GB242620A - Improvements in the manufacture and production of vat dyestuffs of the isodibenzanthrone series - Google Patents

Improvements in the manufacture and production of vat dyestuffs of the isodibenzanthrone series

Info

Publication number
GB242620A
GB242620A GB26801/25A GB2680125A GB242620A GB 242620 A GB242620 A GB 242620A GB 26801/25 A GB26801/25 A GB 26801/25A GB 2680125 A GB2680125 A GB 2680125A GB 242620 A GB242620 A GB 242620A
Authority
GB
United Kingdom
Prior art keywords
benzanthrone
isodibenzanthrone
benzanthronyl
thioethers
heating
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
GB26801/25A
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik 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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB242620A publication Critical patent/GB242620A/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
    • C09B3/22—Dibenzanthrones; Isodibenzanthrones

Landscapes

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

Abstract

Isodibenzanthrone dyes are obtained by treating with alkaline condensing agents, with or without inert diluents, benzanthrone-Bz1-thioethers or substitution derivatives thereof having a free 2-position; alkyl-, aryl-, anthraquinonyl-, benzanthronyl-, &c. thioethers may be used. According to examples, isodibenzanthrone, practically free from dibenzanthrone, is obtained by heating benzanthrone-Bz1-p-thiocresylether or Bz1-Bz11-benzanthronyl sulphide with ethyl alcohol and caustic potash at 135-145 DEG C.; other alcohols or other alkalies may be used. Specification 20837/06 is referred to. Benzanthrone-Bz1-thioethers referred to above can be obtained by condensing Bz1-halogenbenzanthrones with mercaptans in the presence of alkaline agents and solvents or diluents. Benzanthrone-Bz1-p-thiocresylether is made by heating Bz1-chlorbenzanthrone with p-thiocresol and alcoholic potash. Bz1-Bz11-benzanthronyl sulphide is obtained by heating benzanthrone-Bz1-mercaptan with copper and naphthalene.
GB26801/25A 1924-11-07 1925-10-26 Improvements in the manufacture and production of vat dyestuffs of the isodibenzanthrone series Expired GB242620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE242620X 1924-11-07

Publications (1)

Publication Number Publication Date
GB242620A true GB242620A (en) 1926-12-23

Family

ID=5916879

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26801/25A Expired GB242620A (en) 1924-11-07 1925-10-26 Improvements in the manufacture and production of vat dyestuffs of the isodibenzanthrone series

Country Status (1)

Country Link
GB (1) GB242620A (en)

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