GB428697A - Improvements in or relating to the production of azo dyestuffs - Google Patents

Improvements in or relating to the production of azo dyestuffs

Info

Publication number
GB428697A
GB428697A GB3207833A GB3207833A GB428697A GB 428697 A GB428697 A GB 428697A GB 3207833 A GB3207833 A GB 3207833A GB 3207833 A GB3207833 A GB 3207833A GB 428697 A GB428697 A GB 428697A
Authority
GB
United Kingdom
Prior art keywords
nitroaniline
relating
production
diazotized
azo dyestuffs
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
GB3207833A
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.)
HAROLD EDWARD WOODWARD
EIDP Inc
Original Assignee
HAROLD EDWARD WOODWARD
EI Du Pont de Nemours and Co
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 HAROLD EDWARD WOODWARD, EI Du Pont de Nemours and Co filed Critical HAROLD EDWARD WOODWARD
Priority to GB3207833A priority Critical patent/GB428697A/en
Publication of GB428697A publication Critical patent/GB428697A/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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/32—Monoazo dyes prepared by diazotising and coupling from coupling components containing a reactive methylene group

Landscapes

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

Abstract

Azo dyes are made by coupling a diazotized nitroaniline, carrying as substituents halogen or alkoxy groups, but no sulphonic or carboxylic acid groups, with an acetoacetic-2 : 5-dialkoxyanilide. They are useful as pigments in printing inks and paints (reddish-yellow to orange shades). In examples, diazotized 4-chloro-2-nitroaniline, 3-nitro-4-aminoanisole or 2-chlor-4-nitroaniline is coupled with acetoacetic acid-2 : 5-dimethoxyanilide.
GB3207833A 1933-11-17 1933-11-17 Improvements in or relating to the production of azo dyestuffs Expired GB428697A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3207833A GB428697A (en) 1933-11-17 1933-11-17 Improvements in or relating to the production of azo dyestuffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3207833A GB428697A (en) 1933-11-17 1933-11-17 Improvements in or relating to the production of azo dyestuffs

Publications (1)

Publication Number Publication Date
GB428697A true GB428697A (en) 1935-05-17

Family

ID=10332854

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3207833A Expired GB428697A (en) 1933-11-17 1933-11-17 Improvements in or relating to the production of azo dyestuffs

Country Status (1)

Country Link
GB (1) GB428697A (en)

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