GB149354A - Improvements in or relating to azo dyes and their process of manufacture - Google Patents

Improvements in or relating to azo dyes and their process of manufacture

Info

Publication number
GB149354A
GB149354A GB22016/20A GB2201620A GB149354A GB 149354 A GB149354 A GB 149354A GB 22016/20 A GB22016/20 A GB 22016/20A GB 2201620 A GB2201620 A GB 2201620A GB 149354 A GB149354 A GB 149354A
Authority
GB
United Kingdom
Prior art keywords
salt
acid
diazotized
aminoretene
andersen
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
GB22016/20A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB149354A publication Critical patent/GB149354A/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

Landscapes

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

Abstract

Azo dyes are obtained by coupling diazotized aminoretene or aminoretenequinone or aminoretene sulphonic acid with azo dye components. According to examples:-retene is nitrated by means of fuming nitric acid, the nitroretene is dissolved in alcoholic caustic soda and reduced with hydrosulphite, and the aminoretene is diazotized and coupled with R- salt, G- salt, Andersen's salt (sodium salt of 1-oxynaphthalene-3 : 8-disulphonic acid), H- acid, or a -naphthol; retenequinone is nitrated with fuming nitric acid, the nitroretenequinone is reduced as described above, the amino compound is diazotized and coupled with R- salt, G- salt, Andersen's salt, H- acid, b -naphthol, or a -naphthylamine; retene is sulphonated by fuming sulphuric acid, the product nitrated by concentrated nitric acid, reduced by means of iron powder, and diazotized and coupled with R- salt, G- salt, Andersen's salt, or H- acid.
GB22016/20A 1917-05-07 1920-07-22 Improvements in or relating to azo dyes and their process of manufacture Expired GB149354A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH149354X 1917-05-07

Publications (1)

Publication Number Publication Date
GB149354A true GB149354A (en) 1921-10-24

Family

ID=4404988

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22016/20A Expired GB149354A (en) 1917-05-07 1920-07-22 Improvements in or relating to azo dyes and their process of manufacture

Country Status (1)

Country Link
GB (1) GB149354A (en)

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