GB210081A - Process for preparing azo-dyestuffs - Google Patents

Process for preparing azo-dyestuffs

Info

Publication number
GB210081A
GB210081A GB1505/24A GB150524A GB210081A GB 210081 A GB210081 A GB 210081A GB 1505/24 A GB1505/24 A GB 1505/24A GB 150524 A GB150524 A GB 150524A GB 210081 A GB210081 A GB 210081A
Authority
GB
United Kingdom
Prior art keywords
acid
diazotized
toluidide
amido
fibre
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
GB1505/24A
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 GB210081A publication Critical patent/GB210081A/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
    • C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
    • C09B29/18—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides
    • C09B29/20—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides of the naphthalene series

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Abstract

Azo dyes are produced in substance, on the fibre, or in the form of lakes, from diazotized alkyl-, aryl-, or aralkyl-amides of an alkyloxy-m-amidobenzoic acid and arylamides of 2 : 3-oxynapthoic acid. The products are red and the process can be used for the production of alizarin pink shades. Examples are given in which diazotized m-amido-p-methoxy-benzoic anilide is coupled with 2 : 3-oxynaphthoic-o-toluidide, and in which the same diazo compound is coupled with the 5-chlor-2-toluidide in presence of barium sulphate. Pink shades are produced on the fibre by impregnating with 2 : 3-oxynaphthoic-o-toluidide, or 4-chlor-2-anisidide, and dyeing or printing with diazotized m-amido-p-methoxybenzoic anilide. Other diazo components, substituted in the acid amide substituent, may be used. Specifications 6379/12 and 17279/13, [Class 15 (ii), Dyeing, Processes &c. for], are referred to. The Specification as open to inspection under Sect. 91 (3) (a) refers also to the use of substituted amides of aryloxy- or aralkyloxy-m-amido-benzoic acids as diazo components; this subject-matter does not appear in the Specification as accepted. Alkyl-, aryl-, or aralkylamides of alkyloxy-m-amidobenzoic acids are obtained by converting a m-nitro-alkyloxybenzoic acid into the acid chloride and condensing with primary or secondary amines.ALSO:Azo dyes are produced on the fibre from diazotized alkyl-, aryl-, or aralkylamides of an alkyloxy-m-amidobenzoic acid and arylamides of 2 : 3-oxynapthoic acid. The products are red and the process can be used for the production of alizarin pink shades. According to examples pink shades are produced on the fibre by impregnating with 2 :3-oxynaphthoic-o-toluidide, or 4-chlor-2-anisidide, and dyeing or printing with diazotized m-amido-p-methoxy-benzoic anilide. Other diazo components, substituted in the acid amide substituent, may be used. Specifications 6379/12 [Class 2 (iii), Dyes &c.], and 17279/13 are referred to. The Specification as open to inspection under Sect. 91 (3) (a) refers also to the use of substituted amides of aryloxy-or aralkyloxy-m-amidobenzoic acids as diazo components. This subject-matter does not appear in the Specification as accepted.
GB1505/24A 1923-01-18 1924-01-18 Process for preparing azo-dyestuffs Expired GB210081A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE210081X 1923-01-18

Publications (1)

Publication Number Publication Date
GB210081A true GB210081A (en) 1925-03-19

Family

ID=5795449

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1505/24A Expired GB210081A (en) 1923-01-18 1924-01-18 Process for preparing azo-dyestuffs

Country Status (1)

Country Link
GB (1) GB210081A (en)

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