GB172057A - Manufacture of easily soluble diazotisable azo-dyestuffs - Google Patents

Manufacture of easily soluble diazotisable azo-dyestuffs

Info

Publication number
GB172057A
GB172057A GB2216320A GB2216320A GB172057A GB 172057 A GB172057 A GB 172057A GB 2216320 A GB2216320 A GB 2216320A GB 2216320 A GB2216320 A GB 2216320A GB 172057 A GB172057 A GB 172057A
Authority
GB
United Kingdom
Prior art keywords
methyl
acid
sulpho
ditolylmethane
tetrazotized
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
GB2216320A
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
Priority to GB2216320A priority Critical patent/GB172057A/en
Publication of GB172057A publication Critical patent/GB172057A/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
    • C09B35/02—Disazo dyes
    • C09B35/039—Disazo dyes characterised by the tetrazo component
    • C09B35/04—Disazo dyes characterised by the tetrazo component the tetrazo component being a benzene derivative

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

The soluble N-methyl-w-sulphonic derivatives of azo dyes, described in the parent Specification, are obtained by coupling diazo compounds with coupling components of the naphthalene series containing external N-methyl-w-sulphonic groups. In examples is described the production of a monoazo dye from diazotized b -naphthylamine and N - methyl - w - sulpho - m-aminobenzoyl-2 : 5 : 7-acid in alkaline solution; a disazo dye from tetrazotized 3 : 31-diamino-4 : 41-ditolylmethane, or 3 : 31-diaminodiphenylmethane, and N-methyl-w-sulpho-m-aminophenyl-5-oxy-1 : 2-naphthiminazole-7-sulphonic acid; a disazo dye from tetrazotized 3 : 31 - diamino - 4 : 41-ditolylmethane and the N-methyl-w-sulpho-p-aminophenylurea of 2 : 5 : 7-acid. When diazotized upon cotton fibre and developed with b -naphthol, fast yellowish-red, bluish-red, &c. shades are obtained. N - Methyl-w-sulpho-m-aminobenzoyl - 2 : 5 : 7-acid is obtained as disodium salt by heating the sodium salt of m-aminobenzoyl-2 : 5 : 7-acid with sodium bisulphite solution and formaldehyde. 3 : 31-diaminodiphenylmethane is obtained by complete reduction in the usual manner of the 3 : 31-dinitrodiphenylmethane.ALSO:The diazotizable azo dyestuffs of the parent Specification are obtained by coupling diazo compounds with coupling components of the naphthalene series containing external N-methyl-co-sulphonic groups. The following dyestuffs are mentioned and may be diazotized on the fibre and developed with b -naphthol:-A monoazo dye from diazotized b -naphthylamine and N-methyl-o -sulpho-m-amidobenzoyl-2 : 5 : 7-acid; a disazo dye from tetrazotized 3 : 31-diamido-4 : 41-ditolylmethane or 3 : 31-diamidodiphenylmethane, and N-methyl-w-sulpho-m-amidophenyl-5-oxy-1 : 2-naphthimidazole-7-sulphonic acid; a disazo dye from tetrazotized 3 : 31-diamido-4 : 41-ditolylmethane and N-methyl-o -sulpho-p-amidophenylurea of 2 : 5 : 7 acid.
GB2216320A 1920-07-24 1920-07-24 Manufacture of easily soluble diazotisable azo-dyestuffs Expired GB172057A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2216320A GB172057A (en) 1920-07-24 1920-07-24 Manufacture of easily soluble diazotisable azo-dyestuffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2216320A GB172057A (en) 1920-07-24 1920-07-24 Manufacture of easily soluble diazotisable azo-dyestuffs

Publications (1)

Publication Number Publication Date
GB172057A true GB172057A (en) 1921-11-24

Family

ID=10174959

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2216320A Expired GB172057A (en) 1920-07-24 1920-07-24 Manufacture of easily soluble diazotisable azo-dyestuffs

Country Status (1)

Country Link
GB (1) GB172057A (en)

Similar Documents

Publication Publication Date Title
GB172057A (en) Manufacture of easily soluble diazotisable azo-dyestuffs
GB267162A (en) Manufacture of dyestuffs
GB286717A (en) Process for the manufacture of substantive azo dyestuffs
GB172056A (en) Manufacture of easily soluble, diazotisable azo-dyestuffs
GB252957A (en) Manufacture of diazotizable azo-dyestuffs and intermediate products therefor
US2239005A (en) Hexakisazo dyestuffs and their manufacture
GB338672A (en) Manufacture of azo-dyestuffs
US2264682A (en) Reddish-violet substantive azo dye
US1034898A (en) Azo dyes and process of making the same.
GB245287A (en) Manufacture of azo-dyestuffs
GB497745A (en) Process for the manufacture of azodyestuffs
GB193385A (en) Manufacture of dyestuffs capable of being chromed
GB281410A (en) Improvements in or relating to dyeing with azo dyes
GB384800A (en) Process for the production of azo dyestuffs
GB200739A (en) Manufacture of mono-azo-dyestuffs
GB396078A (en) Process for the manufacture of azo dyestuffs
GB219299A (en) The manufacture of new azodyestuffs
GB294291A (en) The manufacture of new azo dyestuffs
GB439680A (en) Improvements in the manufacture and production of azo dyestuffs
GB302709A (en) Improvements in the manufacture and production of dyestuffs containing chromium
GB191209574A (en) Mono Azo Dyestuffs and their Production.
GB166033A (en) Manufacture of new azo-dyestuffs for wool
GB623913A (en) Process for the manufacture of new disazo dyestuffs
GB589536A (en) Manufacture of tetrakisazo-dyestuffs capable of being metallised
GB594925A (en) New azo dyestuffs for wool