Patents
Sitemap › 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; Mordants; Lakes › C09B 23 - Methine or polymethine dyes, e.g. cyanine dyes
Patents for C09B 23 - Methine or polymethine dyes, e.g. cyanine dyes (4,654)
01/1983
01/04/1983US4367369 Solar battery
01/04/1983CA1138875A1 Thermolabile cyanine dyes
12/1982
12/28/1982US4366314 Dimethine dyestuffs, their preparation and their use for dyeing synthetic and natural materials
12/28/1982US4366221 Photographic recording material and new merocyanines
12/07/1982US4362800 Cyanine dyes
11/1982
11/17/1982EP0064953A1 Stilbene derivatives
11/17/1982EP0064667A1 Process for the preparation of sulfoalkyl quaternary salts
11/10/1982EP0064303A1 Mixtures of biscyanostyryl benzenes
11/09/1982US4358521 Photoconductive composition with 5-nitrofurfural derivative sensitizer
11/02/1982CA1134835A1 Chromogenic propenylenesulfone compounds
10/1982
10/19/1982CA1133923A1 Basic colorants
10/19/1982CA1133905A1 Thermolabile acutance dyes
09/1982
09/28/1982CA1132556A1 Cationic 1-cyano-p-(n-benzyl-n-ethylamino) cinnamoyl dyes
09/01/1982EP0058863A1 Process for the preparation of trimethine dyestuffs
08/1982
08/24/1982CA1130130A1 Photographic silver halide materials comprising a 2-pyrazolin-5-one pentamethine oxonol dye
08/17/1982US4344879 Quaternary and basic azamethine compounds and their use as colorants
07/1982
07/07/1982EP0055428A1 Bis-(3-sulfopropyl)ethers, process for their preparation and their use as alkylating agents for organic bases
06/1982
06/23/1982EP0054511A2 4-Styryl-4'-vinylbifenyls, methods for their preparation and their use as optical whiteners
05/1982
05/25/1982US4331584 Styryl compounds and coloring synthetic resins therewith
05/18/1982CA1123846A1 Basic dyes
05/18/1982CA1123845A1 Polymeric dyes
05/18/1982CA1123844A1 Colored polymeric compounds
05/12/1982EP0051187A2 Cationic styryl dyes, their preparation and their use in dying basic dyeable natural or synthetic substrates
04/1982
04/06/1982US4323362 Dyed paper
04/06/1982CA1121344A1 Bismethinic pigments
03/1982
03/24/1982EP0047881A2 Dimethine compounds of the coumarine series, process for their preparation and their use as luminescent dyestuffs
03/09/1982US4318986 Enzyme assays
02/1982
02/16/1982US4316013 Substituted heterocyclic methine dyes
02/02/1982US4314058 Indolins styryl-like compounds
01/1982
01/26/1982US4312985 Disperse dyes from heterocyclic acetonitriles
01/20/1982EP0044061A1 Process for the dyeing in a gel state of fibrous articles spun from acrylonitrile polymer solutions in organic solvents
01/19/1982US4311836 Water-insoluble azlactone dyestuffs, processes for their preparation and their use for dyeing or printing synthetic fiber materials
01/19/1982US4311787 Photographic silver halide materials containing dispersed light-absorbing merostyryl dyes
01/19/1982US4311786 Novel sensitizers and their use in direct-positive photographic materials
01/19/1982US4311665 Separation and isolation of conjugated and unconjugated bilirubin
12/1981
12/29/1981US4308390 Process for the production of sulphoalkyl quaternary salts
12/23/1981EP0042181A2 Diphenyl derivatives
12/22/1981CA1114559A1 Dyed paper
12/15/1981US4306016 Photographic emulsions and elements capable of forming direct-positive images
12/08/1981US4304908 Methine colorant materials and the use thereof in electrophoretic migration imaging layers and processes
11/1981
11/17/1981US4301227 Electrophotographic liquid developer
11/17/1981US4301091 For whitening and for laser emission
10/1981
10/21/1981EP0038299A2 Cationic compounds
10/20/1981CA1110898A1 Migration imaging process using an unsaturated heterocyclic photoconductor containing an exocyclic point of unsaturation
10/14/1981EP0037491A2 Dimethinic dyestuffs, their preparation and their use in dyeing synthetic and natural materials
10/13/1981US4294917 Methine dyes
10/13/1981US4294916 Methine dyes
10/07/1981EP0037374A2 Methinic compounds
09/1981
09/16/1981EP0035970A2 Photographic negative material with at least one layer containing a desensitised silver halide emulsion, process for its production, utilisation of the material in the production of photographic images and use of trinuclear heptamethine cyanines as desensitisers in the photographic negative materials
09/16/1981EP0035966A2 Charge-transfer complexes of cyanine dyes; their use in manufacturing direct-positive photographic materials, the direct-positive material and images obtained therewith
