GB190116957A - Manufacture of Disazo-dyestuffs for Wool and an Intermediate Product. - Google Patents

Manufacture of Disazo-dyestuffs for Wool and an Intermediate Product.

Info

Publication number
GB190116957A
GB190116957A GB190116957DA GB190116957A GB 190116957 A GB190116957 A GB 190116957A GB 190116957D A GB190116957D A GB 190116957DA GB 190116957 A GB190116957 A GB 190116957A
Authority
GB
United Kingdom
Prior art keywords
manufacture
sulphonic acid
dyes
wool
disazo
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 GB190116957A publication Critical patent/GB190116957A/en
Expired legal-status Critical Current

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

Abstract

16,957. Imray, O., [Farbwerke vorm. Meister, Lucius, & Br³ning]. Aug. 23. o-p-Diamidophenol-o-sulphonic acid is produced by reducing o-p-dinitrophenol-o-sulphonic acid with the usual reducing-agents, for example, tin and hydrochloric acid. Dyes, artificial.-The foregoing diamidophenol sulphonic acid may be used for the manufacture of diazo dyes. For example, it is converted into its tetrazo compound, and this is combined with two molecular proportions of #-naphthol. The product is sparingly soluble, and dyes wool brown shades which become black on subsequent treatment with bichromate.
GB190116957D 1901-08-23 1901-08-23 Manufacture of Disazo-dyestuffs for Wool and an Intermediate Product. Expired GB190116957A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190116957T 1901-08-23

Publications (1)

Publication Number Publication Date
GB190116957A true GB190116957A (en) 1902-07-17

Family

ID=32424501

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190116957D Expired GB190116957A (en) 1901-08-23 1901-08-23 Manufacture of Disazo-dyestuffs for Wool and an Intermediate Product.

Country Status (1)

Country Link
GB (1) GB190116957A (en)

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