Patents for C09B 35 - Disazo or polyazo dyes of the type a d b prepared by diazotising and coupling (1,497)
12/1987
12/15/1987US4713113 Water solubility disazo dyes and humectant
12/08/1987US4711668 Aqueous ink composition
12/02/1987EP0247618A2 Trisazo dyes containing heterocycles
12/01/1987CA1229849A1 Electrophotographic photoreceptor
11/1987
11/24/1987US4708921 Photosensitive material containing disazo compound for use in electrophotography
11/19/1987DE3715066A1 Basic azo compounds containing and free from sulpho groups
10/1987
10/27/1987US4703113 Water-soluble triazine black dyes free from cellulose reactive groups and suitable for use in inks
10/27/1987US4702982 Electrophotographic photosensitive member comprising disazo pigment
10/20/1987US4701525 Polyazo dyestuffs having high UV absorption
09/1987
09/29/1987US4696675 Diazotization on cotton
09/08/1987US4692393 Electrophotography
08/1987
08/18/1987US4687721 Electrophotographic photoreceptor containing a trisazo compound
08/11/1987US4686287 Orange pigments for inks, paints, plastics, rubbers, printing
08/11/1987US4686285 Basic azo and non-azo compounds having one or two disubstituted 1,3,5-triazine rings each of which is linked through a bridging radical to the 1-position of a pyrazole ring
06/1987
06/30/1987US4676923 Dichroic dyestuffs for liquid crystal and liquid crystal composition
06/16/1987US4673735 Azo compounds having at least one 6-hydroxypyrid-2-one coupling component radical metal complexes thereof and intermediates therefor
05/1987
05/19/1987US4666810 Photosensitive member for electrophotography comprising azo pigments
05/19/1987US4666805 Photosensitive material containing disazo compound for use in electrophotography
05/12/1987US4665163 Yellow shades in plastics
05/12/1987US4664709 Azoacylacetamide dispersing agents and azo-pigment compositions
05/05/1987US4663442 Disazo triphenylamine compounds
04/1987
04/15/1987EP0218206A2 Disazo pigments having a piperazine bridging member
04/15/1987EP0218143A2 Recording liquid for use in jet-printing recording systems
04/15/1987EP0218137A2 Water soluble aminonaphthol disazo dyes, their preparation and their use
04/08/1987EP0217060A1 Hexakisazo dyes and aqueous ink compositions, methods for the preparation thereof and use thereof
04/07/1987US4656257 Disazo compound having an anthraquinone nucleus
03/1987
03/10/1987US4648907 High color strength diarylide yellow pigment compositions
03/03/1987US4647520 Electrophotographic photoreceptor containing an azo compound
01/1987
01/06/1987US4634764 Non-azo and azo compounds containing at least one 4,6-diamino-1-substituted-5-substituted carbamoylpyrid-2-one group
12/1986
12/16/1986US4629672 Electrography; optical recording media photsensitivity; durability
12/10/1986EP0204244A2 Tetrakis azo dyes
11/1986
11/25/1986US4624708 Sulfonated trisazo dyes for ink jet compositions
11/12/1986EP0201458A2 Trisazo black dyes
11/11/1986US4622280 Disazo compound, and photoconductive composition and electrophotographic photoreceptor containing the same
11/05/1986EP0199973A2 Process for the production on the fibre of water insoluble azo dyes
11/04/1986US4620875 Tetrakisazo dyes
10/1986
10/28/1986US4619881 Photoconductive composition and electro-photographic light-sensitive material containing a trisazo compound
10/28/1986US4619880 Electrophotographic light sensitive material contains hydrazone compound
10/28/1986US4619878 Tetrazonium salt compound, disazo compound, method for preparing the same, and photosensitive material containing said disazo compound for use in electrophotography
10/21/1986US4618672 Bisazo compounds useful as charge generating pigments in electrophotography
10/21/1986US4618555 Electrophotographic photoreceptor comprising azo compounds
10/08/1986EP0196900A2 Azo compound and solution type composition comprising the same
10/08/1986EP0196574A2 4,4'-Diaminodiphenyl compounds, process for their preparation and their use
10/08/1986EP0196573A2 Bis-diazonium salts of 4,4'-diamino-3,3'-dialkoxy-biphenylene, process for their preparation and their use
10/08/1986EP0094019B1 Water-soluble disazo compounds, process for their preparation and their use as dyestuffs
10/01/1986EP0196025A2 Process for the preparation of 4,4'-diaminodiphenyl compounds, and their use
10/01/1986EP0196023A2 4,4'-Disazo compounds of 3,3'-dialkoxybiphenylene, process for their preparation and their use