09/16/1981EP0035698A2 Novel dyestuffs and their use in photographic material
09/15/1981US4289693 Textiles
09/08/1981US4288589 Cationic dyes
09/08/1981US4288534 A 2-pyrazolin-5-one pentamethine oxonol dye
09/01/1981US4287336 Chromogenic propenylenesulfone compounds
08/1981
08/26/1981EP0034279A2 Sulfoalkylating agents, process for their preparation and their use in the manufacture of quanternary sulfoalkyl salts
08/25/1981US4285885 Whiteners; brighteners; textiles; fluorescence
08/25/1981US4285863 Pigment compounds and method of preparations
08/25/1981CA1107462A1 Process for the dyeing of paper material
08/11/1981US4283488 Silver halide emulsions
08/04/1981US4282354 Photoconductors
07/1981
07/28/1981US4281115 3-Dicyanomethylidene-2,3-dihydrothiophen-1,1-dioxide derivatives
07/28/1981US4280964 Basic dyes
07/22/1981EP0032254A1 Method for the preparation of bis-styrylbenzenes
07/14/1981CA1105029A1 Thiacyanine betaine blue sensitizing dyes
06/1981
06/23/1981CA1103834A1 Process for dyeing linear polyesters in the melt
06/16/1981US4273862 Direct-positive silver halide photographic sensitive materials
06/16/1981CA1102964A1 Storage-stable quaternary styryl dye solutions
06/02/1981US4271263 Thermally developable photosensitive compositions containing acutance agents
05/1981
05/27/1981EP0029412A2 Bleachable dyestuffs, process for their preparation and their use in photographic material
05/27/1981EP0029136A2 Quaternary and basic azomethine compounds, process for their preparation and their use as dyestuffs
05/26/1981US4269976 Pigment of sodium salt of bis-methine-barbituric acid
05/19/1981US4268668 Acid monomethine-metal complex dyestuffs
05/19/1981US4268622 Photographic light-sensitive materials having dyed layers
05/12/1981US4267319 Colored polymeric compounds
05/12/1981CA1100966A1 Process for the preparation of sulphoalkyl quaternary salts
05/06/1981EP0027930A2 Water-insoluble azlactone dyestuffs, process for their preparation and their use in dyeing or printing synthetic fibrous materials
05/05/1981US4266014 Photographic materials containing light absorbing methine dyes
05/05/1981US4266003 Silver halide photographic emulsions
04/1981
04/29/1981EP0027611A2 Cationic bis-styryl dyestuffs and their use in dyeing paper or in printing inks
04/07/1981US4260742 Methine dyes from tetrahydroquinoline compounds containing n-thioether substituents
04/01/1981EP0026154A1 Process for preparing 4,4'-dinitrostilbene-2,2'-disulfonic acid and its salts and its use
03/1981
03/24/1981US4258182 Quaternized amino-substituted styryl dyestuffs
03/17/1981US4256458 Methine dyes for paper and amonically-modified fibers
02/1981
02/25/1981EP0024112A1 Method for the separation and isolation of conjugated and unconjugated bilirubin, isolated conjugated bilirubin, and reference composition containing same
02/24/1981US4252716 Benzthiazolyl-azo-indole basic dyestuffs
02/18/1981EP0023991A1 Styryl dyestuffs, their preparation and their use in dyeing paper in particular
02/17/1981US4251656 Cationic dyes
02/10/1981US4250244 Thiacyanine betaine blue sensitizing dyes
02/03/1981US4249010 Naphthostyril dyestuffs
02/03/1981US4248775 Preparation of solutions of azo methine basic dyestuffs
01/1981
01/27/1981US4247457 Cationic dyes containing an aryloxy group linked through a bridging radical to a quaternized nitrogen atom
01/21/1981EP0022753A1 Halogenated cyanine dyes with three nuclei, method of preparation of the same, use of them as sensitizers in direct positive photographic materials, direct positive photographic material with a content of trinuclear halogenated cyanine dyes and use of this direct positive photographic material for the production of direct positive images
01/20/1981US4246404 Basic indoline dyestuffs
01/20/1981US4246401 Axomethine pigments
01/07/1981EP0021513A1 Photographic silver halide materials containing dispersed light-absorbing merostyryl dyes
12/1980
12/23/1980CA1092134A1 Methine 4-nitrobenzylidene dyes
12/10/1980EP0019997A1 Cationic alpha-cyano cinnamoyl dyes, their use and coloured paper dyed therewith
11/1980
11/26/1980EP0019299A1 Photographic silver halide material having a color filter layer or an antihalation dye layer
11/26/1980EP0019298A1 Photographic silver halide material having a filter layer or an antihalation layer
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