GB585654A - New azo dyestuff - Google Patents

New azo dyestuff

Info

Publication number
GB585654A
GB585654A GB2055645A GB2055645A GB585654A GB 585654 A GB585654 A GB 585654A GB 2055645 A GB2055645 A GB 2055645A GB 2055645 A GB2055645 A GB 2055645A GB 585654 A GB585654 A GB 585654A
Authority
GB
United Kingdom
Prior art keywords
dyestuff
drummed
aqueous solution
coupling
acid
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
GB2055645A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB2055645A priority Critical patent/GB585654A/en
Publication of GB585654A publication Critical patent/GB585654A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/38—Trisazo dyes ot the type
    • C09B35/40—Trisazo dyes ot the type the component K being a dihydroxy or polyhydroxy compound

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Abstract

A trisazo dyestuff is manufactured by coupling the diazoazo compound from one molecular proportion of tetrazotized benzidine and one of salicylic acid with the monoazo compound obtained by coupling diazotized aniline-2 : 5-disulphonic acid with resorcinol. The product dyes leather in orange-brown shades; e.g. full chrome calf skins in the blue are drummed with an aqueous solution of sodium bicarbonate to produce a surface pH of 6-6.5, washed, drummed with an aqueous solution of the dyestuff with the addition of formic acid in the course of the dyeing, and then fat liquored, struck out and dried.
GB2055645A 1945-08-10 1945-08-10 New azo dyestuff Expired GB585654A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2055645A GB585654A (en) 1945-08-10 1945-08-10 New azo dyestuff

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2055645A GB585654A (en) 1945-08-10 1945-08-10 New azo dyestuff

Publications (1)

Publication Number Publication Date
GB585654A true GB585654A (en) 1947-02-14

Family

ID=10147843

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2055645A Expired GB585654A (en) 1945-08-10 1945-08-10 New azo dyestuff

Country Status (1)

Country Link
GB (1) GB585654A (en)

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