GB684650A - Improvements in or relating to polymethine dyes - Google Patents

Improvements in or relating to polymethine dyes

Info

Publication number
GB684650A
GB684650A GB5257/51A GB525751A GB684650A GB 684650 A GB684650 A GB 684650A GB 5257/51 A GB5257/51 A GB 5257/51A GB 525751 A GB525751 A GB 525751A GB 684650 A GB684650 A GB 684650A
Authority
GB
United Kingdom
Prior art keywords
methyl
ethyl
iodide
dihydrobenzthiazolylidene
perchlorate
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
GB5257/51A
Other languages
English (en)
Inventor
John David Kendall
Douglas James Fry
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.)
Ilford Imaging UK Ltd
Original Assignee
Ilford 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
Priority to NL7504575.A priority Critical patent/NL167913B/xx
Priority to NL86429D priority patent/NL86429C/xx
Application filed by Ilford Ltd filed Critical Ilford Ltd
Priority to GB5257/51A priority patent/GB684650A/en
Priority to US273344A priority patent/US2705234A/en
Publication of GB684650A publication Critical patent/GB684650A/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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08—Sensitivity-increasing substances
    • G03C1/10—Organic substances
    • G03C1/12—Methine and polymethine dyes
    • G03C1/14—Methine and polymethine dyes with an odd number of CH groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Thiazole And Isothizaole Compounds (AREA)
GB5257/51A 1951-03-05 1951-03-05 Improvements in or relating to polymethine dyes Expired GB684650A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL7504575.A NL167913B (nl) 1951-03-05 Automatische opblaasinrichting voor een reddingstoe- stel.
NL86429D NL86429C (forum.php) 1951-03-05
GB5257/51A GB684650A (en) 1951-03-05 1951-03-05 Improvements in or relating to polymethine dyes
US273344A US2705234A (en) 1951-03-05 1952-02-25 Polymethine dyes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5257/51A GB684650A (en) 1951-03-05 1951-03-05 Improvements in or relating to polymethine dyes

Publications (1)

Publication Number Publication Date
GB684650A true GB684650A (en) 1952-12-24

Family

ID=9792680

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5257/51A Expired GB684650A (en) 1951-03-05 1951-03-05 Improvements in or relating to polymethine dyes

Country Status (3)

Country Link
US (1) US2705234A (forum.php)
GB (1) GB684650A (forum.php)
NL (2) NL167913B (forum.php)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3482978A (en) * 1966-08-25 1969-12-09 Eastman Kodak Co Carbocyanine filter dyes and sensitizers for silver halide emulsions
US3918978A (en) * 1971-09-30 1975-11-11 Eastman Kodak Co Silver halide emulsions containing 8-substituted carbocyanine dyes

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2353164A (en) * 1944-07-11 Dyestuffs and dyestuff
BE415905A (forum.php) * 1935-06-06
FR810104A (fr) * 1935-08-16 1937-03-15 Ilford Ltd Perfectionnements apportés aux matières tinctoriales
DE873357C (de) * 1937-04-23 1953-04-13 Kodak Ag Verfahren zum Sensibilisieren von Halogensilberemulsionen
US2166736A (en) * 1937-04-23 1939-07-18 Eastman Kodak Co Photographic emulsion
GB534140A (en) * 1939-05-25 1941-02-28 Kodak Ltd Improvements in and relating to photographic emulsions and layers, and the manufacture of dyes for use therein and intermediates for such manufacture
BE442515A (forum.php) * 1940-07-30
US2320654A (en) * 1940-08-08 1943-06-01 Riester Oskar Sensitization of photographic emulsions
NL82952C (forum.php) * 1950-03-14

Also Published As

Publication number Publication date
NL167913B (nl)
US2705234A (en) 1955-03-29
NL86429C (forum.php)

Similar Documents

Publication Publication Date Title
GB684650A (en) Improvements in or relating to polymethine dyes
GB1342258A (en) Heterocyclic compounds and their use
GB1131799A (en) Substituted thiazolidines
GB727151A (en) Improvements in derivatives of pyrimidine and methods of making the same
GB1062950A (en) Trimethine dyes
GB1236112A (en) 5,10-dihydro-11h-dibenzo[b,e][1,4]diazepine-11-ones
GB678626A (en) Improvements in or relating to carbocyanine dyes
GB620482A (en) Trinuclear cyanine dyes and photographic light-sensitive elements containing them
GB681390A (en) Improvements in or relating to dyestuffs and photographic emulsions containing the same
GB684707A (en) Improvements in or relating to the production of dyestuffs and to the sensitising of photographic emulsions therewith
GB1309274A (en) Merocyanin dyes
GB1141487A (en) Derivatives of 2-anilino-1,3-diazacyclopentene-(2)
GB979045A (en) Polymethine dyes, process of making them and photographic elements containing them
GB681738A (en) Improvements in or relating to polymethine compounds and to the sensitising of photographic silver halide emulsions therewith
GB845588A (en) Improvements in or relating to trinuclear cyanine dyes
GB672291A (en) Improvements in or relating to photographic sensitising dyes
GB1074428A (en) Methine dyes
GB714276A (en) Improvements in or relating to methine dyestuffs and the sensitising of photographicemulsions therewith
GB1015400A (en) Cyanine dyes
GB1069243A (en) New tetramethylenepyrrole derivatives and methine dyes made therefrom
GB812924A (en) Improvements in sensitising dyes for photographic silver halide emulsions
GB1310926A (en) Production of dyestuffs
GB633873A (en) Improvements in the manufacture of methin dyes containing an isoquinoline nucleus and in photographic emulsions containing them
FR2234310A1 (en) Azido-tris (dialkylamino) phosphonium salts - as peptide-coupling agents giving high yields
GB1073299A (en) Improvements in or relating to the manufacture of barbituric acid derivatives