34results about "Bisoxazines" patented technology

This invention pertains generally to the field of chemical synthesis and purification, and more specifically to methods of synthesizing and purifying certain 3,7-diaminophenothiazin-5-ium compounds (referred to herein as “diaminophenothiazinium compounds”) including Methythioninium Chloride (MTC) (also known as Methylene Blue). In one embodiment, the method comprises the steps of, in order: nitrosylation (NOS); nitrosyl reduction (NR); thiosulfonic acid formation (TSAF); oxidative coupling (OC); Cr(VI) reduction (CR); isolation and purification of zwitterionic intermediate (IAPOZI); ring closure (RC); chloride salt formation (CSF); one of: sulphide treatment (ST); dimethyldithiocarbamate treatment (DT); carbonate treatment (CT); ethylenediaminetetraacetic acid treatment (EDTAT); organic extraction (OE); and recrystallisation (RX). The present invention also pertains to the resulting (high purity) compounds, compositions comprising them (e.g., tablets, capsules), and their use in methods of inactivating pathogens, and methods of medical treatment and diagnosis, etc., for example, for tauopathies, Alzheimer's disease (AD), skin cancer, melanoma, viral diseases, bacterial diseases, or protozoal diseases.

Provided are an organic nano-particle which has nano-size and its particle distribution is sharp; and an organic nano-particle dispersion composition having stable and excellent dispersion property, flow behavior. Besides, provided are a color filter made of them, which has high contrast and perform excellent display property; a liquid crystal device and a CCD device by using them; and a colored photosensitive resin composition and a photosensitive resin transcription material by using them. An organic nano-particle which is consisting of organic material, its amount average particle size is 50 nm or less, and the ratio of (volume average particle size)/(amount average particle size) is 1.0~2.0.

The invention relates to sunproof water-soluble dye having the general formula (1), a method for preparing the same and application thereof. The sunproof water-soluble dye imports the group of hindered amine 4-Z-2,2,6,6-tetramethylpiperidine and the water-soluble group of sulfonic groups based on the common water-insoluble dye, so that under a condition of ensuring good water solubility of the dye, the light stability of the dye is improved, and the sunproof property of the dye is also improved. In a general formula(1), A represents a dye matrix selected from a group formed by dioxazine dye, anthraquinone dye and phthalocyanine dye which are water-insoluble; R1 represents a general formula(2): -(SO2-R)m(2); R2 represents a general formula(3): -(SO3H)n(3); in the general formula(2) and the general formula(3), m and n are both a natural number, preferably m is a natural number between 1 and 16, and n is a natural number between 0 and 2.

An object of the present invention is to obtain color filters having a high contrast, a high color purity and an improved transmittance for blue color, and a display using the color filters. In the present invention, there is used a colored composition for color filter comprising at least one coloring agent, a base polymer and at least one solvent, said base polymer containing a polyamicacid whose light transmittance decreases by 2% or less in the visible region (wavelength: 400 nm to 800 nm).

A method of producing fine particles of an anthraquinone structure-containing pigment, including mixing a solution of an anthraquinone structure-containing pigment dissolved in a good solvent with a solvent that is compatible with the good solvent but is a poor solvent for the pigment, to form fine particles of nanometer-sized anthraquinone structure-containing pigments; fine particles of an anthraquinone structure-containing pigment produced by the same; a colored pigment dispersion composition, colored photosensitive resin composition and photosensitive resin transfer material each having the same; and a color filter and a liquid crystal display device using the same.

The aim of the invention is to supply a lightproof combination with high lightproof performance and excellent insulating ability and dispersible stability and a colour filter adopting the combination. The benzimidazolone dioxazine pigment expressed by general formula (1) is taken as the tinting material of the necessary components. In the solid content containing over 40wt% lightproof combination, the optical density of the solidified film, when the film thickness is over 2.0, (in the formula, R1 and R2 respectively and independently express a hydrogen atom or an alkyl with substituent, and X expresses a hydrogen atom or a halogen atom).

The invention provides an OLED device containing certain alkali metal cluster compounds with mixed ligands, such compounds, and methods of making them. In particular, the cluster compound is a neutrally charged mixed cluster compound comprising first and second subunits with the first subunit comprising an alkali metal salt of a nitrogen containing a heterocyclic ligand bearing a anionic hydroxy group and the second subunit consisting of an organic alkali metal salt different than the first subunit.

The invention discloses a preparation method of a permanent violet pigment. The method comprises the following steps: dissolving 3-amino-N-ethyl carbazole in an organic solvent and carrying out a condensation reaction by adding chloranil in the presence of an acid-binding agent so as to obtain an organic solution containing 2,5-dichloro-3,6-di(9-ethyl-3-carbazole amino)-1,4-benzoquinone after the reaction; adding a metal salt catalyst into the organic solution obtained in the step a or simultaneously adding the metal salt catalyst and a quinone compound cocatalyst into the organic solution; feeding air or oxygen into a reaction kettle to reach a certain pressure; carrying out heat preservation at 120-180 DEG C for 2-10 hours; cooling to 80-120 DEG C after the reaction; washing a filter cake obtained after filtering with a small amount of organic solvent; then, respectively washing with methyl alcohol and water and drying, thereby obtaining a crude permanent violet pigment product. According to the method, a traditional poisonous and harmful closed-loop agent is not adopted, so that the cost of raw materials is saved; the generation of byproducts is reduced, so that the selectivity and total yield of the reaction are improved. Thus, less environmental pollution is generated.

