Patent US6299637B1 successfully refreshed from Google Patents.
US3962358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing perfluorononanes
Assignee: Hoechst AG
•
Filing: 1974-06-20
•
Granted: 1976-06-08
•
Expires: 1994-06-20
Abstract
Abstract By reacting a perfluoro-nonene of the general formula C 9 F 18 in the liquid phase with elementary fluorine a perfluorononane of the general formula C 9 F 20 is formed at high yield.
Inventors
- 👤 Sigmar-Peter von Halasz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:42
CPC Classifications
C; C07; C07C; C07C19/00; C07C19/08; C07C17/00; C07C17/013; C07C17/04
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
6 words
A perfluorononane having the formula ##EQU11##
Claim 2
Dependent Claim
6 words
A perfluorononane having the formula ##EQU11##
Claim 3
Dependent Claim
6 words
A perfluorononane having the formula ##EQU12##
Claim 4
Dependent Claim
6 words
A perfluorononane having the formula ##EQU12##
Claim 5
Dependent Claim
6 words
A perfluorononane having the formula ##EQU13##
Claim 6
Dependent Claim
6 words
A perfluorononane having the formula ##EQU13##
Claim 7
Dependent Claim
41 words
A process for preparing a perfluorononane having the formula ##EQU14## or a mixture thereof which comprises reacting in the liquid phase a perfluorononene having the formula ##EQU15## or a mixture thereof with fluorine gas at a temperature from -40° to +120°C.
Claim 8
Dependent Claim
41 words
A process for preparing a perfluorononane having the formula ##EQU14## or a mixture thereof which comprises reacting in the liquid phase a perfluorononene having the formula ##EQU15## or a mixture thereof with fluorine gas at a temperature from -40° to +120°C.
Claim 9
Dependent Claim
37 words
A process for preparing a perfluorononane having the formula ##EQU16## which comprises reacting in the liquid phase a perfluorononene having the formula ##EQU17## or a mixture thereof with fluorine gas at a temperature from -40° to +120°C.
Claim 10
Dependent Claim
37 words
A process for preparing a perfluorononane having the formula ##EQU16## which comprises reacting in the liquid phase a perfluorononene having the formula ##EQU17## or a mixture thereof with fluorine gas at a temperature from -40° to +120°C.
Claim 11
Dependent Claim
19 words
A process according to claim 5, wherein the reaction is carried out at a temperature from +20° to +70°C.
Claim 12
Dependent Claim
16 words
The process of claim 4 wherein the reaction is carried out in the absence of diluent.
Claim 13
Dependent Claim
37 words
A process for preparing a perfluorononane having the formula ##EQU18## which comprises reacting in the liquid phase a perfluorononene having the formula ##EQU19## or a mixture thereof with fluorine gas at a temperature from 20°C to 70°C.
Claim 14
Dependent Claim
37 words
A process for preparing a perfluorononane having the formula ##EQU18## which comprises reacting in the liquid phase a perfluorononene having the formula ##EQU19## or a mixture thereof with fluorine gas at a temperature from 20°C to 70°C.
Claim 15
Dependent Claim
38 words
A process for preparing a perfluorononane having the formula ##EQU20## which comprises reacting in the liquid phase a perfluorononene having the formula ##EQU21## or a mixture thereof with fluorine gas at a temperature of from 90°C to 110°C.
Claim 16
Dependent Claim
38 words
A process for preparing a perfluorononane having the formula ##EQU20## which comprises reacting in the liquid phase a perfluorononene having the formula ##EQU21## or a mixture thereof with fluorine gas at a temperature of from 90°C to 110°C.
References Cited (Backward Citations)
US2013030A
Cited
US3149170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |