US4127731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing fluorinated acyl fluoride having an ester group
Assignee: AGC Inc
•
Filing: 1976-11-08
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Granted: 1978-11-28
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Expires: 1996-11-08
Abstract
Abstract A fluorinated acyl fluoride having an ester group which has the formula FOC(CF.sub.2).sub.n-1 CO.sub.2 R wherein n is 2 to 4 and R represents an alcohol residual group is produced by reacting a perfluorolactone having the formula ##STR1## wherein n represents an integer of 2 to 4, with an alcohol having the formula ROH wherein R represents an alcohol residual group.
Inventors
- 👤 Masaaki Yamabe
- 👤 Seiji Munekata
- 👤 Yoshio Sugaya
- 👤 Yukio Jitsugiri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:16
CPC Classifications
C; C07; C07C; C07C69/00; C07C67/00; C07C67/02; C07C69/62; C07C69/63
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
111 words
A process for producing a fluorinated acyl fluoride having an ester group which has the formula FOC(CF.sub.2).sub.n-1 CO.sub.2 R wherein n represents an integer of from 2 to 4 and R represents an alcohol residual group which comprises reacting under substantially anhydrous conditions a perfluorolactone having the formula ##STR3## wherein n represents an integer of from 2 to 4 with an alcohol having the formula ROH wherein R represents an alkyl, aralkyl or aryl group having up to 8 carbon atoms, wherein the molar ratio of alcohol to perfluorolactone is less than 2, and wherein the perfluorolactone and/or the alcohol are respectively diluted with anhydrous inert organic solvent before the reaction.
Claim 2
Dependent Claim
111 words
A process for producing a fluorinated acyl fluoride having an ester group which has the formula FOC(CF.sub.2).sub.n-1 CO.sub.2 R wherein n represents an integer of from 2 to 4 and R represents an alcohol residual group which comprises reacting under substantially anhydrous conditions a perfluorolactone having the formula ##STR3## wherein n represents an integer of from 2 to 4 with an alcohol having the formula ROH wherein R represents an alkyl, aralkyl or aryl group having up to 8 carbon atoms, wherein the molar ratio of alcohol to perfluorolactone is less than 2, and wherein the perfluorolactone and/or the alcohol are respectively diluted with anhydrous inert organic solvent before the reaction.
Claim 3
Dependent Claim
21 words
A process according to claim 1, wherein the perfluorolactone and the alcohol are respectively added in the anhydrous inert organic solvent.
Claim 4
Dependent Claim
18 words
A process according to claim 1, wherein a hydrogen fluoride uptaking agent is added in the reaction system.
Claim 5
Dependent Claim
17 words
A process according to claim 3, wherein sodium fluoride is added as the hydrogen fluoride uptaking agent.
Claim 6
Dependent Claim
15 words
A process according to claim 1 wherein the anhydrous inert organic solvent is diethyleneglycol dimethylether.
References Cited (Backward Citations)
US3351653A
Cited
US3461155A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-27 | 1982-05-29 | 1982-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-27 | 1986-05-29 | 1986-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-27 | 1990-05-29 | 1990-11-28 | $7700.00 | Window Closed / Lapsed |