ES381234A2 - Procedure for the preparation of insoluble azoic compounds in water. (Machine-translation by Google Translate, not legally binding) - Google Patents

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

Info

Publication number
ES381234A2
ES381234A2 ES381234A ES381234A ES381234A2 ES 381234 A2 ES381234 A2 ES 381234A2 ES 381234 A ES381234 A ES 381234A ES 381234 A ES381234 A ES 381234A ES 381234 A2 ES381234 A2 ES 381234A2
Authority
ES
Spain
Prior art keywords
translation
procedure
preparation
machine
water
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
ES381234A
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
BASF Schweiz AG
Original Assignee
Ciba Geigy AG
Ciba 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
Application filed by Ciba Geigy AG, Ciba AG filed Critical Ciba Geigy AG
Publication of ES381234A2 publication Critical patent/ES381234A2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B43/00—Preparation of azo dyes from other azo compounds
    • C09B43/04—Preparation of azo dyes from other azo compounds by nitration

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Nitrated azo dyestuff carboxylic acids of formula where R is the residue of a diazo component are produced by treating an azo dyestuff of formula with a nitrating agent. The group R is, in particular a benzene residue which may contain substituents. The nitrated azo dyestuffs produced are used as intermediates in the production of pigments derived from 6-nitro-2,3- hydroxy naphthoic acid, e.g. by conversion to the acid chloride followed by condensation with a base, for example 4-benzoylamino-1-amino benzene. Nitration is carried out with nitric acid or a mixture of nitric and sulphuric acid. The nitrating mixture is added to a solution of the dyestuff, preferably a sulphuric acid solution and nitration is carried out below 20 C.
ES381234A 1969-06-30 1970-06-27 Procedure for the preparation of insoluble azoic compounds in water. (Machine-translation by Google Translate, not legally binding) Expired ES381234A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH998769A CH519559A (en) 1969-06-30 1969-06-30 Process for the preparation of nitrated azo carboxylic acids

Publications (1)

Publication Number Publication Date
ES381234A2 true ES381234A2 (en) 1972-11-01

Family

ID=4357873

Family Applications (1)

Application Number Title Priority Date Filing Date
ES381234A Expired ES381234A2 (en) 1969-06-30 1970-06-27 Procedure for the preparation of insoluble azoic compounds in water. (Machine-translation by Google Translate, not legally binding)

Country Status (7)

Country Link
BE (1) BE752666A (en)
CH (1) CH519559A (en)
DE (1) DE2030964A1 (en)
ES (1) ES381234A2 (en)
FR (1) FR2048048B1 (en)
GB (1) GB1266489A (en)
NL (1) NL7009576A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR505007A (en) * 1916-08-01 1920-07-21 Soc Ind Chimique Bale Process for the preparation of nitro derivatives of azo dyes

Also Published As

Publication number Publication date
GB1266489A (en) 1972-03-08
NL7009576A (en) 1971-01-04
FR2048048A1 (en) 1971-03-19
DE2030964A1 (en) 1971-01-14
CH519559A (en) 1972-02-29
FR2048048B1 (en) 1973-10-19
BE752666A (en) 1970-12-29

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