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| Number | Title | Issue Date |
| 7855286 | Titanyl phthalocyanin crystal, method for preparing the same and electrophotographic photoconductor According to the present invention, a titanyl phthalocyanin crystal excellent in storage stability in organic solvents, a method for preparing the same and an electrophotographic photoconductor using the same are provided. In the titanyl phthalocyanin crystal, the m... | 12/21/2010 |
| 7077896 | Pigment composition and use thereof in plastic A pigment composition composed of 50 to 95% by weight of a phthalocyanine, 1 to 45% by weight of a halogenated phthalocyanine of which the number of substituents of a halogen atom is 1 to 9 and the average number of the substituents is 2.0 to 4.0 and 0.1 to 10% by w... | 07/18/2006 |
| 6472524 | Phthalocyanine compounds, process for production thereof and electrophotographic photosensitive member using the compounds Iodogallium phthalocyanine and bromogallium phthalocyanine having novel crystalline forms characterized by X-ray diffraction patterns according to CuK characteristic X-ray diffraction method and exhibiting excellent sensitivity can be obtained thro... | 10/29/2002 |
| 6323340 | Phthalocyanine compound, method for production thereof, and near infrared absorption dye using the compound A phthalocyanine compound is provided which exhibits particularly high transmittance to a visible ray, offers a highly efficient cut of a near infrared ray, excels in the ability to effect selective absorption in a near infrared region, excels in the solu... | 11/27/2001 |
| 6313288 | Mixture of titanyltetraazaporphyrin compounds and electrophotographic photoconductor using the same A mixture is made of a plurality of different titanyltetraazaporphyrin compounds, each of which is represented by formula (1): ##STR1## wherein A, B, C and D are each independently an unsubstituted or substituted benzene ring or pyridine ring, a substitue... | 11/06/2001 |
| 6232466 | Process for preparing titanyl phthalocyanine crystal by solvent treatment of amorphous or quasi-amorphous titanyl phthalocyanine A process for preparing a stable titanyl phthalocyanine crystal showing at least one diffraction peak at a Bragg angle (2θ&#b1;0.2) of 27.3° is disclosed, which comprises treating amorphous or quasi-amorphous titanyl phthalocyanine with a solvent select... | 05/15/2001 |
| 6034236 | Method for producing of phthalocyanine compound A method for producing a novel phthalocyanine compound which excels in yield and purity, allows no introduction of a chlorine atom into the phthalocyanine skeleton, and possesses relatively bulky substituents is provided. This method is characterized by c... | 03/07/2000 |
| 5932723 | Phase-directed preparation of metal-free phthalocyanine A process for preparing metal-free phthalocyanine by reductive cyclization of phthalonitrile in the presence of an aliphatic alcohol, of a redox catalyst and of an inorganic base comprises effecting the cyclization in the presence of one or more phthalocy... | 08/03/1999 |
| 5824800 | Process for preparing a metal-free phthalocyanine Phthalonitrile, an alkali metal or an alkali metal compound, and a hydrogen donor compound are heated in an organic solvent to synthesize a partially hydrogenated alkali metal phthalocyanine, which is then brought into contact with a dealkalizing agent to... | 10/20/1998 |
| 5817805 | Synthesis of bis(phthalocyanylalumino)tetraphenyldisiloxanes A cyan pigment, bis(phthalocyanylalumino)tetraphenyldisiloxane is prepared in a single reaction mixture. A phthalonitrile is reacted at high temperature with an aluminum salt in the presence of an ammonia donor such as urea, in an inert, high boiling orga... | 10/06/1998 |
| 5776576 | Phthalaocyanine compound as a layer in optical recording medium A novel phthalocyanine compound having improved solubility and high purity and containing a polymerizable vinyl group within its molecule is provided. Intermediates to this phthalocyanine compound also have improved solubility and high purity. Further, wi... | 07/07/1998 |
| 5763601 | Naphthalocyanine compounds, naphthalocyanine polymers and method for making Novel naphthalocyanine compounds are provided including nitro- and amino-substituted naphthalocyanine compounds, and vinyl-containing naphthalocyanine compounds. The compounds have improved solubility and high purity and are expected to find use as photo-... | 06/09/1998 |
