GB276768A - Process for the manufacture of new vat dyes - Google Patents

Process for the manufacture of new vat dyes

Info

Publication number
GB276768A
GB276768A GB1560926A GB1560926A GB276768A GB 276768 A GB276768 A GB 276768A GB 1560926 A GB1560926 A GB 1560926A GB 1560926 A GB1560926 A GB 1560926A GB 276768 A GB276768 A GB 276768A
Authority
GB
United Kingdom
Prior art keywords
treated
product
alkali
hydroxydibenzanthrone
benzanthrone
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
GB1560926A
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.)
Imperial Chemical Industries Ltd
Original Assignee
British Dyestuffs Corp 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 Dyestuffs Corp Ltd filed Critical British Dyestuffs Corp Ltd
Priority to GB1560926A priority Critical patent/GB276768A/en
Publication of GB276768A publication Critical patent/GB276768A/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
    • C09B3/30—Preparation from starting materials already containing the dibenzanthrone or isodibenzanthrone nucleus
    • C09B3/36—Preparation from starting materials already containing the dibenzanthrone or isodibenzanthrone nucleus by etherification of hydroxy compounds

Landscapes

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

Abstract

276,768. British Dyestuffs Corporation, Ltd., Baddiley, J., Shepherdson, A., and Thornley, S. June 21, 1926. Dibenzanthrone dyes.-The dyestuffs obtained by alkali fusion of benzanthrone sulphonation products, as described in Specification 276,766, are treated with alkylating agents, or first with oxidizing agents and then with alkylating agents; the oxidized products may be treated with reducing agents prior to alkylation. According to examples, (1) the alkali-fusion product of sulphonated benzanthrone (hydroxydibenzanthrone) is treated with dimethylsulphate in nitrobenzene; the methylation product dyes cotton in blue shades from the vat; (2) the same hydroxydibenzanthrone is oxidized with manganese dioxide in sulphuric acid, reduced by boiling with bisulphite solution, and methylated; the product dyes cotton in greenish-blue shades: the oxidation product and its reduced derivative also dye cotton, but the green shades so obtained are not fast to acid and alkali.
GB1560926A 1926-06-21 1926-06-21 Process for the manufacture of new vat dyes Expired GB276768A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1560926A GB276768A (en) 1926-06-21 1926-06-21 Process for the manufacture of new vat dyes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1560926A GB276768A (en) 1926-06-21 1926-06-21 Process for the manufacture of new vat dyes

Publications (1)

Publication Number Publication Date
GB276768A true GB276768A (en) 1927-09-08

Family

ID=10062213

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1560926A Expired GB276768A (en) 1926-06-21 1926-06-21 Process for the manufacture of new vat dyes

Country Status (1)

Country Link
GB (1) GB276768A (en)

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