US3674820A
Expired / Lapsed
US
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Fluorinated alcohols and their esters
Assignee: United States Department of Agriculture
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Filing: 1969-07-14
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Granted: 1972-07-04
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Expires: 1989-07-14
Abstract
Abstract Fluorinated ketones are converted into ether-esters, using the following typical plan: Hexafluoroacetone is reacted with an alkali metal fluoride, and the resultant intermediate is reacted with an omega-halo-aliphatic carboxylic acid ester, yielding WHEREIN M IS 1-20, R'' is a hydrocarbon group.
Inventors
- 👤 Allen G Pittman
- 👤 William L Wasley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:50
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/277; C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/13; C07C43/137; C07C59/00; C07C59/125; C07C59/135; C07C59/235; C07C59/305; C07C59/315; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/28; C10; C10M; C10M2211/00; C10M2211/04; C10M2211/044; C10M2211/06; C10N; C10N2040/00; C10N2040/08; C10N2050/00; C10N2050/015; C10N2050/02; C10N2050/10; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/02; Y10T; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/2172; Y10T442/2189
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
123 words
The process which comprises a. dispersing an alkali metal fluoride in an anhydrous inert solvent, b. cooling the dispersion, c. adding to the cooled dispersion a ketone of the structure d. warming to about alkali metal temperature the resulting reaction mixture formed solely from said alkalimetal fluoride, inert solvent, and ketone, e. without isolating the so-formed intermediate, adding to the reaction mixture an omega-halo aliphatic carboxylic acid ester of the structure X-(CH2)m-COOR'' wherein X is a halogen, m is an integer from 1 to 20, and R'' is a monovalent hydrocarbyl group, f. stirring the reaction mixture at a temperature from room temperature to 100* C, and g. recovering the so-produced compound having the structure wherein m and R'' are as defined above.
Claim 2
Dependent Claim
18 words
The process of claim 2 wherein the omega-halo aliphatic carboxylic acid ester is Br-(CH2)4-COOCH3 and the product is
Claim 3
Dependent Claim
18 words
The process of claim 2 wherein the omega-halo aliphatic carboxylic acid ester is Br-(CH2)10-COOC2H5 and the product is
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |