GB349361A - Manufacture of vat-dyestuffs - Google Patents

Manufacture of vat-dyestuffs

Info

Publication number
GB349361A
GB349361A GB21550/30A GB2155030A GB349361A GB 349361 A GB349361 A GB 349361A GB 21550/30 A GB21550/30 A GB 21550/30A GB 2155030 A GB2155030 A GB 2155030A GB 349361 A GB349361 A GB 349361A
Authority
GB
United Kingdom
Prior art keywords
isatin
condensed
derivative
prepared
anilide
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
GB21550/30A
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 GB349361A publication Critical patent/GB349361A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K27/00—AC commutator motors or generators having mechanical commutator
    • H02K27/04—AC commutator motors or generators having mechanical commutator having single-phase operation in series or shunt connection
    • H02K27/06—AC commutator motors or generators having mechanical commutator having single-phase operation in series or shunt connection with a single or multiple short-circuited commutator, e.g. repulsion motor
    • 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
    • C09B7/00—Indigoid dyes
    • C09B7/08—Other indole-indigos

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A compound of the general formula: <PICT:0349361/IV/1> wherein the nucleus R may contain one or more substituents, is condensed with an isatin-a -derivative to give fast greenish-blue to green dyestuffs. The a -anthrone compounds of the above general formula are obtained by treating the reduction products of acylated-1.4-dihydroxyanthraquinones (prepared according to Specification 340,639) with an alcohol in the presence of a mineral acid. In examples: (1) 1-hydroxy-4-acetoxy-10-anthrone (prepared by reducing diacetylquinizarin in an acetic acid suspension with sodium hydrosulphite) is converted to the monomethylether of 1.4-dihydroxyanthrone by boiling with methanol and hydrochloric acid, and this ether is condensed with isatin-a -anilide; the corresponding monoethylether may be prepared by using ethylinstead of methyl alcohol and may similarly be condensed with isatin-a -anilide or with 5-chlorisatin-a -p-chloranilide: (2) 5-8-dichloro-1-hydroxy-4-acetoxy-10-anthrone (prepared by reducing diacetyl-5-8-dichlorquinizarin) is converted to a monomethyletherdichloro derivative by boiling with methanol and hydrochloric acid, and this derivative is condensed with isatin-a -anilide. It is also stated that the reduction products of 1-acetoxy- and 1.8-diacetoxyanthraquinone cannot be thus condensed with an isatin-a -derivative.
GB21550/30A 1929-07-16 1930-07-16 Manufacture of vat-dyestuffs Expired GB349361A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE349361X 1929-07-16

Publications (1)

Publication Number Publication Date
GB349361A true GB349361A (en) 1931-05-28

Family

ID=6258444

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21550/30A Expired GB349361A (en) 1929-07-16 1930-07-16 Manufacture of vat-dyestuffs

Country Status (2)

Country Link
FR (1) FR349361A (en)
GB (1) GB349361A (en)

Also Published As

Publication number Publication date
FR349361A (en) 1905-05-26

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