GB276766A - Improvements in the manufacture of benzanthrone derivatives - Google Patents

Improvements in the manufacture of benzanthrone derivatives

Info

Publication number
GB276766A
GB276766A GB1551526A GB1551526A GB276766A GB 276766 A GB276766 A GB 276766A GB 1551526 A GB1551526 A GB 1551526A GB 1551526 A GB1551526 A GB 1551526A GB 276766 A GB276766 A GB 276766A
Authority
GB
United Kingdom
Prior art keywords
benzanthrone
manufacture
sulphonic acids
sulphuric acid
dyestuffs
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
GB1551526A
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 GB1551526A priority Critical patent/GB276766A/en
Publication of GB276766A publication Critical patent/GB276766A/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
    • C09B3/06—Preparation from starting materials already containing the benzanthrone nucleus

Abstract

276,766. British Dyestuffs Corporation, Ltd., Baddiley, J., Shepherdson, A., and Thornley, S. June 19, 1926. Benzanthrone sulphonic acids; dibenzanthrone dyes.-Benzanthrone is treated with sulphonating agents such as concentrated sulphuric acid, sulphuric acid monohydrate. or oleum, with or without the addition of catalysts such as mercury or boric acid. The sulphonic acids so. obtained yield, by caustic-alkali fusion, dyestuffs which dye cotton from the vat in reddishblue shades. Examples of the processes are given. Specification 16538/04 is referred to.
GB1551526A 1926-06-19 1926-06-19 Improvements in the manufacture of benzanthrone derivatives Expired GB276766A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1551526A GB276766A (en) 1926-06-19 1926-06-19 Improvements in the manufacture of benzanthrone derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1551526A GB276766A (en) 1926-06-19 1926-06-19 Improvements in the manufacture of benzanthrone derivatives

Publications (1)

Publication Number Publication Date
GB276766A true GB276766A (en) 1927-09-08

Family

ID=10060477

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1551526A Expired GB276766A (en) 1926-06-19 1926-06-19 Improvements in the manufacture of benzanthrone derivatives

Country Status (1)

Country Link
GB (1) GB276766A (en)

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