GB1516223A - Process for preparing laked azo dyestuffs - Google Patents

Process for preparing laked azo dyestuffs

Info

Publication number
GB1516223A
GB1516223A GB376076A GB376076A GB1516223A GB 1516223 A GB1516223 A GB 1516223A GB 376076 A GB376076 A GB 376076A GB 376076 A GB376076 A GB 376076A GB 1516223 A GB1516223 A GB 1516223A
Authority
GB
United Kingdom
Prior art keywords
nitrite
laked
acid group
free acid
laked 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
GB376076A
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
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 filed Critical Hoechst AG
Publication of GB1516223A publication Critical patent/GB1516223A/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
    • C09B31/025—Disazo dyes containing acid groups, e.g. -COOH, -SO3H, -PO3H2, -OSO3H, -OPO2H2; Salts thereof
    • 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
    • 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
    • C09B63/00—Lakes
    • C09B63/005—Metal lakes of dyes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Coloring (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1516223 Laked azo dyestuffs HOECHST AG 30 Jan 1976 [30 Jan 1975] 03760/76 Heading C4P A laked azo compound is prepared by reacting a diazotizable amine (aromatic or heteroaromatic) with the stoichiometric amount of a nitrite and of a coupling component at - 10‹ to + 80‹C in water in the absence of added acid, at least one of the reaction components containing at least one free acid group capable of lake formation and subsequently laking any free acid group remaining in the product. As long as there is at least one free acid group, other acid groups may be laked before or during the coupling. The nitrite may be an alkali metal nitrite or the nitrite of a metal which is capable of forming lakes e.g. Ba, Mn, Ca or Sr. A buffer substance may be present in the coupling mixture, or a base to adjust the pH to a suitable value. A minor proportion of a water-miscible organic solvent may also be present, and a surface active agent may be added. The laked azo compound may be used to colour a plastic material e.g. PVC or a printing paste for use in graphic printing.
GB376076A 1975-01-30 1976-01-30 Process for preparing laked azo dyestuffs Expired GB1516223A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752503791 DE2503791C2 (en) 1975-01-30 1975-01-30 METHOD FOR MANUFACTURING LACQUERED AZO DYES

Publications (1)

Publication Number Publication Date
GB1516223A true GB1516223A (en) 1978-06-28

Family

ID=5937684

Family Applications (1)

Application Number Title Priority Date Filing Date
GB376076A Expired GB1516223A (en) 1975-01-30 1976-01-30 Process for preparing laked azo dyestuffs

Country Status (12)

Country Link
JP (1) JPS51101028A (en)
AR (1) AR208352A1 (en)
AU (1) AU1064376A (en)
BE (1) BE838097A (en)
BR (1) BR7600564A (en)
DE (1) DE2503791C2 (en)
DK (1) DK38076A (en)
FR (1) FR2299387A1 (en)
GB (1) GB1516223A (en)
IN (1) IN143077B (en)
IT (1) IT1054549B (en)
NL (1) NL7600715A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4248635A (en) 1978-08-03 1981-02-03 Basf Aktiengesellschaft High-hiding calcium color lakes having great full-shade brillance and improved lightfastness
US5669967A (en) * 1996-05-30 1997-09-23 Engelhard Corporation Pigment compositions
US6294012B1 (en) 1999-11-15 2001-09-25 Engelhard Corporation High strength monoazo yellow pigment
US6375733B1 (en) 2000-08-28 2002-04-23 Engelhard Corporation Heat stable monoazo magenta pigment compositions
WO2006059741A1 (en) * 2004-12-03 2006-06-08 Canon Kabushiki Kaisha Preparation process of azo pigment dispersion
CN102585546A (en) * 2011-12-30 2012-07-18 山东宇虹颜料有限公司 Preparation method for C.I. pigment red 53:1

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59191762A (en) * 1983-04-15 1984-10-30 Toyo Ink Mfg Co Ltd Production of azo pigment
DE3318073A1 (en) * 1983-05-18 1984-11-22 Basf Ag, 6700 Ludwigshafen PYRAZOLONAZO DYES
DE3543512A1 (en) * 1985-12-10 1987-06-11 Bayer Ag AZO COLOR LACQUER
US5746821A (en) * 1995-02-13 1998-05-05 Engelhard Corporation Pigment compositions
US6001167A (en) * 1996-08-06 1999-12-14 Engelhard Corporation Pigment compositions
US5997628A (en) * 1998-06-08 1999-12-07 Engelhard Corporation Heat stable laked monoazo pigment compositions

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4248635A (en) 1978-08-03 1981-02-03 Basf Aktiengesellschaft High-hiding calcium color lakes having great full-shade brillance and improved lightfastness
US5669967A (en) * 1996-05-30 1997-09-23 Engelhard Corporation Pigment compositions
US6294012B1 (en) 1999-11-15 2001-09-25 Engelhard Corporation High strength monoazo yellow pigment
US6375733B1 (en) 2000-08-28 2002-04-23 Engelhard Corporation Heat stable monoazo magenta pigment compositions
WO2006059741A1 (en) * 2004-12-03 2006-06-08 Canon Kabushiki Kaisha Preparation process of azo pigment dispersion
CN102585546A (en) * 2011-12-30 2012-07-18 山东宇虹颜料有限公司 Preparation method for C.I. pigment red 53:1

Also Published As

Publication number Publication date
AR208352A1 (en) 1976-12-20
IN143077B (en) 1977-09-24
BR7600564A (en) 1976-08-31
NL7600715A (en) 1976-08-03
DE2503791B1 (en) 1976-07-29
JPS51101028A (en) 1976-09-07
FR2299387A1 (en) 1976-08-27
IT1054549B (en) 1981-11-30
DK38076A (en) 1976-07-31
DE2503791C2 (en) 1977-03-10
AU1064376A (en) 1977-08-04
BE838097A (en) 1976-07-30

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed