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US3932377A Expired / Lapsed US ⏱️ 0.0 years remaining

Hydrosoluble monoazoic cationic dyes and process for preparing same

Assignee: Aziende Colori Nazionali Affini ACNA SpA
•
Filing: 1973-12-06
•
Granted: 1976-01-13
•
Expires: 1993-12-06
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Abstract

Abstract Hydrosoluble, cationic, azo dyes of the formula: ##SPC1## Wherein: R is an alkyl or aralkyl group; R' is an alkyl group having from 1 to 4 carbon atoms; R" is H, an alkyl group having from 1 to 4 carbon atoms or a halogen; R'" is an alkyl group having from 1 to 4 carbon atoms or a C 1 -C 4 alkyl group substituted by a halogen, cyano, hydroxy, alkoxy or acyloxy group; Y is a cyano, amido, acyloxy or carboalkoxy group; and X is an anion, are obtained by: A. diazotizing a 2-amino-6-alkoxybenzothiazole of the formula (II): ##SPC2## b. coupling the resultant diazo compound in an acid solution with a tertiary amine of the formula (III): ##SPC3## wherein R', R", R'" and Y are as defined above; and C. quaternizing the resultant dye.

Inventors

  • 👤 Fabrizio Merlo
  • 👤 Ruggero Battisti
  • 👤 Danilo Domenis

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 00:57
CPC Classifications
C; C09; C09B; C09B44/00; C09B44/10; C09B44/20

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 72 words
A water soluble, azoic, cationic dye having the formula: ##SPC14## wherein: R is methyl or ethyl; R' is alkyl having from 1 to 4 carbon atoms; R" is hydrogen, alkyl having from 1 to 4 carbon atoms, or halogen; R'" is alkyl having from 1 to 4 carbon atoms, or C 1 -C 4 alkyl substituted by a halogen, cyano or hydroxy; Y is cyano or acetoxy; and X is an anion.
Claim 2
Dependent Claim 72 words
A water soluble, azoic, cationic dye having the formula: ##SPC14## wherein: R is methyl or ethyl; R' is alkyl having from 1 to 4 carbon atoms; R" is hydrogen, alkyl having from 1 to 4 carbon atoms, or halogen; R'" is alkyl having from 1 to 4 carbon atoms, or C 1 -C 4 alkyl substituted by a halogen, cyano or hydroxy; Y is cyano or acetoxy; and X is an anion.
Claim 3
Dependent Claim 26 words
A dye according to claim 1 wherein X is the anion of a mineral acid, a complex acid of a metal halogen or an organic acid.
Claim 4
Dependent Claim 20 words
A dye according to claim 2 wherein the anion of a mineral acid is chloride, bromide, iodide, phosphate or sulfate.
Claim 5
Dependent Claim 19 words
A dye according to claim 2 wherein the anion of a complex acid of a metal halogen is trichloro-zincate.
Claim 6
Dependent Claim 18 words
A dye according to claim 2 wherein the anion of an organic acid is an alkyl-sulfate or aryl-sulfonate.
Claim 7
Dependent Claim 28 words
A dye according to claim 5 wherein the alkyl-sulfate is CH 3 SO 4 - or C 2 H 5 SO n - and the aryl-sulfonate is ##SPC15##
Claim 8
Dependent Claim 11 words
A dye according to claim 1 which is ##SPC16## 4 -
Claim 9
Dependent Claim 9 words
A dye according to claim 1 which is ##SPC17##
Claim 10
Dependent Claim 9 words
A dye according to claim 1 which is ##SPC18##
Claim 11
Dependent Claim 9 words
A dye according to claim 1 which is ##SPC19##
Claim 12
Dependent Claim 9 words
A dye according to claim 1 which is ##SPC20##

References Cited (Backward Citations)

US2864812A Cited
US3097198A Cited
US3335125A Cited
US3342800A Cited
US3280101A Cited
US3405118A Cited
US3442886A Cited
US3634389A Cited
US3709872A Cited
US3763140A Cited
US3816390A Cited

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

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