GB646123A - Process for the manufacture of polymethine dyestuffs - Google Patents

Process for the manufacture of polymethine dyestuffs

Info

Publication number
GB646123A
GB646123A GB11280/46A GB1128046A GB646123A GB 646123 A GB646123 A GB 646123A GB 11280/46 A GB11280/46 A GB 11280/46A GB 1128046 A GB1128046 A GB 1128046A GB 646123 A GB646123 A GB 646123A
Authority
GB
United Kingdom
Prior art keywords
pyrazolone
methyl
phenyl
heating
acid
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
GB11280/46A
Other languages
English (en)
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.)
Gevaert Photo Producten NV
Original Assignee
Gevaert Photo Producten NV
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 Gevaert Photo Producten NV filed Critical Gevaert Photo Producten NV
Publication of GB646123A publication Critical patent/GB646123A/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
    • C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
    • C09B23/0066—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain being part of a carbocyclic ring,(e.g. benzene, naphtalene, cyclohexene, cyclobutenene-quadratic acid)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
GB11280/46A 1941-05-22 1946-04-12 Process for the manufacture of polymethine dyestuffs Expired GB646123A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE646123X 1941-05-22

Publications (1)

Publication Number Publication Date
GB646123A true GB646123A (en) 1950-11-15

Family

ID=6580822

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11280/46A Expired GB646123A (en) 1941-05-22 1946-04-12 Process for the manufacture of polymethine dyestuffs

Country Status (4)

Country Link
BE (1) BE445645A (enExample)
ES (1) ES157456A1 (enExample)
FR (1) FR882213A (enExample)
GB (1) GB646123A (enExample)

Also Published As

Publication number Publication date
BE445645A (enExample)
FR882213A (fr) 1943-05-21
ES157456A1 (es) 1943-03-01

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