GB191403796A - Process for Producing Azodyestuffs. - Google Patents

Process for Producing Azodyestuffs.

Info

Publication number
GB191403796A
GB191403796A GB191403796DA GB191403796A GB 191403796 A GB191403796 A GB 191403796A GB 191403796D A GB191403796D A GB 191403796DA GB 191403796 A GB191403796 A GB 191403796A
Authority
GB
United Kingdom
Prior art keywords
acid
naphthol
sulphonic
products
diazotized
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
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.)
Bayer AG
Original Assignee
Farbenfabriken Vorm Friedr Bayer and Co
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 Farbenfabriken Vorm Friedr Bayer and Co filed Critical Farbenfabriken Vorm Friedr Bayer and Co
Application granted granted Critical
Publication of GB191403796A publication Critical patent/GB191403796A/en
Expired legal-status Critical Current

Links

Landscapes

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

Abstract

3796. Farbenfabriken vorm. F. Bayer & Co. March 11, 1913, [Convention date]. Samples furnished. Azo dyes; oxynaphthalene sulphonic esters and sulphonamides and derivatives thereof.-Azo dyes are obtained by combining diazo, diazoazo, or tetrazo compounds, or the intermediate products from one molecule of a tetrazo compound and one molecule of an azo dye component, with the products formed by condensing 2- naphthol-1-carboxylic-6-sulphochloride with phenols, naphthols. amines, aminophenols. aminonaphthols, or their carboxylic, sulphonic, &c. derivatives, and splitting off the carboxylic group if desired. If the carboxylic group is not previously removed, it splits off during the formation of the azo dye. Some of the above products are capable of coupling with two molecules of diazo compound. According to examples:-diazotized o-sulphanilic acid is combined with 2-naphthol-6-sulphophenolester giving an orange wool dye; the corresponding naphtholesters or the homologues, sulphonic acids, or substitution products of these esters may be used; 2-anisidine-4-sulphonic acid is diazotized and combined with 2-naphthol-6-sulphonanilide giving a yellowish-red wool dye; the condensation products with toludines, methylaniline, sulphanilic acid, naphthylamines, &c. may also be used; naphthionic acid is diazotized and combined with 2-naphtltol-6-sulphonyl-paminosalicylic acid, giving a red wool dye which yields bluish-red shades on after-treatment with chromium acetate; the condensation products with aminocresotinic acids, 5-sulpho-3-amino-6- oxybenzoic acid, aminophenols such as 4-chlor-2- aminophenol-6-sulphonic acid, &c. may be used; two molecules of aniline are diazotized and combined with the condensation product from the sulphochloride and 1-amino-8-naphthol-3:6-disulphonic acid, giving a yellowish-scarlet wool dye; condensation products from other aminonaphthol sulphonic acids, such as the 1:8:4:6- or the 2:5:7-acid, or aminonaphthols, for example 1-amino-7-naphthol, may be used. Specification 21,932/13 is referred to.
GB191403796D 1913-03-11 1914-02-13 Process for Producing Azodyestuffs. Expired GB191403796A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE191403796X 1913-03-11

Publications (1)

Publication Number Publication Date
GB191403796A true GB191403796A (en) 1914-06-25

Family

ID=32337750

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191403796D Expired GB191403796A (en) 1913-03-11 1914-02-13 Process for Producing Azodyestuffs.

Country Status (1)

Country Link
GB (1) GB191403796A (en)

Similar Documents

Publication Publication Date Title
US2384419A (en) Azo dyestuffs
GB191403796A (en) Process for Producing Azodyestuffs.
US2659721A (en) Trisazo dyestuffs
US1901387A (en) Azodyestuffs
US2095484A (en) Azodyestuffs
US1857244A (en) New monoazodyestuffs
GB190907821A (en) Manufacture and Production of New Azodyestuffs.
US902186A (en) Azo dye.
US792032A (en) Blue-black azo dye.
US1647145A (en) Boika
GB191329567A (en) Manufacture and Production of New Colouring Matters for Wool.
US1052137A (en) Disazo dye.
US797731A (en) Black azo dye.
US512493A (en) vormals fr
GB191310168A (en) Process for the Production of Monoazo-dyestuffs.
US1282354A (en) Substantive orthooxyazo dyestuffs and process of making same.
GB191214555A (en) Manufacture and Production of New Azodyes.
US737445A (en) Reddish-brown azo dye.
US792033A (en) Black azo dye.
US1027148A (en) Red azo dye.
US1871991A (en) New azo dyestuffs
US1114844A (en) Azo dyes.
GB191321932A (en) Manufacture and Production of New Azodyestuffs.
GB190924487A (en) Manufacture and Production of New Acid Wool Dyestuffs.
US807119A (en) Red azo dye and process of making same.