US4360460A
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Novel azo dyes having a 4-sulfo-5-aminomethyl naphthalene coupling moiety
Assignee: Novartis AG
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Filing: 1980-12-16
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Granted: 1982-11-23
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Expires: 2000-12-16
Abstract
Abstract Dyestuff intermediates of the formula ##STR1## wherein R 1 represents hydrogen, an alkyl radical of 1 to 8 carbon atoms or a phenyl radical, R 2 represents hydrogen or an acyl radical and Z represents hydrogen or a sulfo group, and the use thereof for the manufacture of azo dyes of the formula ##STR2## wherein D represents the radical of a coupling component, R 1 represents hydrogen, an alkyl radical of 1 to 8 carbon atoms or a phenyl radical, and R 2 represents hydrogen or an acyl radical, or of azo dyes of the formula ##STR3## wherein K is the radical of a coupling component, Z represents hydrogen or the sulfo group, and R 2 represents hydrogen or an acyl radical.
Inventors
- 👤 Rudolf Hurter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:33
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/002; C09B62/006; C09B29/00; C09B29/0014; C09B29/06; C09B29/095; C09B29/0955; C09B62/02; C09B62/04; C09B62/043
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
31 words
Azo dyes of the formula ##STR98## wherein K is the radical of a coupling component, Z represents hydrogen or the sulfo group and R 2 represents hydrogen or an acyl radical.
Claim 2
Dependent Claim
31 words
Azo dyes of the formula ##STR98## wherein K is the radical of a coupling component, Z represents hydrogen or the sulfo group and R 2 represents hydrogen or an acyl radical.
Claim 3
Dependent Claim
22 words
Azo dyes according to claim 1, wherein K is the radical of an aminobenzene, aminonaphthalene, naphthol, aminonaphthol, pyrazolone, aminopyrazole, pyridone or acetoacetamide.
Claim 4
Dependent Claim
22 words
Azo dyes according to claim 1, wherein K is the radical of an aminonaphtholsulfonic acid, aminonaphthalenesulfonic acid, an acetoanilide or a 1-aryl-3-methylpyrazol-5-one.
Claim 5
Dependent Claim
12 words
Azo dyes according to claim 1, wherein Z is a sulfo group.
Claim 6
Dependent Claim
16 words
Azo dyes according to claim 1, wherein R 2 is hydrogen or α-chloroacetyl, α,β-dibromopropionyl or α-bromoacryoyl.
References Cited (Backward Citations)
US4049704A
Cited
US4145340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-22 | 1986-05-24 | 1986-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-22 | 1990-05-24 | 1990-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-22 | 1994-05-24 | 1994-11-23 | $7700.00 | Window Closed / Lapsed |