| 5668276 | Hydroxygallium phthalocyanine processes A process for the preparation of hydroxygallium phthalocyanines Type A, Type B, Type C, or Type D, which comprises contacting Type V hydroxygallium phthalocyanine with an alcohol.... | 09/16/1997 |
| 5656752 | Preparation of naphthalocyanines A process is described for preparing alkoxy-octasubstituted metal-free or metal-containing naphthalocyanines by etherification of 1,4-dihydroxy-2,3-dicyanonaphthalene and formation of the metal-free naphthalocyanine with or without subsequent metallizatio... | 08/12/1997 |
| 5618930 | Phthalocyanine compound and method for making, nitro-substituted phthalocyanine compound, amino-substituted phthalocyanine compound, phthalocyanine-containing polymer and method for making, catalyst, and optical recording medium A novel phthalocyanine compound having improved solubility and high purity and containing a polymerizable vinyl group within its molecule is provided. Intermediates to this phthalocyanine compound also have improved solubility and high purity. Further, wi... | 04/08/1997 |
| 5585213 | Hole-transporting material and its use A hole-transporting material having excellent hole transportation capability and excellent durability, and an organic EL device and an electrophotographic photoconductive drum for which the above hole-transporting material is adapted and which have excell... | 12/17/1996 |
| 5556967 | Process for producing hydroxygallium phthalocyanine Hydroxygallium phthalocyanine crystals are produced by reacting a gallium trihalide with phthalonitrile or diiminoisoindoline in a halogenated aromatic hydrocarbon solvent, treating the resulting halogenated gallium phthalocyanine with an amide solvent, a... | 09/17/1996 |
| 5521306 | Processes for the preparation of hydroxygallium phthalocyanine A process for the preparation of Type V hydroxygallium phthalocyanine which comprises the in situ formation of an alkoxy-bridged gallium phthalocyanine dimer, hydrolyzing said alkoxy-bridged gallium phthalocyanine dimer to hydroxygallium phthalocyanine, a... | 05/28/1996 |
| 5512674 | Process for preparing titanyl phthalocyanine crystal by solvent dilution A process for preparing a titanyl phthalocyanine crystal showing at least one diffraction peak at a Bragg angle (2θ&#b1;0.2) of 27.3° is disclosed, which comprises dissolving or suspending titanyl phthalocyanine in concentrated sulfuric acid to form a s... | 04/30/1996 |
| 5494767 | Phthalocyanine composition, process for preparing the same and electrophotographic photoreceptor using the same Disclosed are a phthalocyanine composition which comprises having main diffraction peaks at 7.5°, 22.5°, 24.3°, 25.3° and 28.6° of Bragg angles (2θ&#b1;0.2°) in an X-ray diffraction spectrum with Cu K, a process for preparing the same, ... | 02/27/1996 |
| 5493016 | Processes for the preparation of alkoxy-bridged metallophthalocyanine dimers A process for the preparation of alkoxy-bridged metallophthalocyanine dimers by the reaction of a trivalent metal compound with ortho-phthalodinitrile or 1,3-diiminoisoindoline in the presence of a diol.... | 02/20/1996 |
| 5463044 | Process for preparing chlorogallium phthalocyanine crystal A process for preparing chlorogallium phthalocyanine comprising the steps of: reacting gallium trichloride and phthalonitrile or diiminoisoindoline in an aromatic hydrocarbon solvent; and treating the resulting chlorogallium phthalocyanine with a second s... | 10/31/1995 |
| 5430143 | Preparation of metal phthalocyanines by reacting ortho-dinitriles with metal complexes A process is described for preparing metal phthalocyanines by reacting orthodinitriles dissolved or suspended in organic solvents or pulverulent mixtures of ortho-dinitriles with anhydrous ammine-metal carboxylate salts or metal-aminocarboxylic acid compl... | 07/04/1995 |
| 5420268 | Oxytitanium phthalocyanine imaging members and processes thereof A layered photoconductive imaging member comprised of a supporting substrate, a photogenerating layer and a charge transport layer, and wherein the photogenerating layer contains Type IV oxytitanium phthalocyanine obtained by a process which comprises the... | 05/30/1995 |
| 5405954 | Metal phthalocyanines and processes for the preparation thereof Disclosed is a process for the preparation of chloroindium phthalocyanine which comprises heating a mixture of indium trichloride and ortho-phthalodinitrile in a mixture of solvents comprised of a dialkylaminoalkanol and a high boiling second solvent; and... | 04/11/1995 |
