179results about "Azomethine dyes" patented technology

A novel coordination complex formed by dinuclear metal complexation is provided. The complex is a dinuclear metal complex of a compound, wherein the compound comprises a conjugation ring system substituted with: a) an electron donating group selected from —OH, —SH and —NH2; b) an indicating group selected from a chromogenic group, a fluorescent group and an electrochemical group; and c) two binding auxiliary groups, in combination with the electron donating group each of which being coordinated with the metal to provide an anion bonding site, wherein as the complex binds to a anion, the coordination of the electron donating group with the metal is weakened and electron donation of the electron donating group to the conjugation ring system is reinforced such that the reinforced electron donation by the electron donating group is transferred through the conjugation ring system to the indicating group to produce an indicating signal concomitant with the change of its electronic density. The coordination complex shows high sensitivity and high selectivity for pyrophosphate over other anions in an aqueous solvent over a wide pH range. Therefore, the complex is useful for pyrophosphate assay as a pyrophosphate sensor.

A laundry care composition comprises a laundry care ingredient or adjunct and at least one compound that is capable of changing from a first color state (i.e., the initial color state in the composition) to a second color state that is perceptibly different from the first color state. A method for treating textile articles comprises the steps of: (a) providing a laundry care composition as described above; (b) adding the laundry care composition to a liquid medium; and (c) placing the textile articles in the liquid medium.

Improved catalysts useful in a number of organic synthesis reactions such as olefin metathesis and atom or group transfer reactions are made by bringing into contact a multi-coordinated metal complex comprising a multidentate Schiff base ligand, and one or more other ligands, with an acid under conditions such that said acid is able to at least partly cleave a bond between the metal and the multidentate Schiff base ligand of said metal complex, optionally through intermediate protonation of said Schiff base ligand.

Novel chemical compounds, with application in fluorometric analytical methods, for qualitative and quantitative determination of biomolecules. The aim of the invention is to identify and prove the suitability of such compounds. Said aim is achieved with compounds of formula (1) where R′ is an antenna function, R2 is a chelate forming agent, containing a coordinated lanthanide(III)ion, X is —OH or a group with affinity for the biomolecule, bonded to a carboxylate group of the chelate forming agent by means of an amide bond and Y is —H or a group with affinity for the biomolecule, coupled to the antenna function.

A novel coordination complex formed by dinuclear metal complexation is provided. The complex is a dinuclear metal complex of a compound, wherein the compound comprises a conjugation ring system substituted with: a) an electron donating group selected from —OH, —SH and —NH2; b) an indicating group selected from a chromogenic group, a fluorescent group and an electrochemical group; and c) two binding auxiliary groups, in combination with the electron donating group each of which being coordinated with the metal to provide an anion bonding site, wherein as the complex binds to a anion, the coordination of the electron donating group with the metal is weakened and electron donation of the electron donating group to the conjugation ring system is reinforced such that the reinforced electron donation by the electron donating group is transferred through the conjugation ring system to the indicating group to produce an indicating signal concomitant with the change of its electronic density. The coordination complex shows high sensitivity and high selectivity for pyrophosphate over other anions in an aqueous solvent over a wide pH range. Therefore, the complex is useful for pyrophosphate assay as a pyrophosphate sensor.

An ink composition is disclosed which contains at least one novel dye (CU)n(SAU)m that is capable of self-assembling under appropriate conditions to form supramolecular structures. More than one novel dye (CU)n(SAU)m and / or at least one non-colored self-assembling compound (SAU')p(X)q may be incorporated in these supramolecular structures. Also disclosed is an ink-jet printing process using these novel dyes, and an ink-jet printing apparatus provided with an ink cartridge containing such a dye.

This invention relates to a Salen type ligand including three or more quaternary ammonium salts of nitrate anions, to a trivalent metal complex compound prepared from this ligand and a method of preparing the same, to a method of preparing polycarbonate by copolymerizing an epoxide compound and carbon dioxide using the complex compound as a catalyst, and to a method of separating and collecting the catalyst from the copolymer after copolymerization. This catalyst used to copolymerize an epoxide compound and carbon dioxide can be more simply prepared, and has lower catalyst preparation and recovery costs, and higher activity, compared to conventional catalysts.

The complex of the present invention containing an onium salt and a central Lewis acidic metal has a high catalytic activity at a high temperature for the copolymerization of an epoxide and carbon dioxide to produce a high molecular weight poly-carbonate.

