GB301197A - Improvements in the manufacture and production of vat dyestuffs - Google Patents

Improvements in the manufacture and production of vat dyestuffs

Info

Publication number
GB301197A
GB301197A GB3121827A GB3121827A GB301197A GB 301197 A GB301197 A GB 301197A GB 3121827 A GB3121827 A GB 3121827A GB 3121827 A GB3121827 A GB 3121827A GB 301197 A GB301197 A GB 301197A
Authority
GB
United Kingdom
Prior art keywords
aminobenzanthrones
sulphuric acid
aminobenzanthrone
potash
gives
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
GB3121827A
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 GB3121827A priority Critical patent/GB301197A/en
Publication of GB301197A publication Critical patent/GB301197A/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
    • C09B3/10—Amino derivatives

Abstract

301,197. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Nov. 21, 1927. Addition to 289,980. Dibenzanthrone and isodibenzanthrone dyes are obtained by alkali fusion of 5-, 6-, 7-, and 8- aminobenzanthrones. In examples, dyes giving a bordeaux-red solution in sulphuric acid are obtained by alkali fusion, with caustic potash at 230‹ C., or 5-, 6-, and 7-aminobenzanthrones, and dye blue, green-grey, and violet respectively. A mixture of the two last products in the proportions of 4 to 1 respectively dyes cotton a deep black. By alkali fusion with 55 per cent alcoholic potash at 150‹ C., 5-aminobenzanthrone gives the same product as with caustic potash alone at 230‹ C., but 6-aminobenzanthrone, with alcoholic potash at 170‹ C., gives a dye soluble in sulphuric acid to a grey-green solution, and dyeing grey-violet, and 8-aminobenzanthrone, with alcoholic potash at 150‹ C., gives a dye soluble in sulphuric acid to a green solution, and dyeing greyish-blue. Specifications 12518/06 and 254,742 are referred to. Aminobenzanthrones. 5-, 6-, 7-, and 8-Aminobenzanthrones are obtained from the corresponding halogen derivatives by the action of ammonia at elevated temperatures. Chlorbenzanthrone. a-Chloranthraquinone is condensed with glycerine and sulphuric acid, and the mixture of 4-, 5-, and 8-chlorbenzanthrones separated by fractional crystallization. They melt at 152‹ C., 183‹ C., and 174‹ C. respectively.
GB3121827A 1927-11-21 1927-11-21 Improvements in the manufacture and production of vat dyestuffs Expired GB301197A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3121827A GB301197A (en) 1927-11-21 1927-11-21 Improvements in the manufacture and production of vat dyestuffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3121827A GB301197A (en) 1927-11-21 1927-11-21 Improvements in the manufacture and production of vat dyestuffs

Publications (1)

Publication Number Publication Date
GB301197A true GB301197A (en) 1928-11-29

Family

ID=10319797

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3121827A Expired GB301197A (en) 1927-11-21 1927-11-21 Improvements in the manufacture and production of vat dyestuffs

Country Status (1)

Country Link
GB (1) GB301197A (en)

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