GB262243A - Azo dyestuffs - Google Patents

Azo dyestuffs

Info

Publication number
GB262243A
GB262243A GB2863925A GB2863925A GB262243A GB 262243 A GB262243 A GB 262243A GB 2863925 A GB2863925 A GB 2863925A GB 2863925 A GB2863925 A GB 2863925A GB 262243 A GB262243 A GB 262243A
Authority
GB
United Kingdom
Prior art keywords
acid
coupled
diamine
nitraniline
azo dyes
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
GB2863925A
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
British Dyestuffs Corp 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 British Dyestuffs Corp Ltd filed Critical British Dyestuffs Corp Ltd
Priority to GB2863925A priority Critical patent/GB262243A/en
Publication of GB262243A publication Critical patent/GB262243A/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
    • C09B35/08—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl
    • 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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
    • C09B29/08—Amino benzenes
    • 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
    • C09B45/00—Complex metal compounds of azo dyes
    • C09B45/38—Preparation from compounds with —OH and —COOH adjacent in the same ring or in peri position

Landscapes

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

Abstract

262,243. British Dyestuffs Corporation, Ltd., Mendoza, M., and Saunders, K. H. Nov. 13, 1925. Azo dyes.-The m-diamines obtained by reducing the dinitrosulphones resulting from the condensation of the sulphinic acids derived from ooxyarylcarboxylic acids with aromatic dinitro compounds containing a labile halogen atom, as described in Specification 245,865, are used as end components in the manufacture of azo dyes. The 2 : 4-diamino-4<1>-oxydiphenylsulphone-3<1>- carboxylic acid, and its 5<1>-methyl and 5<1>-chlor derivatives are specified. The products dye wool from an acid bath in various shades of orange and brown, which become fast to milling when after-chromed; when chrome-printed on cotton they yield similar shades fast to warm soap. In examples (1) the first-mentioned diamine is coupled with diazotized sulphanilic acid; metanilic acid, naphthionic acid and p-nitraniline-osulphonic acid may also be used, (2) the monoazo dyestuff from p-nitraniline-o-sulphonic acid and the first-mentioned diamine is reduced, rediazotized and coupled with a second molecule of the same diamine, and (3) tetrazotized benzidinem-disulphonic acid is coupled with two molecules of the same diamine.
GB2863925A 1925-11-13 1925-11-13 Azo dyestuffs Expired GB262243A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2863925A GB262243A (en) 1925-11-13 1925-11-13 Azo dyestuffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2863925A GB262243A (en) 1925-11-13 1925-11-13 Azo dyestuffs

Publications (1)

Publication Number Publication Date
GB262243A true GB262243A (en) 1926-12-09

Family

ID=10278769

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2863925A Expired GB262243A (en) 1925-11-13 1925-11-13 Azo dyestuffs

Country Status (1)

Country Link
GB (1) GB262243A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432403A (en) * 1944-02-02 1947-12-09 Chem Ind Basel Monoazo dyes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432403A (en) * 1944-02-02 1947-12-09 Chem Ind Basel Monoazo dyes

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