GB368789A - The manufacture of condensation products of the anthraquinone series - Google Patents

The manufacture of condensation products of the anthraquinone series

Info

Publication number
GB368789A
GB368789A GB3740730A GB3740730A GB368789A GB 368789 A GB368789 A GB 368789A GB 3740730 A GB3740730 A GB 3740730A GB 3740730 A GB3740730 A GB 3740730A GB 368789 A GB368789 A GB 368789A
Authority
GB
United Kingdom
Prior art keywords
give
quinonoid
products
manufacture
condensation products
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
GB3740730A
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
Publication of GB368789A publication Critical patent/GB368789A/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
    • C09B1/48—Anthrimides

Abstract

Anthrimides.--Anthraquinone condensation products of high molecular weight, some of which are dyestuffs, while others are intermediate products for the manufacture of dyestuffs, are obtained by oxidizing a -aminoanthraquinones, or substitution products thereof containing a free p-position to the amino group in dilute acid solution and, if desired, reducing the intermediately-formed quinonoid substances. According to examples, (1) a -aminoanthraquinone is oxidized with manganese dioxide in dilute sulphuric acid solution to give a quinonoid product which is reduced with stannous chloride to give the monoaminotrianthrimide; (2) 1 : 8-aminochloroanthraquinone is treated similarly to give the quinonoid form of the monoamino-trichloro-trianthrimide, followed by reduction; (3) a -methylaminoanthraquinone is treated similarly to give the corresponding products.
GB3740730A 1930-11-08 1930-12-11 The manufacture of condensation products of the anthraquinone series Expired GB368789A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1930I0030530 DE555937C (en) 1930-11-08 1930-11-08 Process for the preparation of high molecular weight condensation products of the anthraquinone series

Publications (1)

Publication Number Publication Date
GB368789A true GB368789A (en) 1932-03-11

Family

ID=34559015

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3740730A Expired GB368789A (en) 1930-11-08 1930-12-11 The manufacture of condensation products of the anthraquinone series

Country Status (4)

Country Link
CH (1) CH156753A (en)
DE (1) DE555937C (en)
FR (1) FR725859A (en)
GB (1) GB368789A (en)

Also Published As

Publication number Publication date
DE555937C (en) 1932-08-01
FR725859A (en) 1932-05-19
CH156753A (en) 1932-08-31

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