09/1986
09/23/1986US4613208 Coloring substance-containing liquid crystal mixtures
09/17/1986CN85102763A Synthesis of black dye for silk staining
09/16/1986US4612369 Disazo 4,4'-diaminostilbene-2,2'-disulfonic acids dye
09/16/1986US4612271 Photosensitive composition comprising azo compounds
09/09/1986US4610943 Electrophotographic photosensitive member contains disazo photoconductive compound
09/09/1986US4610803 Electronics
09/03/1986EP0193052A1 Azoacylacetamide dispersing agents and azo-pigment compositions
09/02/1986US4609726 Red pigments for inks or plastics
09/02/1986US4609609 Ultraviolet
07/1986
07/29/1986US4602960 Modified diarylide pigments and their preparation
07/23/1986EP0188055A2 Photoreceptor
07/15/1986US4600674 Trisazo electrophotographic photoconductive material
07/15/1986US4600527 Azo dyes, mult&color, photochromic
07/15/1986CA1207756A1 Water-soluble disazo compounds, processes for their preparation, and their use as dyestuffs
07/08/1986US4599287 Positive charging photorecptor
07/01/1986US4598033 Improved sensitivity and duravility
06/1986
06/24/1986US4596754 Electrophotographic printing original plate and electrophotographic plate making process using the printing original plate
06/10/1986US4594410 Azo compounds containing both sulfo groups and basic or cationic groups which compounds are in metal-free or 1:1 metal complex form
05/1986
05/27/1986US4591635 Dyes for leather or paper
05/13/1986US4588517 Liquid crystal composition
04/1986
04/15/1986US4582771 Disazo compound, method for preparing the same, and electrophotographic element containing the same for use in electrophotography
04/09/1986EP0176742A2 Polyazo dyes
04/02/1986EP0176195A2 Water-soluble dye
04/01/1986US4579800 High stability with respect to light and heat
03/1986
03/18/1986US4576886 Electrography
02/1986
02/25/1986CA1200970A1 Helichromic-smectic liquid crystal compositions and display cells
02/04/1986US4568623 Photoconductive compositions containing novel disazo compounds and electrophotographic photoreceptors using the same
01/1986
01/29/1986EP0169808A2 UV-absorber compounds, method for their preparation and their use as image dyes in photographic materials for the silver dye-bleaching process
01/28/1986US4567124 Electrophotographic element with trisazo photoconductor and an amine substituted charge transfer material
01/21/1986US4565424 Asymmetric dichroic dye molecules having poly(arylazo) linking groups, a bis-substituted aryl thiazyl end group, and another end group
12/1985
12/31/1985US4562131 Photoreceptor containing a trisazo compound for use in electrophotography
12/31/1985CA1198730A1 Diaryl pigments, a process for their preparation and their use
12/10/1985US4557988 Disazo compounds, photoconductive compositions and electrophotographic light-sensitive materials containing the same
11/1985
11/26/1985US4555567 For charge transfer in electrophotographic element
11/19/1985US4554231 Electrophotographic photosensitive member
11/05/1985US4551404 Disazo electrophotographic photosensitive member
10/1985
10/23/1985EP0158888A2 Disazo compounds, process for their preparation and their use
10/02/1985EP0156481A2 Photoreceptor
10/01/1985CA1194471A1 Ureylenebis (hydroxy naphthalenesulfonic acids)
09/1985
09/25/1985EP0155522A1 Photoconductive composition and electrophotographic light-sensitive material
08/1985
08/28/1985EP0153145A2 Photoreceptor
08/27/1985US4537847 Disazo photoreceptors for electrophotography
08/27/1985US4537844 Electrophotographic element containing disazo compound
08/20/1985US4536570 Direct dyes;dyeing of cellulose
08/07/1985EP0150707A1 Electrophotographic photoreceptor
08/06/1985US4533613 Disazo compounds and photoconductive composition as well as electrophotographic light sensitive element containing the same
06/1985
06/19/1985EP0145348A2 Photoreceptor
06/19/1985EP0144791A2 Photoreceptor
06/12/1985EP0144020A2 Azodyes and liquid crystalline materials containing these dyes
06/04/1985US4521591 Oil-soluble disazo dyes and their use in color-photographic recording materials for the silver dye bleach process
06/04/1985US4521217 Phthalocyanine and azo dyestuff mixtures and their use for dyeing paper
05/1985
05/28/1985US4519935 Liquid-crystalline material containing azo dyestuffs
05/08/1985EP0139944A2 Modified diarylide pigments and process for their preparation
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