US4595518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating fibrous substrates with fluoropolymer amphoteric polymer and surfactants
Assignee: EIDP Inc
•
Filing: 1985-09-11
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Granted: 1986-06-17
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Expires: 2005-09-11
Abstract
Abstract Process for imparting oil- and water-repellency to fibrous substrates, particularly polypropylene upholstery fabric, which comprises applying thereto an effective amount of a composition prepared by first combining one or more fluorocarbon dispersions or polyfluoroalkyl-containing polymeric latexes containing an anionic surfactant with a nonionic surfactant having an HLB of 15±3 and then with an amphoteric polymer in an amount sufficient to make the composition slightly cationic, thereby facilitating deposition of said composition to said substrate. An anionic surfactant-containing elastomeric latex may be added so as to impart abrasion resistance.
Inventors
- 👤 Stuart Raynolds
- 👤 Rudolph G. DiFilipantonio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:45
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; D06M15/576; D06N; D06N3/00; D06N3/04; D06N3/047
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
70 words
A process for imparting oil- and water-repellency to a fibrous substrate which comprises applying thereto an effective amount of a composition prepared by first combining one or more fluorocarbon dispersions or polyfluoroalkyl-containing polymeric latexes containing an anionic surfactant with a nonionic an HLB of 15±3 and then with an amphoteric polymer in an amount sufficient to make the composition slightly cationic, thereby facilitating deposition of said composition to said substrate.
Claim 2
Dependent Claim
70 words
A process for imparting oil- and water-repellency to a fibrous substrate which comprises applying thereto an effective amount of a composition prepared by first combining one or more fluorocarbon dispersions or polyfluoroalkyl-containing polymeric latexes containing an anionic surfactant with a nonionic an HLB of 15±3 and then with an amphoteric polymer in an amount sufficient to make the composition slightly cationic, thereby facilitating deposition of said composition to said substrate.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein substrate in said fabric is polypropylene.
Claim 4
Dependent Claim
13 words
The process of claim 2 wherein said polypropylene fabric is an upholstery fabric.
Claim 5
Dependent Claim
34 words
The process of claim 3 wherein said composition is prepared by combining said polyfluoroalkyl-containing latexes or dispersion with said nonionic surfactant and an anionic surfactant-containing elastomeric latex prior to adding said amphoteric polymer thereto.
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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) | 1989-06-16 | 1989-12-16 | 1990-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-16 | 1993-12-16 | 1994-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-16 | 1997-12-16 | 1998-06-17 | $7700.00 | Window Closed / Lapsed |