US3940435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfluoroalkyl compounds
Assignee: Novartis Corp
•
Filing: 1973-09-10
•
Granted: 1976-02-24
•
Expires: 1993-09-10
Abstract
Abstract New perfluoroalkyl compounds of the formula R.sub.f --CH.sub.2 CH.sub.2 --SO.sub.x C.sub.m H.sub.2m A, wherein R f is a perfluoroalkyl radical with 5 to 18 carbon atoms, A is carboxyl, carboxyl ester, carboxylic amide or cyano, x is 1 or 2 and m is a whole number from 1 to 3, with the proviso that when A is carboxyl, then m is only 1 if x is 1, are provided. These new compounds are useful for producing oleophobic finishes on porous and non-porous substrates, e.g. textile materials. They are also useful as intermediates for the manufacture of further fluorine containing finishing agents.
Inventors
- 👤 Armin Hiestand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:13
CPC Classifications
C; C07; C07C; C07C317/00; C07C317/44; D; D06; D06M; D06M13/00; D06M13/244; D06M13/248; D06M13/256; D06M13/322; D06M13/345; D06M13/402; D06M13/408
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
71 words
A perfluoroalkyl compound of the formula R.sub.f --CH.sub.2 CH.sub.2 --SO.sub.x --C.sub.m H.sub.2m A wherein R f is a perfluoroalkyl radical with 5 to 18 carbon atoms, A is COOH, COOR, R is alkyl with 1 to 20 carbon atoms, x is 1 or 2 and m is a whole number from 1 to 3, with the proviso that when A is carboxyl, then m is only 1 if x is 1.
Claim 2
Dependent Claim
71 words
A perfluoroalkyl compound of the formula R.sub.f --CH.sub.2 CH.sub.2 --SO.sub.x --C.sub.m H.sub.2m A wherein R f is a perfluoroalkyl radical with 5 to 18 carbon atoms, A is COOH, COOR, R is alkyl with 1 to 20 carbon atoms, x is 1 or 2 and m is a whole number from 1 to 3, with the proviso that when A is carboxyl, then m is only 1 if x is 1.
Claim 3
Dependent Claim
77 words
A perfluoroalkyl compound according to claim 1, which correspond to the formula C.sub.n F.sub.2n.sub.+1 CH.sub.2 CH.sub.2 --SO.sub.x --C.sub.m H.sub.2m A.sub.1 wherein A 1 is COOH, COOR, R is alkyl with 1 to 20 carbon atoms, n is a whole number from 6 to 14, x is 1 or 2 and m is a whole number from 1 to 3, with the proviso that when A 1 is --COOH, then m is only 1 if x is 1.
Claim 4
Dependent Claim
17 words
A perfluoroalkyl compound according to claim 2, wherein R represents alkyl with 1 to 18 carbon atoms.
Claim 5
Dependent Claim
70 words
A perfluoroalkyl compound according to claim 2, which correspond to the formula C.sub.n F.sub.2n.sub.+1 CH.sub.2 CH.sub.2 --SO.sub.x (CH.sub.2).sub.m A.sub.1 wherein A 1 is COOH, COOR, R represents alkyl with 1 to 20 carbon atoms, n is a whole number from 6 to 14 and m' and x is each 1 or 2, with the proviso that when A 1 is --COOH, then m' is only 1 if x is 1.
Claim 6
Dependent Claim
67 words
A perfluoroalkyl compound according to claim 2, which correspond to the formula C.sub.n F.sub.2n.sub.+1 CH.sub.2 CH.sub.2 --SO.sub.x --C.sub.m H.sub.2m A.sub.2 wherein A 2 is --COOH, n is a whole number from 6 to 14, x is 1 or 2 and m is a whole number from 1 to 3, with the proviso that when A 2 is --COOH, then m is only 1 if x is 1.
Claim 7
Dependent Claim
61 words
A perfluoroalkyl compound according to claim 5, which correspond to the formula C.sub.n F.sub.2n.sub.+1 CH.sub.2 CH.sub.2 --SO.sub.x (CH.sub.2).sub.m A.sub.2 wherein A 2 is --COOH, and n is a whole number from 6 to 14 and m' and x is each 1 or 2, with the proviso that when A 2 is --COOH, then m' is only 1 if x is 1.
Claim 8
Dependent Claim
54 words
A perfluoroalkyl compound according to claim 2, which correspond to the formula C.sub.n F.sub.2n.sub.+1 CH.sub.2 CH.sub.2 --SO.sub.x C.sub.m H.sub.2m COOR wherein R represents alkyl with 1 to 20 carbon atoms, n is a whole number from 6 to 14, x is 1 or 2, and m is a whole number from 1 to 3.
Claim 9
Dependent Claim
47 words
A perfluoroalkyl compound according to claim 7, which correspond to the formula C.sub.n F.sub.2n.sub.+1 CH.sub.2 CH.sub.2 --SO.sub.x (CH.sub.2).sub.m COOR wherein R represents alkyl with 1 to 20 carbon atoms, n is a whole number from 6 to 14, and m' and x is each 1 or 2.
Claim 10
Dependent Claim
38 words
A perfluoroalkyl compound according to claim 7, which is selected from the group consisting of the formulae ##EQU36## wherein R is alkyl with 1 to 20 carbon atoms and n is a whole number from 6 to 14.
Claim 11
Dependent Claim
17 words
A perfluoroalkyl compound according to claim 7, wherein R is alkyl with 1 to 18 carbon atoms.
Claim 12
Dependent Claim
17 words
A perfluoroalkyl compound according to claim 2, wherein n is a whole number from 6 to 10.
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) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |