GB517456A - Improvements in or relating to the manufacture of azo pigments - Google Patents

Improvements in or relating to the manufacture of azo pigments

Info

Publication number
GB517456A
GB517456A GB22532/38A GB2253238A GB517456A GB 517456 A GB517456 A GB 517456A GB 22532/38 A GB22532/38 A GB 22532/38A GB 2253238 A GB2253238 A GB 2253238A GB 517456 A GB517456 A GB 517456A
Authority
GB
United Kingdom
Prior art keywords
acid
naphthol
sulphonic acid
toluidine
nitraniline
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
GB22532/38A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB517456A publication Critical patent/GB517456A/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
    • C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0033—Blends of pigments; Mixtured crystals; Solid solutions
    • C09B67/0046—Mixtures of two or more azo dyes
    • C09B67/0051—Mixtures of two or more azo dyes mixture of two or more monoazo dyes

Landscapes

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

Abstract

517,456. Pigments. DU PONT DE NEMOURS & CO., E. I. July 28, 1938, No. 22532. Convention date, July 28, 1937. [Class 2 (iii)] Azo pigments are prepared by coupling a diazo-component with a coupling component in the presence of one or more preformed accessory azo dyestuffs, incapable of diazotization or coupling, or such preformed dyestuff is added immediately subsequently to the completion of this reaction or within 24 hours thereof and prior to the removal of the principal dyestuff from the coupling medium or prior to the formation of the metallic lake. In examples (1) p-nitraniline is diazotized and coupled with. #-naphthol in the presence of p-nitraniline# 2- naphthol-7-sulphonic acid, p - nitraniline # 1- phenyl - 3 - methyl - 5 - pyrazolone or a mixture thereof or m-nitraniline # 2-naphthol-7- sulphonic acid ; (2) 2 - naphthylamine - 1 - sulphonic acid is diazotised and coupled with #-naphthol in the presence of 2-naphthylamine - 1 - sulphonic acid # 1 - phenyl - 3 - methyl - 5 - pyrazolone, 2 - naphthylamine - 4.8 - disulphonic acid # # - naphthol, o - naphthionic acid # # - naphthol, p - nitraniline # 2 - naphthol - 6 - sulphonic acid or pnitraniline # 2 - naphthol - 7 - sulphonic acid and converted into a barium or calcium lake; (3) 2 - naphthylamine - 1 - sulphonic acid is diazotized and coupled with #-oxynaphthoic acid in the presence of 2-naphthylamine-6- sulphonic acid # # - oxynaphthoic acid or o-naphthionic acid # # -oxynaphthoic acid and converted into a calcium lake ; (4) to (8) the following are the principal dyes : m-nitrop - toluidine # # -naphthol, 2 - chlor - 5 - toluidine - 4 - sulphonic acid # # -naphthol, 4 - toluidine - 3 - sulphonic acid # # - oxynaphthoic acid, 4 - chlor - 2 - nitraniline # acetoaceto-chloranilide and 2-chlor-4-toluidine-5-sulphonic acid # # - oxynaphthoic acid and the following the accessory dyes : m-nitro-ptoluidine # 1 - phenyl - 3 - methyl - 5 - pyrazolone or 2 - naphthol - 1 - sulphonic acid, 2 - chlor - 5 - toluidine - 4 - sulphonic acid # 1 - phenyl - 3 - methyl - 5 - pyrazolone, 2 - chlor- 4 - toluidine - 5 - sulphonic acid # # - naphthol, 4 - toluidine - 2 - sulphonic acid # # - oxynaphthoic acid, o - nitraniline # acetoacet - o - chloranilide and 2 - chlor - 4 - toluidine # # - oxynaphthoic acid.
GB22532/38A 1937-07-28 1938-07-28 Improvements in or relating to the manufacture of azo pigments Expired GB517456A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US517456XA 1937-07-28 1937-07-28

Publications (1)

Publication Number Publication Date
GB517456A true GB517456A (en) 1940-01-30

Family

ID=21973135

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22532/38A Expired GB517456A (en) 1937-07-28 1938-07-28 Improvements in or relating to the manufacture of azo pigments

Country Status (1)

Country Link
GB (1) GB517456A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251441A (en) * 1977-06-18 1981-02-17 Hoechst Aktiengesellschaft Pigments of mixtures of methoxynitrobenzene-azo-methoxy-acetanilides
WO2000026303A1 (en) * 1998-10-31 2000-05-11 Ciba Specialty Chemicals Holding Inc. Solid solutions of monoazo pigments

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251441A (en) * 1977-06-18 1981-02-17 Hoechst Aktiengesellschaft Pigments of mixtures of methoxynitrobenzene-azo-methoxy-acetanilides
DE2727531C2 (en) * 1977-06-18 1990-02-15 Hoechst Ag, 6230 Frankfurt, De
WO2000026303A1 (en) * 1998-10-31 2000-05-11 Ciba Specialty Chemicals Holding Inc. Solid solutions of monoazo pigments
US6482257B1 (en) 1998-10-31 2002-11-19 Ciba Specialty Chemicals Corporation Solid solutions of monoazo pigments

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