The present invention relates to new chiral salen catalysts and methods for the preparation of chiral compounds from racemic epoxides by using new catalyst. More particularly, the present invention is to provide novel chiral salen catalysts and their uses for producing chiral compounds having high optical purity to be used as raw materials for preparing chiral medicines or food additives in a large scale economically, wherein the chirl salen catalyst having a particular molecules structure can be reused continuously without any activating process of used catalysts and cause no or little racemization after the reaction is completed because it maintains its catalytic activity after the reaction process.

The present invention relates to a method and catalysts for the stereoselective addition of a nucleophile to a reactive π-bond of a substrate. The chiral, non-racemic catalysts of the present invention constitute the first examples of catalysts for nucleophilic additions that comprise a main-group metal and a tri- or tetra-dentate ligand.

The present invention provides metal-containing compounds that include at least one β-diketiminate ligand, and methods of making and using the same. In certain embodiments, the metal-containing compounds include at least one β-diketiminate ligand with at least one fluorine-containing organic group as a substituent. In other certain embodiments, the metal-containing compounds include at least one β-diketiminate ligand with at least one aliphatic group as a substituent selected to have greater degrees of freedom than the corresponding substituent in the β-diketiminate ligands of certain metal-containing compounds known in the art. The compounds can be used to deposit metal-containing layers using vapor deposition methods. Vapor deposition systems including the compounds are also provided. Sources for β-diketiminate ligands are also provided.

A new ligands that include a benzene ring in the backbone can be combined with a metal or metal precursor compound or formed into a metal-ligand complex catalyze a number of different chemical transformations, including olefin polymerization reactions. The ligands, complexes formed with the ligands and compositions including the ligands are useful catalysts, depending on the reaction.

To provide a two-photon absorption dye-containing material having a great off-resonant two-photon absorption cross section and comprising a two-photon absorption dye capable of decoloring itself through off-resonant two-photon absorption, useful for a three-dimensional refractive index or absorption index modulation material, a three-dimensional optical recording medium, three-dimensional refractive index modulation method and recording and reproducing method for a three-dimensional optical recording medium a two-photon absorption dye-containing material comprising at least a two-photon absorption dye capable of decoloring itself through two-photon absorption.

A coloring matter absorbing a near-infrared ray which comprises a diimonium salt containing a sulfonimide as an anion moiety, represented by the general formula (1): wherein R may be the same or different and represents a moiety selected from the group consisting of an alkyl group, a halogenated alkyl group, a cyanoalkyl group, an aryl group, a hydroxyl group, a phenyl group, and a phenylalkylene group, and R1 and R2 may be the same or different and each represent a fluoroalkyl group, or together form a fluoroalkylene group. The coloring matter absorbing a near-infrared ray is excellent in the resistance to heat and moisture, and thus exhibits an ability of absorbing a near-infrared ray not lowering for a long period of time. A filter for cutting off a near-infrared ray manufactured by using the coloring matter can be advantageously used for wide applications such as a plasma display panel, an optical lens, a glass for an automobile, and a glass for a building material, due to its excellent resistance to heat and moisture.

Dichroic dyes, compositions thereof, and liquid crystal compositions, microencapsulated liquid crystal compositions and liquid-crystal display elements employing the same. The dichroic dyes have high photostability in addition to excellent solubility. Furthermore, the liquid crystal composition employing the above dichroic dyes can have an orientational order parameter more than 0.7.

The present invention provides polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these hybrid metallocene compounds and for using such compounds in catalyst compositions for the polymerization and copolymerization of olefins are also provided.

The present invention provides polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these hybrid metallocene compounds and for using such compounds in catalyst compositions for the polymerization and copolymerization of olefins are also provided.

A novel dye according to formula (I): capable of self-assembling thus forming supra-molecular structures. These self-assembling dyes may be advantageously used in an ink-jet ink for improving the stability of ink-jet ink images to light fading.

A lightfast colorant and a lightfast ink composition including the lightfast colorant utilize a lightfast colorant that is derived by covalently binding a cinnamate derivative and a conventional colorant. The lightfast colorant improves storage stability as well as lightfastness when added to an ink composition.

This invention relates to a Salen type ligand including three or more quaternary ammonium salts of nitrate anions, to a trivalent metal complex compound prepared from this ligand and a method of preparing the same, to a method of preparing polycarbonate by copolymerizing an epoxide compound and carbon dioxide using the complex compound as a catalyst, and to a method of separating and collecting the catalyst from the copolymer after copolymerization. This catalyst used to copolymerize an epoxide compound and carbon dioxide can be more simply prepared, and has lower catalyst preparation and recovery costs, and higher activity, compared to conventional catalysts.

