C09B 11 - Diaryl- or triarylmethane dyes

Patents for C09B 11 - Diaryl- or triarylmethane dyes (2,007)
09/1990
09/11/1990	CA1273924A1 Thermal imaging method
09/09/1990	CA2009652A1 Photoinitiator compositions containing disulfides and photohardenable compositions containing the same
09/04/1990	US4954631 Infrared absorption; black
08/1990
08/29/1990	EP0384895A2 2- Or 3-fluorane-dicarboxylic imides, process for their preparation and their use in recording materials
08/14/1990	US4948427 Process for preparing ink for ink jet printer
07/1990
07/31/1990	US4945176 Novel fluorinated laser dyes
07/31/1990	US4945171 Fluorescent dyes
07/31/1990	US4944806 Salt with inorganic acid
07/25/1990	EP0379157A1 Light-sensitive composition
07/17/1990	CA2007996A1 Light-sensitive composition
07/11/1990	EP0180643B1 Fluoran compounds
07/04/1990	EP0375989A2 Process for the preparation of triphenyl methane dyes free from sulphonic groups
06/1990
06/20/1990	EP0373432A2 Malachite green-mixing salts
06/19/1990	US4935059 Basic rhodamine dyes
06/13/1990	EP0373151A2 Process for producing 2-(4,4'-bis-(dimethylamino)-benzhydryl)-5-dimethyl-aminobenzoic acid
06/13/1990	EP0373104A1 Etherified fluorescein compounds
06/12/1990	US4933471 Fluorescent, used in cell analysis, carboxy or sulfo substituted
06/12/1990	US4933448 Chromogenic lactone compounds of benzopyrano-2H-pyrazoles
05/1990
05/17/1990	CA2002978A1 Etherified flourescein compounds
05/08/1990	US4923641 Highly concentrated stable solutions of color-forming agent: for pressure-sensitive recording materials
05/02/1990	EP0250558B1 Novel compounds and novel recording material using the same
05/01/1990	US4922020 1,1,5,5-tetra(4-aminophenyl)-pentadi-1,4-ene compounds
04/1990
04/24/1990	US4920220 For pressure or heat sensitive recording materials
04/11/1990	EP0362750A2 Photographic products and processes
04/10/1990	US4916711 Fluorescent tri-cyclic dye
04/04/1990	EP0361936A2 Lasing compositions and methods for using the same
04/04/1990	EP0361251A2 Process for the production of rhodamine dyes in the shape of granulates
04/03/1990	US4914236 Condensation of aniline and formaldehyde in the presence of water and reusable acid catalyst; hydrophobic solvent extraction
03/1990
03/28/1990	EP0360085A2 Offset printing and offset dyestuffs
03/07/1990	EP0357350A2 Novel xanthene dyes
02/1990
02/28/1990	EP0356386A2 Chromogenic phthalides
02/28/1990	EP0356199A2 Fluoran compound and record material using same
02/28/1990	EP0355864A2 Method of quantitatively measuring an oxidative substance by using triphenyl methane type leuco compounds as coloring matter
02/28/1990	EP0355335A1 Light-sensitive recording material, its use and leuco compound suitable therefor
02/27/1990	US4904637 Recording material comprising chromogenic 3,1-benzoxazines
02/08/1990	WO1990000978A1 A heat sensitive recording element and a thermographic method
01/1990
01/30/1990	US4897223 Triarylmethane dyes for pressure sensitive elements; microencapsulation
01/23/1990	US4895961 Preparation of esterified rhodamine dyes
01/02/1990	US4891298 Photographic products and processes
12/1989
12/27/1989	EP0347697A2 Basic rhodamine dyes
11/1989
11/21/1989	CA1263021A1 Pressure sensitive copy material
11/15/1989	EP0227740B1 Thermal imaging method and element
11/15/1989	EP0224568B1 Thermal imaging method and element and thermosensitive compound
11/14/1989	US4880762 Coloring phthalide compounds, method of producing the compounds and recording materials using any of the compounds as coloring component
11/07/1989	US4879269 Pressure sensitive copy material
11/02/1989	EP0340169A2 Chromogenic lactone compounds of benzopyrano-2H-pyrazoles
11/02/1989	EP0339661A2 Photochromic substances
10/1989
10/24/1989	US4876357 For pressure and heat sensitive elements
09/1989
09/20/1989	EP0333649A1 3-Basically substituted 2-methyl fluoranes
09/06/1989	EP0331636A1 2-Aralkylamino-fluorane derivatives, process for their production and their use in recording materials
09/05/1989	US4864024 Leuco dyes
08/1989
08/30/1989	EP0330444A2 Novel thiorhodamines and a novel method of preparation
