US2693458A
Expired / Lapsed
US
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Chromium complexes of fluorocarbon acids
Assignee: 3M Co
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Filing: 1952-07-18
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Granted: 1954-11-02
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Expires: 1972-07-18
Abstract
No abstract record available.
Inventors
- 👤 Maynard H Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:33
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/224; D06M13/236; C; C07; C07F; C07F11/00; C07F11/005; Y; Y10; Y10S; Y10S260/00; Y10S260/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
CHROMIUM COORDINATION COMPLEXES OF THE CLASS CONSISTING OF: (A) WATER-INSOLUBLE GREEN-COLORED TACKY LIQUID COMPLEXED FORMED BY THE REACTION, IN AN AQUEOUS SYSTEM OF A CHLORINE-FREE REACTIVE COMPOUND CONTAINING TRIVALENT CHROMIUM, AND A PERFLUOROALKYL MONOCARBOXYLIC ACID THAT HAS FROM 4 TO 12 CARBON ATOMS IN THE MOLECULE, THESE COMPLEXES BEING FREE FROM CHLORINE AND CONTAINING TWO PERFLUORO ACIDO GROUPS FOR EACH CHROMIUM ATOM, AND BEING CAPABLE OF POLYMERIZATION TO A NON-TACKY SOLID POLYMER THAT IS BOTH HYDROPHOBIC AND OLEOPHOBIC; AND (B) THE AMMONIATED DERIVATIVES OF THE AFORESAID COMPLEXES.
Claim 2
Dependent Claim
87 words
CHROMIUM COORDINATION COMPLEXES OF THE CLASS CONSISTING OF: (A) WATER-INSOLUBLE GREEN-COLORED TACKY LIQUID COMPLEXED FORMED BY THE REACTION, IN AN AQUEOUS SYSTEM OF A CHLORINE-FREE REACTIVE COMPOUND CONTAINING TRIVALENT CHROMIUM, AND A PERFLUOROALKYL MONOCARBOXYLIC ACID THAT HAS FROM 4 TO 12 CARBON ATOMS IN THE MOLECULE, THESE COMPLEXES BEING FREE FROM CHLORINE AND CONTAINING TWO PERFLUORO ACIDO GROUPS FOR EACH CHROMIUM ATOM, AND BEING CAPABLE OF POLYMERIZATION TO A NON-TACKY SOLID POLYMER THAT IS BOTH HYDROPHOBIC AND OLEOPHOBIC; AND (B) THE AMMONIATED DERIVATIVES OF THE AFORESAID COMPLEXES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |