EP0166231A2
Expired / Lapsed
EP
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Phenylazonaphthyl sulfonic acids and salts thereof
Assignee: Noveon Hilton Davis Inc
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Filing: 1985-05-24
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Granted: —
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Expires: 2005-05-24
Abstract
Abstract Salts of phenylazonaphthyl sulfonic acids useful as blue-red colorants for textile fabrics, cellulosic fibers and edibel compositions are prepared by diazotizing aniline sulfonic acid and coupling the resulting diazo compound to a 1-hydroxynaphthalene mono- or disulfonic acid.
Inventors
- 👤 Wayne Lee Cook
- 👤 Robert Peter Huth
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 08:01
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/28; A; A23; A23L; A23L5/00; A23L5/40; A23L5/42; A23L5/47; C; C09; C09B; C09B29/00; C09B29/10; C09B29/16; D06; D06P; D06P1/00; D06P1/39
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
36 words
A water-soluble monoazo compound having the structural formula wherein: R and R 1 independently represent non-tertiary C 1 to C 4 alkyl; X represents hydrogen or any physiologically acceptable cation; and y represents 1 or 2.
Claim 2
Dependent Claim
36 words
A water-soluble monoazo compound having the structural formula wherein: R and R 1 independently represent non-tertiary C 1 to C 4 alkyl; X represents hydrogen or any physiologically acceptable cation; and y represents 1 or 2.
Claim 3
Dependent Claim
12 words
A water-soluble monoazo compound according to claim 1, wherein y is 1.
Claim 4
Dependent Claim
12 words
A water-soluble monoazo compound according to claim 2, having the structural formula
Claim 5
Dependent Claim
12 words
A water-soluble monoazo compound according to claim 2, having the structural formula
Claim 6
Dependent Claim
12 words
A water-soluble monoazo compound according to claim 2, having the structural formula
Claim 7
Dependent Claim
12 words
A water-soluble monoazo compound according to claim 1, wherein y is 2.
Claim 8
Dependent Claim
12 words
A water-soluble monoazo compound according to claim 6, having the structural formula
Claim 9
Dependent Claim
20 words
A water-soluble monoazo compound according to any one of the preceding claims, in which R and R are each methyl.
Claim 10
Dependent Claim
17 words
A water-soluble monoazo compound according to any one of the preceding claims, in which X is sodium.
Claim 11
Dependent Claim
39 words
A process for the preparation of a water-soluble monoazo compound according to claim 1, which comprises diazotizing an amine of the formula coupling the resulting diazonium salt with approximately one molecular equivalent of a coupling component of the formula
Claim 12
Dependent Claim
31 words
A method of dyeing textile and/or textile fibers which comprises applying said textile fibers to a monoazo compound according to any one of claims 1-9 or prepared according to claim 10.
Claim 13
Dependent Claim
29 words
A method of coloring edible compositions which comprises incorporating into said edible compositions a monoazo compound according to any one of claims 1-9 or prepared according to claim 10.
References Cited (Backward Citations)
No citation records indexed.
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