ES397305A1 - Water-soluble disazo dy'estuff and process for preparing it - Google Patents

Water-soluble disazo dy'estuff and process for preparing it

Info

Publication number
ES397305A1
ES397305A1 ES397305A ES397305A ES397305A1 ES 397305 A1 ES397305 A1 ES 397305A1 ES 397305 A ES397305 A ES 397305A ES 397305 A ES397305 A ES 397305A ES 397305 A1 ES397305 A1 ES 397305A1
Authority
ES
Spain
Prior art keywords
water
soluble disazo
estuff
preparing
dye
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
ES397305A
Other languages
Spanish (es)
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of ES397305A1 publication Critical patent/ES397305A1/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
    • C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
    • C09B31/02—Disazo dyes
    • C09B31/08—Disazo dyes from a coupling component "C" containing directive hydroxyl and amino groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Procedure for the preparation of a water-soluble disazo dye, of the formula: **(See formula)** characterized in that sulphanilic acid is indirectly diazotized and coupled in the alkaline margin with meta-toluidine, the resulting suspension of the aminomonoazoic dye is mixed with sodium nitrite solution, the mixture is incorporated dropwise under cooling in dilute hydrochloric acid, and The diazo suspension obtained is combined at pH 7-8 with a weakly alkaline aqueous solution of 2-amino-5-naphthol-7-sulfonic acid. (Machine-translation by Google Translate, not legally binding)
ES397305A 1970-11-30 1971-11-24 Water-soluble disazo dy'estuff and process for preparing it Expired ES397305A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702058816 DE2058816C3 (en) 1970-11-30 1970-11-30 Water-soluble disazo dye, process for its preparation and its use for dyeing leather and fur

Publications (1)

Publication Number Publication Date
ES397305A1 true ES397305A1 (en) 1975-03-01

Family

ID=5789495

Family Applications (1)

Application Number Title Priority Date Filing Date
ES397305A Expired ES397305A1 (en) 1970-11-30 1971-11-24 Water-soluble disazo dy'estuff and process for preparing it

Country Status (8)

Country Link
BE (1) BE776081A (en)
CH (1) CH556371A (en)
DE (1) DE2058816C3 (en)
ES (1) ES397305A1 (en)
FR (1) FR2115491B1 (en)
GB (1) GB1349098A (en)
IT (1) IT946115B (en)
NL (1) NL7116216A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2144951A1 (en) * 1997-05-27 2000-06-16 Everlight Usa Inc Red dyestuffs

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2453209C2 (en) * 1974-11-09 1983-02-03 Bayer Ag, 5090 Leverkusen Disazo dyes, process for their preparation and their use
CH601437A5 (en) * 1975-04-24 1978-07-14 Sandoz Ag

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2144951A1 (en) * 1997-05-27 2000-06-16 Everlight Usa Inc Red dyestuffs

Also Published As

Publication number Publication date
DE2058816B2 (en) 1974-06-06
CH556371A (en) 1974-11-29
BE776081A (en) 1972-05-30
DE2058816C3 (en) 1975-02-06
GB1349098A (en) 1974-03-27
NL7116216A (en) 1972-06-01
IT946115B (en) 1973-05-21
DE2058816A1 (en) 1972-07-06
FR2115491B1 (en) 1976-03-26
FR2115491A1 (en) 1972-07-07

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