| 5350844 | Processes for the preparation of titanyl phthalocyanines A process for the preparation of a more perfect crystalline form of the Type I polymorph of titanyl phthalocyanine which comprises dissolving a precursor titanyl phthalocyanine Type I in a solution of trihaloacetic acid and alkylene chloride; adding the r... | 09/27/1994 |
| 5334856 | Image readout element with oxytitanium phthalocyanine An image readout device having a plurality of readout elements for converting image into electrical signals, each element having a photoconductive layer and a pair of electrodes which contact the photoconductive layer, and between which the layer is dispo... | 08/02/1994 |
| 5334714 | Method for preparing alkoxyphthalocyanine There is here disclosed a method for preparing an alkoxyphthalocyanine represented by the formula (1): ##STR1## wherein each of Rs is independently a secondary alkyl group having 3 to 20 carbon atoms, Met is a divalent metal atom or an oxy metal, and... | 08/02/1994 |
| 5290928 | Process for preparing oxytitanium phthalocyanine hydrate crystal A process for preparing an oxytitanium phthalocyanine hydrate crystal which, when dried at 100° C. and 0.1 mmHg for 8 hours and then allowed to stand in air at room temperature for 12 hours, has a structural formula of TiOPc.multidot.(H2 O) | 03/01/1994 |
| 5270463 | Halogenated alkoxyphthalocyanines A method for preparing a halogenated alkoxyphthalocyanine represented by the formula (7) ##STR1## wherein R3 to R6 may be different and each of them is a secondary alkyl group, X is a halogen atom, n is the number of X and in ... | 12/14/1993 |
| 5220010 | Method for preparation alkoxyphthalocyanine There is here disclosed a method for preparing an alkoxyphthalocyanine represented by the formula (1): ##STR1##... | 06/15/1993 |
| 5206359 | Processes for preparation of titanyl phthalocyanines type X A process for the preparation of titanyl phthalocyanine which comprises the treatment of titanyl phthalocyanine Type X with a halobenzene.... | 04/27/1993 |
| 5192788 | Porphyrin antiviral compositions Compositions for the treatment or prevention of AIDS or other diseases resulting from infection with the Human Immunodeficiency Virus containing one or more porphyrins. Porphyrins are tetrapyrrole macrocyle compounds with bridges of one carbon joining the... | 03/09/1993 |
| 5189156 | Processes for the preparation of titanium-phthalocyanine Type X A process for the preparation of titanyl phthalocyanine which comprises the reaction of a titanium tetraalkoxide and diiminoisoindolene in the presence of a halonaphthalene solvent; dissolving the resulting Type I titanyl phthalocyanine in a haloacetic ac... | 02/23/1993 |
| 5189155 | Titanyl phthalocyanine Type I processes A process for the preparation of titanyl phthalocyanine Type I which comprises the reaction of titanium tetraalkoxide and diminoisoindolene in the presence of a halonaphthalene solvent.... | 02/23/1993 |
| 5183886 | Process for preparation of crystalline oxytitanium phthalocyanine showing A,B or C form A process for the preparation of crystalline oxytitanium phthalocyanine comprising contacting dichlorotitanium phthalocyanine, dibromotitanium phthalocyanine or a mixture of them with at least one organic solvent selected from the group consisting of arom... | 02/02/1993 |
| 5182382 | Processes for the preparation of titaniumphthalocyanine Type X A process for the preparation of titanyl phthalocyanine Type X which comprises dissolving titanyl phthalocyanine Type I in a solution of trifluoroacetic acid and methylene chloride; adding the resultant solution to a solvent enabling precipitation of Type... | 01/26/1993 |
| 5164493 | Processes for the preparation of titanyl phthalocyanines type I with phthalonitrile A process for the preparation of titanyl phthalocyanine which comprises the reaction in a solvent of phthalonitrile and diiminoisoindoline with titanium tetraalkoxide.... | 11/17/1992 |
| 5059355 | Process for preparation of crystalline oxytitanium phthalocyanine A process for the preparation of crystalline oxytitanium phthalocyanine showing a distinct diffraction in peak at a Bragg angle (2θ&#b1;0.2°) of 27.3° in the X-ray diffraction spectrum, which comprises mechanically pulverizing oxytitanium phthaloc... | 10/22/1991 |
| 4801702 | Process for the preparation and conditioning or organic pigments A process for the preparation and conditioning of organic pigments, which comprises the use of at least one tricyclodecane alcohol or tricyclodecene alcohol.... | 01/31/1989 |
