US3932378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonated disazo dyestuffs containing an ether group
Assignee: Novartis AG
•
Filing: 1971-08-18
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Granted: 1976-01-13
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Expires: 1991-08-18
Abstract
Abstract Disazo compounds of the formula ##SPC1## In which R 1 represents a sulphobenzene or sulphonaphthalene radical, B 1 , B 2 , E 1 and E 2 each represents a hydrogen atom, a low molecular alkyl or alkoxy radical, R 2 represents a low molecular alkylene radical, X represents a functional radical, and --OR 2 --X is in the ortho- or para-position to the azo bridge, and process for the preparation of these dyestuffs. These dyestuffs provide natural and synthetic polyamides, e.g. wool and nylon, with dyeings of excellent general fastness properties.
Inventors
- 👤 Alfred Fasciati
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:35
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/28; C09B31/00; C09B31/02; C09B31/06; C09B31/062; C09B31/065; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
99 words
A disazo compound of the formula ##SPC8## in which R 1 is mono- or disulfonated phenyl or naphthyl which, in addition to said sulfo groups is further unsubstituted or substituted by chlorine, lower alkyl or lower alkoxy, B 1 , b 2 , e 1 and E 2 each is hydrogen, lower alkyl or lower alkoxy, R 2 is low molecular alkylene, vinylene or propylene, X is chloro hydroxyl cyano, lower alkoxy, phenoxy, carboxyl, lower alkanoyl, lower alkoxycarbonyl, benzoyl benzoyl, or 1,2 epoxyethyl or 2,3-epoxypropyl, and -OR 2 -X is in the ortho- or para-position to the azo bridge.
Claim 2
Dependent Claim
99 words
A disazo compound of the formula ##SPC8## in which R 1 is mono- or disulfonated phenyl or naphthyl which, in addition to said sulfo groups is further unsubstituted or substituted by chlorine, lower alkyl or lower alkoxy, B 1 , b 2 , e 1 and E 2 each is hydrogen, lower alkyl or lower alkoxy, R 2 is low molecular alkylene, vinylene or propylene, X is chloro hydroxyl cyano, lower alkoxy, phenoxy, carboxyl, lower alkanoyl, lower alkoxycarbonyl, benzoyl benzoyl, or 1,2 epoxyethyl or 2,3-epoxypropyl, and -OR 2 -X is in the ortho- or para-position to the azo bridge.
Claim 3
Dependent Claim
29 words
A disazo compound according to claim 1, in which X has the formula --CO--R 3 , wherein R 3 represents hydroxy, low molecular alkyl low molecular alkoxy or phenyl.
Claim 4
Dependent Claim
26 words
A disazo compound according to claim 1, in which X has the formula --O--R 4 , wherein R 4 represents hydrogen, low molecular alkyl or phenyl.
Claim 5
Dependent Claim
27 words
A disazo compound according to claim 1 in which R 1 corresponds to the formula ##SPC9## wherein A represents hydrogen low molecular alkyl or low molecular alkoxy.
Claim 6
Dependent Claim
20 words
A disazo compound according to claim 4, which contains 2 to 4 low molecular alkyl or low molecular alkoxy groups.
Claim 7
Dependent Claim
19 words
A disazo compound according to claim 5, in which B 1 and B 2 each represent methoxy or ethoxy.
Claim 8
Dependent Claim
16 words
A disazo compound according to claim 6, in which E 1 and E 2 are hydrogen.
Claim 9
Dependent Claim
15 words
A disazo compound according to claim 5 in which R 2 represents methylene or ethylene.
Claim 10
Dependent Claim
12 words
A disazo compound according to claim 8, in which X is hydroxy.
Claim 11
Dependent Claim
11 words
The disazo compound according to claim 9 of the formula ##SPC10##
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |