GB344777A - Improvements in the manufacture and production of vat dyestuffs of the n-dihydro-1.2.2.1.-anthraquinoneazine series - Google Patents

Improvements in the manufacture and production of vat dyestuffs of the n-dihydro-1.2.2.1.-anthraquinoneazine series

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Publication number
GB344777A
GB344777A GB2986029A GB2986029A GB344777A GB 344777 A GB344777 A GB 344777A GB 2986029 A GB2986029 A GB 2986029A GB 2986029 A GB2986029 A GB 2986029A GB 344777 A GB344777 A GB 344777A
Authority
GB
United Kingdom
Prior art keywords
dihydro
nitrobenzene
anthraquinoneazine
manufacture
series
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
GB2986029A
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 GB2986029A priority Critical patent/GB344777A/en
Publication of GB344777A publication Critical patent/GB344777A/en
Expired legal-status Critical Current

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Abstract

Indanthrone dyes.-Halogenated vat dyestuffs are obtained by treating the products of the process of Specification 322,281, [Class 2 (iii), Dyes &c.], with halogens or agents supplying halogen, if desired, in the presence of solvents, catalysts, or acid-binding agents. According to examples, the product of example 1 of the said Specification is treated with sulphuryl chloride in nitrobenzene; and the product of example 3 of the said Specification is treated with sulphuryl chloride in nitrobenzene, chlorine in trichlorbenzene, bromine in nitrobenzene; and with chlorine in nitrososulphuric acid, to give probably the corresponding azine, which may be reduced with sodium bisulphite to the dihydro-compound. Specification 20527/04, [Class 2, Acids and salts, Organic &c.], also is referred to.
GB2986029A 1929-10-02 1929-10-02 Improvements in the manufacture and production of vat dyestuffs of the n-dihydro-1.2.2.1.-anthraquinoneazine series Expired GB344777A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2986029A GB344777A (en) 1929-10-02 1929-10-02 Improvements in the manufacture and production of vat dyestuffs of the n-dihydro-1.2.2.1.-anthraquinoneazine series

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2986029A GB344777A (en) 1929-10-02 1929-10-02 Improvements in the manufacture and production of vat dyestuffs of the n-dihydro-1.2.2.1.-anthraquinoneazine series

Publications (1)

Publication Number Publication Date
GB344777A true GB344777A (en) 1931-03-02

Family

ID=10298366

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2986029A Expired GB344777A (en) 1929-10-02 1929-10-02 Improvements in the manufacture and production of vat dyestuffs of the n-dihydro-1.2.2.1.-anthraquinoneazine series

Country Status (1)

Country Link
GB (1) GB344777A (en)

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