GB348170A - 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
GB348170A
GB348170A GB85830A GB85830A GB348170A GB 348170 A GB348170 A GB 348170A GB 85830 A GB85830 A GB 85830A GB 85830 A GB85830 A GB 85830A GB 348170 A GB348170 A GB 348170A
Authority
GB
United Kingdom
Prior art keywords
acid
media
class
condensation products
anthraquinoneazine
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
GB85830A
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 GB85830A priority Critical patent/GB348170A/en
Publication of GB348170A publication Critical patent/GB348170A/en
Expired legal-status Critical Current

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Abstract

Indanthrone-formaldehyde condensation products dyeing greener shades than the initial materials are obtained by heating the condensation products obtained according to the process of Specification 20527/04, [Class 2, Acids and salts, Organic &c.], or 343,994, for example, by themselves, or with inert, neutral, acid or weakly alkaline inorganic media, or inert organic media. Media exemplified are carbon dioxide, benzophenone, dilute sulphuric acid, and phosphoric acid, and others specified are sodium chloride, water, benzene, nitrobenzene, weak alkalis, alkylamines, cyclohexylamine, di-and tri-ethanolamine, and weak acid salts of alkali metals. An example is also given in which the material is heated alone to 250 DEG C. The dyestuffs may be treated with halogens or halogenating agents. Specifications 322,281, [Class 2 (iii), Dyes &c.], and 344,777 also are referred to.
GB85830A 1930-01-09 1930-01-09 Improvements in the manufacture and production of vat dyestuffs of the n-dihydro-1.2.2.1-anthraquinoneazine series Expired GB348170A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB85830A GB348170A (en) 1930-01-09 1930-01-09 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
GB85830A GB348170A (en) 1930-01-09 1930-01-09 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
GB348170A true GB348170A (en) 1931-05-11

Family

ID=9711715

Family Applications (1)

Application Number Title Priority Date Filing Date
GB85830A Expired GB348170A (en) 1930-01-09 1930-01-09 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) GB348170A (en)

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