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GB1202799A - A disazo dye and its production - Google Patents

A disazo dye and its production

Info

Publication number
GB1202799A
GB1202799A GB4706669A GB4706669A GB1202799A GB 1202799 A GB1202799 A GB 1202799A GB 4706669 A GB4706669 A GB 4706669A GB 4706669 A GB4706669 A GB 4706669A GB 1202799 A GB1202799 A GB 1202799A
Authority
GB
United Kingdom
Prior art keywords
sulphonic acid
diazotized
coupling
disazo dye
production
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
GB4706669A
Inventor
Alfred Frei
Georg Schofberger
August Schweizer
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.)
Sandoz AG
Original Assignee
Sandoz 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 Sandoz AG filed Critical Sandoz AG
Priority to GB4706669A priority Critical patent/GB1202799A/en
Publication of GB1202799A publication Critical patent/GB1202799A/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
    • C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
    • C09B33/02—Disazo dyes
    • C09B33/08—Disazo dyes in which the coupling component is a hydroxy-amino compound
    • C09B33/10—Disazo dyes in which the coupling component is a hydroxy-amino compound in which the coupling component is an amino naphthol
    • 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
    • C09B43/00—Preparation of azo dyes from other azo compounds
    • C09B43/12—Preparation of azo dyes from other azo compounds by acylation of amino groups
    • C09B43/136—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents
    • C09B43/14—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents with phosgene or thiophosgene

Landscapes

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

Abstract

1,202,799. Disazo dye. SANDOZ Ltd. 24 Sept., 1969 [25 June, 1968], No. 47066/69. Divided out of 1,202,798. Heading C4P. The dye of Formula I is prepared by coupling two moles of diazotized 2-naphthylamine-6-sulphonic acid with 1 mole of 5,5<SP>1</SP>-dihydroxy-7,7<SP>1</SP>-disulpho-2,2<SP>1</SP>-dinaphthyl urea, or by coupling diazotized 2-naphthylamino-6-sulphonic acid with 2-amino-5-hydroxy napthalene-7-sulphonic acid and reacting 2 moles of the resultant compound with phosgene, or by coupling diazotized 2-naphthylamine-6-sulphonic acid with a 2-acylamino-5- hydroxynaphthalene-7-sulphonic acid, saponifying the acylamino group and reacting the resultant compound with phosgene.
GB4706669A 1968-06-25 1968-06-25 A disazo dye and its production Expired GB1202799A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4706669A GB1202799A (en) 1968-06-25 1968-06-25 A disazo dye and its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4706669A GB1202799A (en) 1968-06-25 1968-06-25 A disazo dye and its production

Publications (1)

Publication Number Publication Date
GB1202799A true GB1202799A (en) 1970-08-19

Family

ID=10443586

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4706669A Expired GB1202799A (en) 1968-06-25 1968-06-25 A disazo dye and its production

Country Status (1)

Country Link
GB (1) GB1202799A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077767A (en) 1974-10-16 1978-03-07 Bayer Aktiengesellschaft Process for the preparation of concentrated solutions of urea compounds
CN102936422A (en) * 2012-08-03 2013-02-20 上海色如丹染料化工有限公司 Production method for synthesizing red direct dye through non-phosgene method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077767A (en) 1974-10-16 1978-03-07 Bayer Aktiengesellschaft Process for the preparation of concentrated solutions of urea compounds
CN102936422A (en) * 2012-08-03 2013-02-20 上海色如丹染料化工有限公司 Production method for synthesizing red direct dye through non-phosgene method

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee