GB446971A - Manufacture of 2-aminoanthraquinone-sulphonic acids - Google Patents

Manufacture of 2-aminoanthraquinone-sulphonic acids

Info

Publication number
GB446971A
GB446971A GB3186434A GB3186434A GB446971A GB 446971 A GB446971 A GB 446971A GB 3186434 A GB3186434 A GB 3186434A GB 3186434 A GB3186434 A GB 3186434A GB 446971 A GB446971 A GB 446971A
Authority
GB
United Kingdom
Prior art keywords
aminoanthraquinone
product
diazotization
coupling
naphthol
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
GB3186434A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 to FR780851D priority Critical patent/FR780851A/en
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB3186434A priority patent/GB446971A/en
Publication of GB446971A publication Critical patent/GB446971A/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
    • C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
    • C09B1/16—Amino-anthraquinones
    • C09B1/20—Preparation from starting materials already containing the anthracene nucleus
    • C09B1/22—Dyes with unsubstituted amino groups
    • C09B1/24—Dyes with unsubstituted amino groups sulfonated

Landscapes

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

Abstract

2-Aminoanthraquinone is disulphonated by treating it at raised temperature with sulphuric acid containing sulphuric anhydride until a test sample remains dissolved when poured into water and heated with an excess of bromine. The product contains sulphonic groups in the 3- and probably in the 6- and/or 7-positions. The product may be converted by bromination into a 1 : 3-dibromo-2-aminoanthraquinone sulphonic acid. In the examples: (1) 2-aminoanthraquinone is sulphonated as described above at 145--150 DEG C.; the product yields a red dye on diazotization and coupling with b -naphthol; (2) the disulphonic acid obtained according to example (1) is brominated to give a product which on diazotization and coupling with b -naphthol gives a bluish-red dye.
GB3186434A 1934-11-06 1934-11-06 Manufacture of 2-aminoanthraquinone-sulphonic acids Expired GB446971A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR780851D FR780851A (en) 1934-11-06 1934-11-05 Process for preparing 2-aminoanthraquinone-disulfonic acids
GB3186434A GB446971A (en) 1934-11-06 1934-11-06 Manufacture of 2-aminoanthraquinone-sulphonic acids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3186434A GB446971A (en) 1934-11-06 1934-11-06 Manufacture of 2-aminoanthraquinone-sulphonic acids

Publications (1)

Publication Number Publication Date
GB446971A true GB446971A (en) 1936-05-06

Family

ID=10329536

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3186434A Expired GB446971A (en) 1934-11-06 1934-11-06 Manufacture of 2-aminoanthraquinone-sulphonic acids

Country Status (2)

Country Link
FR (1) FR780851A (en)
GB (1) GB446971A (en)

Also Published As

Publication number Publication date
FR780851A (en) 1935-05-04

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