GB300432A - Improvements in the manufacture and production of vat dyestuffs - Google Patents

Improvements in the manufacture and production of vat dyestuffs

Info

Publication number
GB300432A
GB300432A GB318728A GB318728A GB300432A GB 300432 A GB300432 A GB 300432A GB 318728 A GB318728 A GB 318728A GB 318728 A GB318728 A GB 318728A GB 300432 A GB300432 A GB 300432A
Authority
GB
United Kingdom
Prior art keywords
dibenzanthronyl
aminoanthraquinone
molecular parts
dibenzanthronyls
tetrabrom
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
GB318728A
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
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB318728A priority Critical patent/GB300432A/en
Publication of GB300432A publication Critical patent/GB300432A/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
    • C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
    • C09B3/02—Benzathrones
    • C09B3/12—Dibenzanthronyls

Landscapes

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

Abstract

300,432. Johnsonn, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Feb. 1, 1928. Anthraquinone vat dyes are obtained by condensing a tetrahalogen-2 : 2<1>-dibenzanthronyl with an aminoanthraquinone, preferably in presence of acid-fixing agents and of catalysts such as copper or its salts. The condensation appears to proceed further than to anthraquinonylamino-2 2<1>- dibenzanthronyls. In examples, tetrabrom-2 2<1>- dibenzanthronyl is condensed with cupric oxide and calcined soda as assistants, and without any diluent, with two molecular parts of a- or #- aminoanthraquinone, 2-amino-3-chloranthraquinone, or a- or #-aminoalizarin, or, in nitrobenzene as solvent, with two molecular parts of aaminoanthraq uinone, 1-amino-4-methoxyanthraquinone, or 1 : 6-diaminoanthraquinone; dibrom- 6 : 6<1>-dichlordibenzanthronyl is condensed with two molecular parts of alpha-aminoanthraquinone, in nitrobenzene solution, with copper oxide and calcined soda as assistants. Dibenzanthronyls. - Tetrabrom-2: 2'dibenzanthronyl is prepared by brominating 2 : 2<1>-di benzanthronyl in chlorsulphonic acid, or with excess of liquid bromine. Dibrom-6 : 6<1>-dichlor- 2 : 2<1>-dibenzanthronyl is prepared by introducing 6 : 6<1>-dichlor-2 : 2<1>-dibenzanthronyl into excess of bromine.
GB318728A 1928-02-01 1928-02-01 Improvements in the manufacture and production of vat dyestuffs Expired GB300432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB318728A GB300432A (en) 1928-02-01 1928-02-01 Improvements in the manufacture and production of vat dyestuffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB318728A GB300432A (en) 1928-02-01 1928-02-01 Improvements in the manufacture and production of vat dyestuffs

Publications (1)

Publication Number Publication Date
GB300432A true GB300432A (en) 1928-11-15

Family

ID=9753559

Family Applications (1)

Application Number Title Priority Date Filing Date
GB318728A Expired GB300432A (en) 1928-02-01 1928-02-01 Improvements in the manufacture and production of vat dyestuffs

Country Status (1)

Country Link
GB (1) GB300432A (en)

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