US3337435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing carboxylic acid salts of fluoro telomers
Assignee: Pennwalt Corp
•
Filing: 1955-08-02
•
Granted: 1967-08-22
•
Expires: 1975-08-02
Abstract
No abstract record available.
Inventors
- 👤 Robert N Haszeldine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:53
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/263; C07C17/269; C07C17/093; C07C17/20; C07C17/202; C07C17/204; C07C17/23; C07C17/25; C07C17/272; C07C17/278; C07C17/38; C07C17/395; C07C19/00; C07C19/08; C07C19/10; C07C19/14; C07C19/16; C07C21/00; C07C21/02; C07C21/18; C07C51/00; C07C51/16; C07C53/00; C07C53/15; C07C53/19; C07C53/21; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
111 words
A METHOD OF FORMING A CARBOXYLIC ACID SALT OF THE FORMULA CF2XCCLYR''COOM, WHERE M IS AN ALKALI METAL, WHICH COMPRISES REACTING A COMPOUND OF THE FORMULA CF2XCCLYR''CFCLI, WHERE X IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND FLUORINE, Y IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND FLUORINE, AND R'' REPRESENTS AN OXIDATION RESISTANT CHAIN HAVING FROM 4 TO 40 CARBON ATOMS IN A STRAIGHT CHAIN CONFIGURATION, MADE UP OF REPEATING FLUOROALKENE UNITS, LESS THE TERMINAL CARBON ATOM OF THE LAST FLUOROALKENE UNIT, WITH MOLECULAR OXYGEN IN THE PRESENCE OF THE HYDROXIDE OF THE ALKALI METAL M, IN ADMIXTURE WITH WATER, IN THE PRESENCE OF A FREE RADICAL INITIATOR.
Claim 2
Independent Claim
111 words
A METHOD OF FORMING A CARBOXYLIC ACID SALT OF THE FORMULA CF2XCCLYR''COOM, WHERE M IS AN ALKALI METAL, WHICH COMPRISES REACTING A COMPOUND OF THE FORMULA CF2XCCLYR''CFCLI, WHERE X IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND FLUORINE, Y IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND FLUORINE, AND R'' REPRESENTS AN OXIDATION RESISTANT CHAIN HAVING FROM 4 TO 40 CARBON ATOMS IN A STRAIGHT CHAIN CONFIGURATION, MADE UP OF REPEATING FLUOROALKENE UNITS, LESS THE TERMINAL CARBON ATOM OF THE LAST FLUOROALKENE UNIT, WITH MOLECULAR OXYGEN IN THE PRESENCE OF THE HYDROXIDE OF THE ALKALI METAL M, IN ADMIXTURE WITH WATER, IN THE PRESENCE OF A FREE RADICAL INITIATOR.
Claim 3
Dependent Claim
25 words
THE METHOD OF CLAIM 1 WHEREIN THE REACTION IS CARRIED OUT IN THE PRESENCE OF ULTRAVIOLET LIGHT AND THE ALKALI METAL HYDROXIDE IS SODIUM HYDROXIDE.
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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) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |