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FR796789A - Process for preparing heptacarbocyanines and their application as photographic sensitizers - Google Patents

Process for preparing heptacarbocyanines and their application as photographic sensitizers

Info

Publication number
FR796789A
FR796789A FR796789DA FR796789A FR 796789 A FR796789 A FR 796789A FR 796789D A FR796789D A FR 796789DA FR 796789 A FR796789 A FR 796789A
Authority
FR
France
Prior art keywords
heptacarbocyanines
preparing
application
photographic sensitizers
sensitizers
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
Other languages
French (fr)
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
Application granted granted Critical
Publication of FR796789A publication Critical patent/FR796789A/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
    • C09B23/02—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups
    • C09B23/08—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups more than three >CH- groups, e.g. polycarbocyanines
    • C09B23/086—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups more than three >CH- groups, e.g. polycarbocyanines more than five >CH- groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pyridine Compounds (AREA)
FR796789D 1934-10-27 1935-10-26 Process for preparing heptacarbocyanines and their application as photographic sensitizers Expired FR796789A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT469604X 1934-10-27

Publications (1)

Publication Number Publication Date
FR796789A true FR796789A (en) 1936-04-15

Family

ID=3674726

Family Applications (1)

Application Number Title Priority Date Filing Date
FR796789D Expired FR796789A (en) 1934-10-27 1935-10-26 Process for preparing heptacarbocyanines and their application as photographic sensitizers

Country Status (3)

Country Link
BE (1) BE411947A (en)
FR (1) FR796789A (en)
GB (1) GB469604A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2984664A (en) * 1958-05-14 1961-05-16 Ilford Ltd Process for preparation of pentamethincyanines
EP0315901A2 (en) * 1987-11-11 1989-05-17 Bayer Ag Tetraindolyl-heptamethine ethers, alcohols and dyestuffs

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2984664A (en) * 1958-05-14 1961-05-16 Ilford Ltd Process for preparation of pentamethincyanines
EP0315901A2 (en) * 1987-11-11 1989-05-17 Bayer Ag Tetraindolyl-heptamethine ethers, alcohols and dyestuffs
EP0315901A3 (en) * 1987-11-11 1991-08-28 Bayer Ag Tetraindolyl-heptamethine ethers, alcohols and dyestuffs

Also Published As

Publication number Publication date
BE411947A (en)
GB469604A (en) 1937-07-28

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