ES400377A1 - Procedure for the preparation of insoluble diazoic colorants in water. (Machine-translation by Google Translate, not legally binding) - Google Patents

Procedure for the preparation of insoluble diazoic colorants in water. (Machine-translation by Google Translate, not legally binding)

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Publication number
ES400377A1
ES400377A1 ES400377A ES400377A ES400377A1 ES 400377 A1 ES400377 A1 ES 400377A1 ES 400377 A ES400377 A ES 400377A ES 400377 A ES400377 A ES 400377A ES 400377 A1 ES400377 A1 ES 400377A1
Authority
ES
Spain
Prior art keywords
insoluble
translation
procedure
preparation
machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES400377A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
Original Assignee
Ciba Geigy AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CH319271A external-priority patent/CH547844A/en
Application filed by Ciba Geigy AG filed Critical Ciba Geigy AG
Publication of ES400377A1 publication Critical patent/ES400377A1/en
Expired legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Procedure for the preparation of disazo dyes, insoluble in water, devoid of acidic hydrosolubilizing groups and corresponding to the formula **(See formula)** in which A and B are aromatic radicals, of which B carries a nitro group, preferably in the meta position with respect to the azo bridge that unites with A, and R1 and R2 are hydrogen atoms or possibly substituted hydrocarbon radicals, characterized by diazolating an aminoazo compound of the formula A-N = N-B-NH2 in which A and B signify aromatic radicals, of which B carries a nitro group in the meta position with respect to the azo group, and, possibly coupled with barbituric acid, optionally N-substituted. (Machine-translation by Google Translate, not legally binding)
ES400377A 1971-03-04 1972-03-03 Procedure for the preparation of insoluble diazoic colorants in water. (Machine-translation by Google Translate, not legally binding) Expired ES400377A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH319271A CH547844A (en) 1971-03-04 1971-03-04 PROCESS FOR THE PRODUCTION OF HYDRO-INSOLUBLE DISAZO COLORS
CH98372 1972-01-24

Publications (1)

Publication Number Publication Date
ES400377A1 true ES400377A1 (en) 1975-06-16

Family

ID=25686305

Family Applications (1)

Application Number Title Priority Date Filing Date
ES400377A Expired ES400377A1 (en) 1971-03-04 1972-03-03 Procedure for the preparation of insoluble diazoic colorants in water. (Machine-translation by Google Translate, not legally binding)

Country Status (1)

Country Link
ES (1) ES400377A1 (en)

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