GB1417071A - Manufacture of azo compounds - Google Patents

Manufacture of azo compounds

Info

Publication number
GB1417071A
GB1417071A GB3289573A GB3289573A GB1417071A GB 1417071 A GB1417071 A GB 1417071A GB 3289573 A GB3289573 A GB 3289573A GB 3289573 A GB3289573 A GB 3289573A GB 1417071 A GB1417071 A GB 1417071A
Authority
GB
United Kingdom
Prior art keywords
manufacture
azo compounds
july
monoazo dyes
alkyl
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
GB3289573A
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.)
Novartis AG
Original Assignee
Ciba Geigy 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 Ciba Geigy AG filed Critical Ciba Geigy AG
Publication of GB1417071A publication Critical patent/GB1417071A/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
    • C09B41/00—Special methods of performing the coupling reaction
    • C09B41/006—Special methods of performing the coupling reaction characterised by process features
    • C09B41/009—Diazotising and coupling in one step
    • 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
    • C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
    • C09B29/12—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group of the benzene series

Abstract

1417071 Preparation of monoazo dyes CIBA-GEIGY AG 10 July 1973 [11 July 1972] 32895/73 Heading C4P Monoazo dyes of formula wherein R<SP>1</SP> and R<SP>2</SP> are independently alkyl, cycloalkyl, aralkyl or Cl. R<SP>3</SP> is H, Cl, alkyl, alkoxy, alkylsulphonyl, acylamino or SO 3 H and R<SP>4</SP> is H or Cl are prepared by adding an inorganic nitrite to a mixture of a 2-nitroaniline, an inorganic acid and an aqueous dispersion of a 2,4-disubstituted-phenol.
GB3289573A 1972-07-11 1973-07-10 Manufacture of azo compounds Expired GB1417071A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1035872A CH573400A5 (en) 1972-07-11 1972-07-11

Publications (1)

Publication Number Publication Date
GB1417071A true GB1417071A (en) 1975-12-10

Family

ID=4362357

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3289573A Expired GB1417071A (en) 1972-07-11 1973-07-10 Manufacture of azo compounds

Country Status (9)

Country Link
JP (1) JPS4959132A (en)
AT (1) AT325598B (en)
CA (1) CA1007636A (en)
CH (1) CH573400A5 (en)
DE (1) DE2334769A1 (en)
FR (1) FR2192094B1 (en)
GB (1) GB1417071A (en)
IT (1) IT994937B (en)
NL (1) NL7309427A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6339117B2 (en) 1997-07-25 2002-01-15 Bayer Aktiengesellschaft Whitened polymers and the use thereof in coating slips for coating substrates
WO2003048257A1 (en) * 2001-12-05 2003-06-12 Ciba Specialty Chemicals Holding Inc. Organic solvent-free process for the preparation of 2-(2-nitrophenylazo)phenols

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034836B1 (en) * 1979-05-16 1983-07-13 Ciba-Geigy Ag Process for preparing nitroazo benzenes
DE2910199A1 (en) * 1979-03-15 1980-09-25 Hoechst Ag METHOD FOR PRODUCING DIAZONIUM SALT SOLUTIONS
CH661518A5 (en) * 1984-12-20 1987-07-31 Ciba Geigy Ag MONOAZO CONNECTIONS.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6339117B2 (en) 1997-07-25 2002-01-15 Bayer Aktiengesellschaft Whitened polymers and the use thereof in coating slips for coating substrates
WO2003048257A1 (en) * 2001-12-05 2003-06-12 Ciba Specialty Chemicals Holding Inc. Organic solvent-free process for the preparation of 2-(2-nitrophenylazo)phenols
US7074906B2 (en) 2001-12-05 2006-07-11 Ciba Specialty Chemicals Corporation Organic solvent-free process for the preparation of 2-(2-nitrophenylazo)phenols
CN100341859C (en) * 2001-12-05 2007-10-10 西巴特殊化学品控股有限公司 Organic solvent-free process for the preparation of 2-(2-nitrophenylazo)phenols

Also Published As

Publication number Publication date
CA1007636A (en) 1977-03-29
FR2192094A1 (en) 1974-02-08
FR2192094B1 (en) 1976-11-12
DE2334769A1 (en) 1974-01-31
NL7309427A (en) 1974-01-15
JPS4959132A (en) 1974-06-08
CH573400A5 (en) 1976-03-15
IT994937B (en) 1975-10-20
ATA607573A (en) 1975-01-15
AT325598B (en) 1975-10-27

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Legal Events

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