A light absorption anisotropic film, having at least one dichroic dye, in which the light absorption anisotropic film shows a diffraction peak derived from a periodic structure in a direction in a plane of the light absorption anisotropic film in X-ray diffraction measurement and the diffraction peak has a half width of 1.0 Å or less.

A method for preparing a layered perovskite compound thin film having a film thickness and structure controlled at a monomolecular layer and capable of combining various layered perovskite compounds at the level of a monomolecular layer. The method a superlattice structure represented by the general formula A2MX4 where A is an organic ammonium molecule, M is a group 4 element or transition metal and X is halogen layers of organic ammonium molecule "A" and layers of inorganic halide "MX4" are alternately stacked. A monomolecular film of an organic amine hydrohalic acid salt having a long-chain alkyl group is spread out on the surface of a water solution of an inorganic halide MX2 and a methylamine hydrohalic acid salt. By leaving the monomolecular film, a layered perovskite compound monomolecular film is formed on the surface of the water solution. This layered perovskite monomolecular film is transferred and stacked onto a substrate on a one by one basis by using the Langmuir-Blodgett method.

The present invention provides a colored curable composition comprising at least one azomethine dye represented by the following formula (I) and one tetraazaporphyrin dye represented by the following formula (A), wherein R11 to R15: H or a substituent group; R16 and R17: an alkyl, an alkenyl, an aryl or a heterocyclic group; Za and Zb: —N═, or —C(R18)═, in which R18 is a hydrogen atom, an alkyl, an alkenyl, an aryl, or a heterocyclic group; rings A1 to A4: a benzene ring or a pyridine ring provided that at least one of rings A1 to A4 is a pyridine ring; R1 and R2: H or an alkyl provided that R1 and R2 do not simultaneously represent a hydrogen atom; m=1 to 8; and n=1 to 4.

The present invention related to a method of manufacturing a polycarbonate including the process of copolymerizing epoxide compound and CO2 using cobalt(III) or chromium(III), where the ligands contains at least 3 ammonium cations, central metal has formal −1 charge, and conjugated anions of the two cationic ammonium groups are acid-base homoconjugation, as catalyst.According to the present invention, the initial induction time can be reduced when the said polycarbonate is manufactured and it is possible to improve the activity of the catalyst and the molecular weight of the obtained polymer.

A composition contains (A) a hydrosilylation reaction catalyst and (B) an aliphatically unsaturated compound having an average, per molecule, of one or more aliphatically unsaturated organic groups capable of undergoing hydrosilylation reaction. The composition is capable of reacting via hydrosilylation reaction to form a reaction product, such as a silane, a gum, a gel, a rubber, or a resin. Ingredient (A) contains a metal-ligand complex that can be prepared by a method including reacting a metal precursor and a ligand.

An ink composition is disclosed which contains at least one novel dye (CU)n(SAU)m that is capable of self-assembling under appropriate conditions to form supramolecular structures. More than one novel dye (CU)n(SAU)m and / or at least one non-colored self-assembling compound (SAU′)p(X)q may be incorporated in these supramolecular structures. Also disclosed is an ink-jet printing process using these novel dyes, and an ink-jet printing apparatus provided with an ink cartridge containing such a dye.

A colored photosensitive resin composition comprising a coloring agent (A), an alkali-soluble resin (B), a polymerizable compound (C), a polymerization initiator (D) and a solvent (E), wherein the coloring agent (A) comprises a thiazole dye (A-I), and the alkali-soluble resin (B) is a copolymer containing a constituent unit derived from at least one monomer (a) selected from the group consisting of an unsaturated carboxylic acid and an unsaturated carboxylic acid anhydride. [In formula (A-I), X represents a nitrogen atom or CH; R41 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R42 represents a hydrogen atom, a cyano group, a carbamoyl group or the like; R43 represents an oxygen atom, C(CN)2 or the like; and R44 to R46 independently represent a hydrogen atom, an alkyl group having 1 to 20 carbon atoms which may be substituted by an amino group or a halogen atom, or the like.]

The present invention provides metal-containing compounds that include at least one β-diketiminate ligand, and methods of making and using the same. In certain embodiments, the metal-containing compounds include at least one β-diketiminate ligand with at least one fluorine-containing organic group as a substituent. In other certain embodiments, the metal-containing compounds include at least one β-diketiminate ligand with at least one aliphatic group as a substituent selected to have greater degrees of freedom than the corresponding substituent in the β-diketiminate ligands of certain metal-containing compounds known in the art. The compounds can be used to deposit metal-containing layers using vapor deposition methods. Vapor deposition systems including the compounds are also provided. Sources for β-diketiminate ligands are also provided.