GB190808381A - Manufacture of New Products from Thio-indigo Dyestuffs - Google Patents

Manufacture of New Products from Thio-indigo Dyestuffs

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Publication number
GB190808381A
GB190808381A GB190808381DA GB190808381A GB 190808381 A GB190808381 A GB 190808381A GB 190808381D A GB190808381D A GB 190808381DA GB 190808381 A GB190808381 A GB 190808381A
Authority
GB
United Kingdom
Prior art keywords
thioindigo
products
oxide
dyes
thio
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 GB190808381A publication Critical patent/GB190808381A/en
Expired legal-status Critical Current

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  • Coloring (AREA)
  • Indole Compounds (AREA)

Abstract

8381. Imray, O., [Farbwerke vorm. Meister, Lucius, & Br³ning]. April 15. Samples furnished under Section 2 of Patents &c. Act, 1907. Dyes, artificial. - Products termed thioindigo oxides are obtained by oxidizing thioindigo dyes. According to examples, thioindigo is oxidized by concentrated nitric acid or by a mixture of sodium bichromate and sulphuric acid. Similar products are obtained from homologues of thioindigo, or chlor, brom, methoxy, ethylthio, and like substitution products thereof. The products are soluble in alkaline reducing-agents, yielding vats for dyeing ; or textile fibre may be impregnated or printed with a solution of say thioindigo oxide or dimethoxythioindigo oxide in sodium sulphite solution, and then dried and passed through dilute hydrochloric acid, red tints being thereby produced.
GB190808381D 1908-04-15 1908-04-15 Manufacture of New Products from Thio-indigo Dyestuffs Expired GB190808381A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190808381T 1908-04-15

Publications (1)

Publication Number Publication Date
GB190808381A true GB190808381A (en) 1908-12-03

Family

ID=32208234

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190808381D Expired GB190808381A (en) 1908-04-15 1908-04-15 Manufacture of New Products from Thio-indigo Dyestuffs

Country Status (1)

Country Link
GB (1) GB190808381A (en)

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