Patent US4124047A successfully refreshed from Google Patents.
Patent US3963776A successfully refreshed from Google Patents.
US3963776A
Expired / Lapsed
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Amine fluoroacylimide surfactants
Assignee: EIDP Inc
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Filing: 1974-06-24
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Granted: 1976-06-15
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Expires: 1994-06-24
Abstract
Abstract Aqueous solutions containing from 0.001 to 1% of a surfactant composed of at least one compound of the formula ##EQU1## wherein R f is a straight chain fluorocarbon radical of 6 to 16 carbons, n is 0 or 1, and Q + is derived from a water-soluble tertiary amine, Q having from 3 to 6 carbon atoms and up to 3 oxygen atoms as oxa or hydroxy groups and having surface tension less than 25 dynes/cm, are disclosed.
Inventors
- 👤 William J. Middleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:04
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0028; A62D1/0035; A62D1/0042; A62D1/0071; A62D1/0085
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
53 words
A compound having the formula ##EQU17## wherein R f is a straight chain fluorocarbon radical of 6 to 16 carbon atoms and Q + is derived from a water-soluble tertiary amine Q having from 3 to 6 carbon atoms and up to 3 oxygen atoms in the form of oxa or hydroxy groups.
Claim 2
Dependent Claim
53 words
A compound having the formula ##EQU17## wherein R f is a straight chain fluorocarbon radical of 6 to 16 carbon atoms and Q + is derived from a water-soluble tertiary amine Q having from 3 to 6 carbon atoms and up to 3 oxygen atoms in the form of oxa or hydroxy groups.
Claim 3
Dependent Claim
13 words
A compound of claim 1 where Q is N(CH 3 ) 3 .
Claim 4
Dependent Claim
14 words
A compound of claim 2 where R f is n-C 8 F 17 .
Claim 5
Dependent Claim
14 words
A compound of claim 2 where R f is n-C 6 F 13 .
Claim 6
Dependent Claim
14 words
A compound of claim 2 where R f is n-C 10 F 21 .
Claim 7
Dependent Claim
17 words
A compound of claim 1 where Q is N(CH 3 ) 2 CH 2 CH 2 OH.
Claim 8
Dependent Claim
14 words
A compound of claim 6 where R f is n-C 6 F 13 .
References Cited (Backward Citations)
US3410880A
Cited
US3488389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |