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GB2028361B - Process for the preparation of azo dyestuffs - Google Patents

Process for the preparation of azo dyestuffs

Info

Publication number
GB2028361B
GB2028361B GB7927029A GB7927029A GB2028361B GB 2028361 B GB2028361 B GB 2028361B GB 7927029 A GB7927029 A GB 7927029A GB 7927029 A GB7927029 A GB 7927029A GB 2028361 B GB2028361 B GB 2028361B
Authority
GB
United Kingdom
Prior art keywords
preparation
azo dyestuffs
dyestuffs
azo
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
GB7927029A
Other versions
GB2028361A (en
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of GB2028361A publication Critical patent/GB2028361A/en
Application granted granted Critical
Publication of GB2028361B publication Critical patent/GB2028361B/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
    • C09B43/00—Preparation of azo dyes from other azo compounds
    • C09B43/40—Preparation of azo dyes from other azo compounds by substituting hetero atoms by radicals containing other hetero atoms
    • C09B43/42—Preparation of azo dyes from other azo compounds by substituting hetero atoms by radicals containing other hetero atoms by substituting radicals containing hetero atoms for —CN radicals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
GB7927029A 1978-08-05 1979-08-02 Process for the preparation of azo dyestuffs Expired GB2028361B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782834386 DE2834386A1 (en) 1978-08-05 1978-08-05 METHOD FOR THE PRODUCTION OF AZO DYES

Publications (2)

Publication Number Publication Date
GB2028361A GB2028361A (en) 1980-03-05
GB2028361B true GB2028361B (en) 1982-10-20

Family

ID=6046312

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7927029A Expired GB2028361B (en) 1978-08-05 1979-08-02 Process for the preparation of azo dyestuffs

Country Status (5)

Country Link
JP (1) JPS5525479A (en)
CH (1) CH643284A5 (en)
DE (1) DE2834386A1 (en)
FR (1) FR2432539A1 (en)
GB (1) GB2028361B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4422854A (en) 1981-06-03 1983-12-27 Hoechst Aktiengesellschaft Transfer printing support, process for the manufacture thereof, with blue azo dye:di-cyano-nitro-phenyl-azo aniline

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4020117A1 (en) * 1990-06-25 1992-01-02 Cassella Ag MONOAZO DYE, ITS PRODUCTION AND USE
US5216140A (en) * 1990-06-25 1993-06-01 Cassella Aktiengesellschaft Monoazo dye and preparation and use thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1290915B (en) * 1966-02-17 1969-03-20 Bayer Ag Process for dyeing and printing fiber materials made from aromatic polyesters and cellulose acetates
FR1524647A (en) * 1966-05-26 1968-05-10 Cassella Farbwerke Mainkur Ag Process for the preparation of azo dyes
DE2456495C3 (en) * 1974-11-29 1978-05-11 Bayer Ag, 5090 Leverkusen Process for the production of practically metal-free azo dyes which have at least one cyano group in the diazo component ortho to the azo bridge
DE2516031A1 (en) * 1975-04-12 1976-10-28 Bayer Ag METHOD OF MANUFACTURING AZO DYES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4422854A (en) 1981-06-03 1983-12-27 Hoechst Aktiengesellschaft Transfer printing support, process for the manufacture thereof, with blue azo dye:di-cyano-nitro-phenyl-azo aniline

Also Published As

Publication number Publication date
GB2028361A (en) 1980-03-05
JPS5525479A (en) 1980-02-23
FR2432539A1 (en) 1980-02-29
DE2834386A1 (en) 1980-02-21
CH643284A5 (en) 1984-05-30

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Legal Events

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

Effective date: 19960802