08/30/1989	EP0330040A2 Triaryl methane dye precursor
08/22/1989	US4859728 Pasty pigment formulations, production and use thereof
08/01/1989	US4853361 Heat- and light-sensitive recording material
07/1989
07/19/1989	EP0324344A1 Fluoran derivatives
07/05/1989	EP0322829A2 Pigmentary salt of a triphenylmethane compound and process for making same
07/04/1989	US4845245 Catalytic oxidation of reaction product of tetramethyl-4,4'-dimethylaminobenzhydrol and m-dimethylaminobenzoic acid
06/1989
06/13/1989	US4839333 Recording material containing leuco dye
06/06/1989	US4837210 Pressure sensitive or heat sensitive elements
05/1989
05/30/1989	US4835270 Chromogenic 3,1-benzoxazines
05/24/1989	DE3838374A1 Fluorane compounds and recording material of the colour developer type using these compounds
05/17/1989	EP0316277A2 Chromogeneous 1-heterocyclically substituted 2,4-benzoxazines
05/16/1989	CA1254038A1 Thermal imaging method
05/11/1989	DE3836797A1 Leuco dyes
05/09/1989	US4829185 Neutron and/or gamma radiation detecting system
05/03/1989	EP0314480A2 Fluorescent indicator dyes for calcium working at long wavelengths
05/02/1989	US4826806 Fluoran compounds and color forming recording materials using same
04/1989
04/26/1989	EP0312898A2 Phenylacetylglutamine (pag) analytical test
04/25/1989	US4824610 Colorants for ball-point pen and ribbon inks
04/18/1989	US4822707 Positively chargeable toners for use in dry type electrophotography comprising a blue dye lake charge control agent
04/13/1989	DE3832756A1 Verfahren zur herstellung von n-aralkylierten aminofluoranverbindungen A process for the preparation of N-aralkylated aminofluoranverbindungen
04/11/1989	US4820846 Triarylmethane compounds, their preparation and use as photoconductive systems
03/1989
03/14/1989	US4812569 Used in pressure-copyable and thermoreactive recording materials
03/14/1989	US4812440 Recording material containing leuco dye
03/08/1989	EP0305567A1 Preparation of trisphenol methanes
02/1989
02/22/1989	EP0303942A2 Triaryl methane dye precurseur
02/21/1989	US4806657 Process for the preparation of fluoran compounds which are substituted by basic groups
12/1988
12/27/1988	US4794069 Spirobenzanthracene phthalide compounds, processes for preparing same and color forming recording materials containing said compounds
11/1988
11/23/1988	EP0291600A1 Process for producing 3,3-bis-(4-dimethylaminophenyl)-6-dimethylaminophthalide
11/17/1988	EP0290727A2 Pigments paste compositions, process for their preparation and their use
11/08/1988	US4783196 Chromogens
11/02/1988	EP0289122A1 Unsaturated derivatives of methylene dianiline
11/02/1988	EP0288892A2 Process for the preparation of multiple-nucleus aromatic polyamines
11/01/1988	US4781724 Process for the simultaneous dyeing and permanent shaping of hair
10/1988
10/25/1988	US4780535 Maleic and phthalic diamides
10/19/1988	EP0287121A2 Heat and light-sensitive recording material and recording method
10/18/1988	US4778753 In prescence of uricase, metal chelate and anionic surfactant; without coloring interference
10/04/1988	US4775656 Recording material containing leuco dye
10/04/1988	CA1242707A1 PHENOLSULPHONPHTHALEINYL-.beta.-D-GALACTOSIDES, A PROCESS FOR THE PREPARATION THEREOF AND DIAGNOSTIC AGENTS CONTAINING THEM
09/1988
09/21/1988	CN88100324A Lamination of transparent or translucent materials using ionic dye-counter ion complexes
09/14/1988	EP0281891A2 Dye builders, their preparation and use
08/1988
08/03/1988	EP0277034A2 Lamination of two substrates
08/03/1988	EP0276980A2 Chromogenic fluoran compounds
06/1988
06/28/1988	US4754034 Chromogenic 4,4-diaryldihydroquinazolones
06/22/1988	EP0272007A2 5- and 6- Succinimidyl - carboxylate isomers of rhodamine dyes
05/1988
05/31/1988	US4748148 Recording system utilizing phthalide derivatives as colorless chromogenic material
05/31/1988	US4747875 Chromogenic azaphthalide compound and a colour-forming recording composition containing the same
05/17/1988	US4745046 Thermal imaging method
05/04/1988	EP0266310A1 Chromogenic phthalides and azaphthalides

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