoplastic multi-layer material comprising: an inner layer of a thermoplastic form of a tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride terpolymer; and an outer layer of a melt processible polyamide bonded to said inner layer wherein at least one of the layers further comprises an adhesion promoter, the adhesion promoter being an unsubstituted or substituted phenol salt of 1,8-diazabicyclo-[5,4,0]undec-7-ene on a novolac carrier.
Claim 14
Dependent Claim
17 words
The thermoplastic multi-layer material of claim 11 wherein said adhesion promoter is present in said inner layer.
Claim 15
Dependent Claim
27 words
The thermoplastic multi-layer material of claim 12 wherein said adhesion promoter is present in said inner layer at a concentration of from about 0.1 to 3 phr.
Claim 16
Dependent Claim
17 words
The thermoplastic multi-layer material of claim 11 wherein said adhesion promoter is present in said outer layer.
Claim 17
Dependent Claim
27 words
The thermoplastic multi-layer material of claim 14 wherein said adhesion promoter is present in said outer layer at a concentration of from about 0.1 to 3 phr.
Claim 18
Dependent Claim
21 words
The thermoplastic multi-layer material of claim 11 wherein said adhesion promoter is present in both of said inner and outer layers.
Claim 19
Dependent Claim
23 words
The thermoplastic multi-layer material of claim 6 wherein said adhesion promoter is present at a concentration of from about 0.1 to 3 phr.
Claim 20
Dependent Claim
12 words
The thermoplastic multi-layer material of claim 17 further comprising a conductive material.
Claim 21
Dependent Claim
14 words
The thermoplastic multi-layer material of claim 18 wherein said conductive material is carbon black.
Claim 22
Dependent Claim
28 words
The thermoplastic multi-layer material of claim 11 wherein said melt processible polyamide is selected from the group consisting of Nylon 6, Nylon 6-6, Nylon 11 and Nylon 12.
Claim 23
Independent Claim
93 words
A method for improving the bond strength between a fluoroplastic material and a melt processible polyamide material comprising the steps of: providing a fluoroplastic material comprising a thermoplastic form of a tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride terpolymer; providing a melt processible polyamide; mixing an adhesion promoter comprising an unsubstituted or substituted phenol salt of 1,8-diazabicyclo-[5,4,0]undec-7-ene on a novolac carrier with at least one of the fluoroplastic material or the melt processible polyamide material; and forming a multi-layer article comprising a layer made of the fluoroplastic material contacting a layer made of the melt processible polyamide material.
Claim 24
Independent Claim
93 words
A method for improving the bond strength between a fluoroplastic material and a melt processible polyamide material comprising the steps of: providing a fluoroplastic material comprising a thermoplastic form of a tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride terpolymer; providing a melt processible polyamide; mixing an adhesion promoter comprising an unsubstituted or substituted phenol salt of 1,8-diazabicyclo-[5,4,0]undec-7-ene on a novolac carrier with at least one of the fluoroplastic material or the melt processible polyamide material; and forming a multi-layer article comprising a layer made of the fluoroplastic material contacting a layer made of the melt processible polyamide material.
Claim 25
Dependent Claim
26 words
The method of claim 21 wherein the melt processible polyamide is selected from the group consisting of Nylon 6, Nylon 6-6, Nylon 11 and Nylon 12.
Claim 26
Dependent Claim
26 words
The method of claim 22 wherein said adhesion promoter is present in said melt processible polyamide at a concentration of from about 0.1 to 3 phr.
Claim 27
Dependent Claim
19 words
The method of claim 21 wherein said step of forming a multi-layer article comprises co-extrusion of the two layers.
Claim 28
Dependent Claim
26 words
The method of claim 21 further comprising the step of adding a conductive material to at least one of said fluoroplastic material and said polyamide material.
Claim 29
Dependent Claim
50 words
The method of claim 25 wherein said multi-layer article is a thermoplastic tube for transfer of hydrocarbon fuel, said tube having an inner tubular layer made of said fluoroplastic material and an outer tubular layer made of said polyamide material, said conductive material being added to said inner fluoroplastic layer.
Claim 30
Dependent Claim
12 words
The method of claim 26 wherein said conductive material is carbon black.
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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) | 2004-09-24 | 2005-03-26 | 2005-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-09-24 | 2009-03-26 | 2009-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-09-24 | 2013-03-26 | 2013-09-25 | $7700.00 | Window Closed / Lapsed |