GB487723A - The manufacture of new vat dyestuffs of the dipyrazole-anthronyl series - Google Patents

The manufacture of new vat dyestuffs of the dipyrazole-anthronyl series

Info

Publication number
GB487723A
GB487723A GB15767/37A GB1576737A GB487723A GB 487723 A GB487723 A GB 487723A GB 15767/37 A GB15767/37 A GB 15767/37A GB 1576737 A GB1576737 A GB 1576737A GB 487723 A GB487723 A GB 487723A
Authority
GB
United Kingdom
Prior art keywords
ester
acid
sulphonic acid
anthronyl
dipyrazole
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
GB15767/37A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Publication of GB487723A publication Critical patent/GB487723A/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
    • C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
    • C09B5/02—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic ring being only condensed in peri position
    • C09B5/04—Pyrazolanthrones
    • C09B5/08—Dipyrazolanthrones

Landscapes

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

Abstract

Dyes of the dipyrazoleanthronyl series are obtained by acting on an alkali salt of 2.21-dipyrazole-anthronyl with the cyclohexyl ester of an arylsulphonic acid or with a cyclohexyl ester of an arylsulphonic acid alkylated in the cyclohexyl radicle, isolating the intermediate product and transforming it into its alkali salt, and acting thereon with an alkylester of an arylsulphonic acid. An example describes reacting the potassium salt of 2.21-dipyrazoleanthronyl with the cyclohexylester of benzene sulphonic acid in o-dichlorbenzene in presence of potassium carbonate, treating the product with caustic potash, followed by the ethyl ester of p-toluene-sulphonic acid in o-dichlorbenzene, to give a product dyeing cotton red shades from a blue vat. The benzene sulphonic acid ester of cyclohexanol may be replaced by that of 1,2-methyl-cyclohexanol or a corresponding isomeric or homologous alkyl compound, and the benzene sulphonic acid ethyl ester may be replaced by the methyl or propyl ester.
GB15767/37A 1936-06-09 1937-06-07 The manufacture of new vat dyestuffs of the dipyrazole-anthronyl series Expired GB487723A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE487723X 1936-06-09

Publications (1)

Publication Number Publication Date
GB487723A true GB487723A (en) 1938-06-24

Family

ID=6543677

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15767/37A Expired GB487723A (en) 1936-06-09 1937-06-07 The manufacture of new vat dyestuffs of the dipyrazole-anthronyl series

Country Status (1)

Country Link
GB (1) GB487723A (en)

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