GB345130A - The manufacture of indigoid vat dyestuffs - Google Patents

The manufacture of indigoid vat dyestuffs

Info

Publication number
GB345130A
GB345130A GB12110/30A GB1211030A GB345130A GB 345130 A GB345130 A GB 345130A GB 12110/30 A GB12110/30 A GB 12110/30A GB 1211030 A GB1211030 A GB 1211030A GB 345130 A GB345130 A GB 345130A
Authority
GB
United Kingdom
Prior art keywords
methyl
hydroxythionaphthene
manufacture
bromisatin
chlor
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
GB12110/30A
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 GB345130A publication Critical patent/GB345130A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B7/00Indigoid dyes
    • C09B7/06Indone-thionapthene indigos

Landscapes

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

Abstract

Indigoid dyestuffs are obtained by condensing 6-methyl-3-hydroxythionaphthene with an a -derivative of a 5-chlor- or 5-bromisatin. In examples, 6-methyl-3-hydroxythionaphthene is condensed with the a -chlorides of 5-chlor- and of 5-bromisatin, the chlorides being obtained by treating the chlorbenzene solution of the isatin with phosphorus pentachloride. The products dye animal and vegetable fibres grey shades and are suitable for printing. 6-Methyl-3-hydroxythionaphthene is obtained by condensing 1-methyl-4-amino-5-mercaptobenzene (prepared by subjecting dehydrothiotoluidine to alkali fusion) with monochloracetic acid, and converting the resulting 1-methyl-4-aminobenzene-5-thioglycollic acid into the hydroxythionaphthene by known methods.
GB12110/30A 1929-04-22 1930-04-16 The manufacture of indigoid vat dyestuffs Expired GB345130A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE345130X 1929-04-22

Publications (1)

Publication Number Publication Date
GB345130A true GB345130A (en) 1931-03-19

Family

ID=6254408

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12110/30A Expired GB345130A (en) 1929-04-22 1930-04-16 The manufacture of indigoid vat dyestuffs

Country Status (1)

Country Link
GB (1) GB345130A (en)

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