GB190629765A - Manufacture of Vat Dyestuffs. - Google Patents

Manufacture of Vat Dyestuffs.

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Publication number
GB190629765A
GB190629765A GB190629765DA GB190629765A GB 190629765 A GB190629765 A GB 190629765A GB 190629765D A GB190629765D A GB 190629765DA GB 190629765 A GB190629765 A GB 190629765A
Authority
GB
United Kingdom
Prior art keywords
acids
dichlor
carboxylic
phenylthioglycollico
chlorphenylthioglycollic
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
Inventor
Oliver Imray
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB190629765A publication Critical patent/GB190629765A/en
Expired legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

29,765. Imray, O., [Farbwerke vorm. Meister, Lucius, & Br³mng]. Dec. 31. Dyes, artificial.-Vat dye-stuffs of the thioindigo series are obtained by heating phenylthioglycollico-carboxylic acid or its homologues (tolyl-, xylyl-, &c.), or the halogen substitution products thereof, with a bisulphite solution at temperatures above 150‹ C. under pressure. Examples are given of the production of dyes from phenylthioglycollico-carboxylic acid, 1:2:4- and 1 : 2: 5-tolylthioglycollic - o - carboxylic acids, and 1 : 2 : 4- and 1 : 2 : 5 - chlorphenylthioglycollic - o - carboxylic acids ; the dichlor derivatives or the brom derivatives may also be employed. Chlorphenylthioglycollic-o-carboxylic acids.-The 1 : 2 : 4- and 1 : 2 : 5-acids may be obtained from the corresponding chloranthranilic acids, and the dichlor-acids from the dichloranthranilic acids, obtainable by chlorinating anthranilic acid, or by chlorinating o-acettoluidide, oxidizing the dichlor derivative, and hydrolyzing the product.
GB190629765D 1906-12-31 1906-12-31 Manufacture of Vat Dyestuffs. Expired GB190629765A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190629765T 1906-12-31

Publications (1)

Publication Number Publication Date
GB190629765A true GB190629765A (en) 1907-12-12

Family

ID=32258126

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190629765D Expired GB190629765A (en) 1906-12-31 1906-12-31 Manufacture of Vat Dyestuffs.

Country Status (1)

Country Link
GB (1) GB190629765A (en)

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