GB1266489A - - Google Patents

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Publication number
GB1266489A
GB1266489A GB1266489DA GB1266489A GB 1266489 A GB1266489 A GB 1266489A GB 1266489D A GB1266489D A GB 1266489DA GB 1266489 A GB1266489 A GB 1266489A
Authority
GB
United Kingdom
Prior art keywords
nitrated
acid
azo
dyestuff
nitration
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
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 filed Critical
Publication of GB1266489A publication Critical patent/GB1266489A/en
Expired legal-status Critical Current

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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

1,266,489. Nitrated azo dyestuff carboxylic acids. CIBA-GEIGY A.G. 3 June, 1970 [30 June, 1969], No. 26781/70. Heading C4P. 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.
GB1266489D 1969-06-30 1970-06-03 Expired GB1266489A (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
GB1266489A true GB1266489A (en) 1972-03-08

Family

ID=4357873

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1266489D Expired GB1266489A (en) 1969-06-30 1970-06-03

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
NL7009576A (en) 1971-01-04
ES381234A2 (en) 1972-11-01
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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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees