US4048221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diols containing sulphonic acid groups based on dihydroxy alkenes
Assignee: Bayer AG
•
Filing: 1975-03-04
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Granted: 1977-09-13
•
Expires: 1995-03-04
Abstract
Abstract The instant invention relates to sulphonates containing ether groups and derived from dihydroxy alkane sulphonic acids, and to a process for their production. They are obtained by the addition of bisulphites to (poly)alkoxylated dihydroxy alkenes.
Inventors
- 👤 Gerhard Dieter Wolf
- 👤 Francis Bentz
- 👤 Gunther Nischk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:01
CPC Classifications
C; C07; C07C; C07C309/00; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0819; C08G18/0828; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5072; C08G65/00; C08G65/02; C08G65/26; C08G65/2603; C08G65/2606; C08G65/2609; C08G65/32; C08G65/321; C08G65/326; C08G69/00; C08G69/42; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42; C08L; C08L33/00; C08L33/18; C08L33/20; C08L71/00; C08L71/02; C08L77/00; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
78 words
Dihydroxy sulphonates containing ether groups and corresponding to the general formula ##STR11## in which, A and B, which may be the same or different, represent straight-chain or branched alkylene radicals with 1 to 6 carbon atoms, the total number of carbon atoms in A and B being from 3 to 7, R represents hydrogen C 1 -C 4 -alkyl or phenyl, X represents NH 4 or an alkali metal, and n is a number from 1 to 30.
Claim 2
Dependent Claim
78 words
Dihydroxy sulphonates containing ether groups and corresponding to the general formula ##STR11## in which, A and B, which may be the same or different, represent straight-chain or branched alkylene radicals with 1 to 6 carbon atoms, the total number of carbon atoms in A and B being from 3 to 7, R represents hydrogen C 1 -C 4 -alkyl or phenyl, X represents NH 4 or an alkali metal, and n is a number from 1 to 30.
Claim 3
Dependent Claim
29 words
Dihydroxy sulphonates containing ether groups as claimed in claim 1 in which A in the general formula is a methylene group and B is --CH 2 --CH 2 --.
References Cited (Backward Citations)
US2602054A
Cited
US3002903A
Cited
US3041256A
Cited
US3255239A
Cited
US3418239A
Cited
US3860638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |