US4001206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optionally substituted benzothiazolylphenyl-azo-alkanoylacetamidonaphthalenes
Assignee: Sandoz AG
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Filing: 1972-02-11
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Granted: 1977-01-04
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Expires: 1992-02-11
Abstract
Abstract Disclosed are compounds of the formula ##STR1## in which R, R 1 and R 4 , which may be the same or different, each signify a hydrogen atom, an alkyl radical of 1 to 6 carbon atoms or an alkoxy radical of 1 to 6 carbon atoms, R 2 signifies an alkyl radical of 1 to 6 carbon atoms, R 3 signifies a hydrogen atom or an alkyl radical of 1 to 6 carbon atoms, n signifies 0 or 1, m signifies 0 or 1, and p signifies 0 to 3 With the proviso that the compounds contain at least one sulphonic acid group; their water soluble salts, process for the production thereof, compositions containing same and a process for dyeing paper therewith. The dyes are highly substantive to paper and produces dyeings that exhibit good fastness to light, water, milk, fruit juices and alcohol but that are bleachable by oxidation or reduction.
Inventors
- 👤 Georg Schoefberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:25
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0072; D; D21; D21H; D21H21/00; D21H21/14; D21H21/28; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/919
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
120 words
A compound of the formula ##STR32## or a water-soluble salt thereof, wherein R is hydrogen, alkyl of 1 to 6 carbon atoms or alkoxy of 1 to 6 carbon atoms, R 1 is hydrogen, alkyl of 1 to 6 carbon atoms or alkoxy of 1 to 6 carbon atoms, R 2 is alkyl of 1 to 6 carbon atoms, R 3 is hydrogen or alkyl of 1 to 6 carbon atoms, R 4 is hydrogen, alkyl of 1 to 6 carbon atoms or alkoxy of 1 to 6 carbon atoms, m is 0 or 1, n is 0 or 1, p is 0 to 3, with the proviso that the sum of m, n and p is 1 to 5.
Claim 2
Dependent Claim
120 words
A compound of the formula ##STR32## or a water-soluble salt thereof, wherein R is hydrogen, alkyl of 1 to 6 carbon atoms or alkoxy of 1 to 6 carbon atoms, R 1 is hydrogen, alkyl of 1 to 6 carbon atoms or alkoxy of 1 to 6 carbon atoms, R 2 is alkyl of 1 to 6 carbon atoms, R 3 is hydrogen or alkyl of 1 to 6 carbon atoms, R 4 is hydrogen, alkyl of 1 to 6 carbon atoms or alkoxy of 1 to 6 carbon atoms, m is 0 or 1, n is 0 or 1, p is 0 to 3, with the proviso that the sum of m, n and p is 1 to 5.
Claim 3
Dependent Claim
10 words
An alkali metal or ammonium salt according to claim 1.
Claim 4
Dependent Claim
7 words
A sodium salt according to claim 2.
Claim 5
Dependent Claim
23 words
A compound according to claim 1, or a water-soluble salt thereof, wherein each alkyl and alkoxy independently has 1 to 3 carbon atoms.
Claim 6
Dependent Claim
30 words
A compound according to claim 1, or a water-soluble salt thereof, wherein R is methyl, with the proviso that the R group is in the 6-position of the benzothiazole ring.
Claim 7
Dependent Claim
16 words
A compound according to claim 5, or a water-soluble salt thereof, wherein R 2 is methyl.
Claim 8
Dependent Claim
16 words
A compound according to claim 6, or a water-soluble salt thereof, wherein R 4 is hydrogen.
Claim 9
Dependent Claim
19 words
A compound according to claim 7, or a water-soluble salt thereof, wherein R 3 is hydrogen, methyl or ethyl.
Claim 10
Dependent Claim
16 words
A compound according to claim 8, or a water-soluble salt thereof, wherein R 1 is hydrogen.
Claim 11
Dependent Claim
51 words
A compound according to claim 8 having the formula ##STR33## or a water-soluble salt thereof, wherein R 1 is hydrogen, alkyl of 1 to 6 carbon atoms or alkoxy of 1 to 6 carbon atoms, m is 0 or 1, n is 0 or 1, and p' is 1 to 3.
Claim 12
Dependent Claim
51 words
A compound according to claim 8 having the formula ##STR34## or a water-soluble salt thereof, wherein R 1 is hydrogen, alkyl of 1 to 6 carbon atoms or alkoxy of 1 to 6 carbon atoms, m is 0 or 1, n is 0 or 1, and p' is 1 to 3.
Claim 13
Dependent Claim
142 words
A compound according to claim 1 having the formula ##STR35## or a water-soluble salt thereof, wherein R is hydrogen, alkyl of 1 to 6 carbon atoms or alkoxy of 1 to 6 carbon atoms, R 1 is hydrogen, alkyl of 1 to 6 carbon atoms or alkoxy of 1 to 6 carbon atoms, R 2 is alkyl of 1 to 6 carbon atoms, R 3 is hydrogen or alkyl of 1 to 6 carbon atoms, R 4 is hydrogen, alkyl of 1 to 6 carbon atoms or alkoxy of 1 to 6 carbon atoms, m is 0 or 1, n is 0 or 1, q is 1 or 2, and r is 0 to 2, with the proviso that the sum of q and r is 1 to 3 and the sum of m, n, q and r is 1 to 5.
Claim 14
Dependent Claim
31 words
A compound according to claim 12, or a water-soluble salt thereof, wherein q is 1, with the proviso that the sum of m, n, q and r is 2 or 3.
Claim 15
Dependent Claim
31 words
A compound according to claim 12, or a water-soluble salt thereof, wherein q is 2, with the proviso that the sum of m, n, q and r is 2 to 4.
Claim 16
Dependent Claim
15 words
The compound according to claim 9 having the formula ##STR36## or a water-soluble salt thereof.
Claim 17
Dependent Claim
15 words
The compound according to claim 9 having the formula ##STR37## or a water-soluble salt thereof.
Claim 18
Dependent Claim
15 words
The compound according to claim 9 having the formula ##STR38## or a water-soluble salt thereof.
Claim 19
Dependent Claim
15 words
The compound according to claim 9 having the formula ##STR39## or a water-soluble salt thereof.
Claim 20
Dependent Claim
15 words
The compound according to claim 9 having the formula ##STR40## or a water-soluble salt thereof.
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) | 1980-01-04 | 1980-07-05 | 1981-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-04 | 1984-07-05 | 1985-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-04 | 1988-07-05 | 1989-01-04 | $7700.00 | Window Closed / Lapsed |