US3883503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-(2-Nitro-4-sulfo- or optionally substituted sulfamoylanilino)phenyl-azo-phenyl dyes
Assignee: Sandoz AG
•
Filing: 1972-10-10
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Granted: 1975-05-13
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Expires: 1992-10-10
Abstract
Abstract Compounds of the formula AND SALTS THEREOF, WHEREIN R is alkyl or sulfoalkyl, X is -OH or -NHR1, wherein R1 is hydrogen, alkyl, alkoxyalkyl, phenyl or substituted phenyl having 1 or 2 substituents wherein each substituent is independently halo, alkyl or alkoxy, EACH Z and each Z'' is independently halo, alkyl or alkoxy, EACH M IS INDEPENDENTLY 0, 1 OR 2, AND N IS 0 OR 1, WITH THE PROVISO THAT THE MOLECULE CONTAINS 1 OR 2 SULFO GROUPS. These compounds are useful for dyeing natural or synthetic polyamide fibres or polyurethane fibres. They exhibit good fastness to light, rubbing, wet treatments, milling, perspiration and, when used in combination with other dyes, catalytic fading.
Inventors
- 👤 Assche Daniel Van
- 👤 Hanspeter Uehlinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:42
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/28; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
9 words
A compound according to claim 1 having the formula
Claim 4
Dependent Claim
60 words
a compound according to claim 1 wherein R1 is hydrogen, alkyl of 1 to 6 carbon atoms, alkoxyalkyl wherein the alkoxy radical and the alkyl radical independently have 1 to 6 carbon atoms each, phenyl or phenyl substituted by halo, alkyl of 1 to 6 carbon atoms or alkoxy of 1 to 6 carbon atoms, and each halo is chloro.
Claim 5
Dependent Claim
9 words
A compound according to claim 3 having the formula
Claim 6
Dependent Claim
7 words
A sodium salt according to claim 4.
Claim 7
Dependent Claim
16 words
A compound according to claim 3 wherein R is sulfoalkyl of 1 to 6 carbon atoms.
Claim 8
Dependent Claim
14 words
A compound according to claim 6 wherein X is -OH, and n is 1.
Claim 9
Dependent Claim
20 words
A compound according to claim 3 wherein X is -NHR1, and R is sulfoalkyl of 1 to 6 carbon atoms.
Claim 10
Dependent Claim
16 words
A compound according to claim 8 wherein R is sulfoalkyl of 2 to 4 carbon atoms.
Claim 11
Dependent Claim
10 words
A compound according to claim 8 wherein R1 is hydrogen.
Claim 12
Dependent Claim
32 words
A compound according to claim 8 wherein R1 is alkyl of 1 to 6 carbon atoms or alkoxyalkyl wherein the alkoxy and alkyl radicals independently have 1 to 6 carbon atoms each.
Claim 13
Dependent Claim
14 words
A compound according to claim 3 wherein each m is independently 1 or 2.
Claim 14
Dependent Claim
53 words
A compound according to claim 1 wherein R is sulfoalkyl of 1 to 6 carbon atoms, and X is -NHR1, wherein R1 is phenyl or substituted phenyl having 1 or 2 substituents wherein each substituent is independently halo, alkyl of 1 to 6 carbon atoms or alkoxy of 1 to 6 carbon atoms.
Claim 15
Dependent Claim
19 words
A compound according to claim 13 wherein R1 is monosubstituted phenyl wherein the substituent is in the para position.
Claim 16
Dependent Claim
9 words
A compound according to claim 1 having the formula
Claim 17
Dependent Claim
9 words
A compound according to claim 15 having the formula
Claim 18
Dependent Claim
9 words
The compound according to claim 16 having the formula
Claim 19
Dependent Claim
9 words
The compound according to claim 16 having the formula
Claim 20
Dependent Claim
9 words
The compound according to claim 16 having the formula
Claim 21
Dependent Claim
9 words
The compound according to claim 16 having the formula
Claim 22
Dependent Claim
9 words
The compound according to claim 10 having the formula
Claim 23
Dependent Claim
10 words
A compound according to claim 3 wherein X is -OH.
Claim 24
Dependent Claim
11 words
A compound according to claim 13 wherein each halo is chloro.
Claim 25
Dependent Claim
23 words
A compound according to claim 22 wherein R is alkyl of 1 to 6 carbon atoms, X is -OH, and n is 1.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |