GB598797A - Production of anthraquinone compounds - Google Patents

Production of anthraquinone compounds

Info

Publication number
GB598797A
GB598797A GB23306/45A GB2330645A GB598797A GB 598797 A GB598797 A GB 598797A GB 23306/45 A GB23306/45 A GB 23306/45A GB 2330645 A GB2330645 A GB 2330645A GB 598797 A GB598797 A GB 598797A
Authority
GB
United Kingdom
Prior art keywords
amino
per cent
sulphoanthraquinone
bromanthraquinone
sulpho
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
GB23306/45A
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.)
Acordis UK Ltd
Original Assignee
British Celanese Ltd
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 British Celanese Ltd filed Critical British Celanese Ltd
Publication of GB598797A publication Critical patent/GB598797A/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

1-Amino-2-sulpho-4-bromanthraquinone is prepared by brominating 1-amino-2-sulphoanthraquinone in an aqueous acid containing an inorganic salt in such concentration that 1-amino-2-sulpho-4-bromanthraquinone precipitates as it forms without precipitation of the 1-amino-2-sulphoanthraquinone. Acids specified are hydrochloric and sulphuric acids, and salts specified are sodium and potassium chlorides, and sodium sulphate. The reaction mixture after bromination may be mixed with hot water to redissolve the 1-amino-2-sulpho-4-bromanthraquinone, and any 1-amino-2 : 4-dibromoanthraquinone filtered off. An example is given using sodium chloride and hydrochloric acid. The 1-amino-2-sulphoanthraquinone is preferably in a concentration of 2-4 per cent based on the weight of water present, and the bromine is preferably added as a 10 per cent solution in 15-20 per cent hydrochloric acid, 10 per cent excess bromine being used to compensate for any dibromination.
GB23306/45A 1944-09-13 1945-09-10 Production of anthraquinone compounds Expired GB598797A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US598797XA 1944-09-13 1944-09-13

Publications (1)

Publication Number Publication Date
GB598797A true GB598797A (en) 1948-02-26

Family

ID=22025881

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23306/45A Expired GB598797A (en) 1944-09-13 1945-09-10 Production of anthraquinone compounds

Country Status (1)

Country Link
GB (1) GB598797A (en)

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