GB504821A - Improvements in and relating to cyanine dyes and sensitization of photographic emulsions - Google Patents

Improvements in and relating to cyanine dyes and sensitization of photographic emulsions

Info

Publication number
GB504821A
GB504821A GB2348837A GB2348837A GB504821A GB 504821 A GB504821 A GB 504821A GB 2348837 A GB2348837 A GB 2348837A GB 2348837 A GB2348837 A GB 2348837A GB 504821 A GB504821 A GB 504821A
Authority
GB
United Kingdom
Prior art keywords
cyanine dyes
sensitization
relating
photographic emulsions
emulsions
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
GB2348837A
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.)
Kodak Ltd
Original Assignee
Kodak Ltd
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 Kodak Ltd filed Critical Kodak Ltd
Priority to GB2348837A priority Critical patent/GB504821A/en
Priority to FR847801D priority patent/FR847801A/en
Priority to DE1938749494D priority patent/DE749494C/en
Publication of GB504821A publication Critical patent/GB504821A/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
    • C09B23/04—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups one >CH- group, e.g. cyanines, isocyanines, pseudocyanines

Landscapes

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

Abstract

504,821. Sensitizing photographic emulsions. KODAK, Ltd., and HAMER, F. M. Aug. 27, 1937, No. 23488. [Class 98 (ii)] [Also in Group IV] Photographic silver salt. emulsions are sensitized in the blue and green regions of the spectrum by means of a quaternary salt especially an alkyl chloride, of an oxazolo- or thiazolocyanine dye or a 3 : 4 : 3<1> : 4<1>- dibenzthiacyanine dye. The simple thiazolocyanine dyes are supersensitizers for other cyanine dyes.
GB2348837A 1937-08-27 1937-08-27 Improvements in and relating to cyanine dyes and sensitization of photographic emulsions Expired GB504821A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2348837A GB504821A (en) 1937-08-27 1937-08-27 Improvements in and relating to cyanine dyes and sensitization of photographic emulsions
FR847801D FR847801A (en) 1937-08-27 1938-08-27 Improvements to cyanine-type dyes and to sensitization of photographic emulsions
DE1938749494D DE749494C (en) 1937-08-27 1938-08-28 Process for the preparation of thiocyanine dyes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2348837A GB504821A (en) 1937-08-27 1937-08-27 Improvements in and relating to cyanine dyes and sensitization of photographic emulsions

Publications (1)

Publication Number Publication Date
GB504821A true GB504821A (en) 1939-04-27

Family

ID=10196416

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2348837A Expired GB504821A (en) 1937-08-27 1937-08-27 Improvements in and relating to cyanine dyes and sensitization of photographic emulsions

Country Status (3)

Country Link
DE (1) DE749494C (en)
FR (1) FR847801A (en)
GB (1) GB504821A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1062370B (en) * 1956-04-21 1959-07-30 Gevaert Photo Prod Nv Process for the preparation of symmetrical monomethine cyanine dyes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5512428A (en) * 1993-10-13 1996-04-30 Agfa-Gevaert Ag Photographic recording materials

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE386128A (en) * 1931-02-03
BE391057A (en) * 1931-09-19
GB419361A (en) * 1933-05-02 1934-11-02 Kodak Ltd Improvements in and relating to the manufacture of cyanine dyes and their use in photography
GB431141A (en) * 1933-12-23 1935-06-24 John David Kendall Improvements in or relating to the production of compounds containing a methine or apolymethine chain

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1062370B (en) * 1956-04-21 1959-07-30 Gevaert Photo Prod Nv Process for the preparation of symmetrical monomethine cyanine dyes

Also Published As

Publication number Publication date
FR847801A (en) 1939-10-17
DE749494C (en) 1945-01-19

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