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Hoechst AG
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Hoechst AG
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Publication of GB191020970ApublicationCriticalpatent/GB191020970A/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
20,970. Farbwerke vorm. Meister, Lucius, & Br³ning. Sept. 28, 1909, [Convention date]. Dianthraquinonylaminethioxanthones, which are vat dyes, are obtained by condensing amino- or halogen-anthraquinonethioxanthones with halogen- or amino-anthraquinones respectively. Products are specified from the following pairs of parent materials:-1-aminoanthraquinone- 5:6-thioxanthone and 1-chloranthraquinone, 1:5-dichloranthraquinone, or 1-chloranthraquinone-5:6-thioxanthone ; 1-chloranthraquinone- 5:6-thioxanthone and 1- or 2-aminoanthraquinone. Aminoanthraquinonethioxanthones are obtained by treating aminoanthraquinonythiosalicylic acids with chlorsulphonic acid. Aminoanthraquinonylthiosalicylic acids are obtained by condensing amino-alpha-chloranthraquinones with thiosalicylic acid.
GB191020970D1909-09-281910-09-08Manufacture of Vat Dyestuffs.
ExpiredGB191020970A
(en)
Improvements in the Manufacture and Production of Colouring Matter of the Anthracene Series, and the Treatment and Employment thereof for Dyeing and Printing.