The invention discloses a process for synthesizing permanent violet RL by a one-pot method. The process comprises the following steps: S1, alkylation; S2, nitrification; S3, reduction; and S4, condensation ring-closing. Compared with the prior art, the production process disclosed by the invention is mainly improved in alkylation, nitrification and reduction procedures, so that the operation time is greatly shortened, raw materials are saved, wastes are reduced, the labor intensity is low, a large amount of manpower and equipment energy are saved, and the intermediate procedure is simplified. According to the invention, o-dichlorobenzene is used as a solvent, so that a condenser can use common circulating water due to the boiling point of o-dichlorobenzene so as to save energy, the reaction temperature can be increased so as to shorten the reaction time, and after the reaction is finished, direct standing for layering is performed without distilling the solvent, and the next step is performed.

The present invention relates to a pigment composition or pigment dispersion that is ideal for producing the blue pixel portion of a color filter for a liquid crystal display device, and a color filter. The invention has an object of providing a color filter having a blue pixel portion that yields a liquid crystal display device having a high degree of contrast that enables the display screen to be viewed with improved clarity, and a high level of brightness that produces a brighter display screen, as well as providing a pigment composition or dispersion that can be used to produce the color filter. The above object can be realized by using a dioxazine derivative that is substituted with a sulfamoyl group having a specific polyalkylene oxide group, and a pigment composition or dispersion for a color filter that includes this dioxazine derivative and a blue organic pigment or violet organic pigment.

The invention discloses a novel phenophosphazineanthracene dioxazine dye with a structural formula (I) as described in the specification, wherein R is H or HSO3, R1 is H, CH3 or C2H5, R2 is H, CH3 or C2H5, R3 is H, CH3 or C2H5, R5 is Cl, Br, or H, and R7 is Cl, Br or H. A preparation method for the novel phenophosphazineanthracene dioxazine dye comprises the following steps: a step I, by taking 5,10-dihydro-phenophosphazine-10-oxide and a derivative thereof as reactants, adding a nitryl reagent to react to obtain mononitride; a step II, performing hydrogenation reduction on a substance prepared in the step I; a step III, reacting an intermediate prepared in the step II in a non-proton solvent; a step IV, adding an oxidization ring-closing reagent into the dicondensate prepared in the step III in the non-proton solvent to obtain the dye. The dye has the characteristics of high coloring strength and color strength, and excellent heat resistance, permeation resistance, light resistance and weather resistance, can be used for dyeing wool, cotton fibers and nylons, has remarkable ultraviolet resistance and excellent water solubility, and can be used as ultraviolet-absorption-resistant dyes and ink-jet dyes.

An object of the invention is to provide a cured film which is high in sensitivity, capable of forming a pattern in a low-taper shape after development, capable of the change in pattern opening width between before and after thermal curing, an excellent in light-blocking property, and a negative photosensitive resin composition that forms the film. The negative photosensitive resin composition contains an (A) alkali-soluble resin, a (C1) photo initiator, and a (Da) black colorant, where the (A) alkali-soluble resin contains a (A1) first resin including one or more selected from the group consisting of a (A1-1) polyimide, a (A1-2) polyimide precursor, a (A1-3) polybenzoxazole, and a (A1-4) polybenzoxazole precursor, and has a structural unit having a fluorine atom at a specific ratio, and the (C1) photo initiator contains an (C1-1) oxime ester-based photo initiator that has a specific structure.

Provided is a light-blocking pigment composition which has high insulation properties and a low dielectric constant and which can satisfy high optical density, and a light-blocking member for display, which contains the light-blocking pigment composition. When a pigment composition containing a benzimidazolone dioxazine-based pigment, a benzimidazolone-based pigment, and a carbazole dioxazine-based pigment in a specific ratio is used for a light-blocking member for display, since the light-blocking member has high insulation properties, a low dielectric constant, and high optical density, it is possible to provide a display having high light-blocking properties.

This invention pertains generally to the field of chemical synthesis and purification, and more specifically to methods of synthesizing and purifying certain 3,7 diamino-phenothiazin-5-ium compounds (referred to herein as “diaminophenothiaziniumcompounds”) including Methylhioninium Chloride (MTC) (also known as Methylene Blue). In one embodiment, the method comprises the steps of, in order: nitrosylation (NOS); nitrosyl reduction (NR); thiosulfonic acid formation (TSAF); oxidative coupling (OC); Cr(VI) reduction (CR); isolation and purification of zwitterionic intermediate (IAPOZI); ring closure (RC); chloride salt-formation (CSF); one of: sulphide treatment (ST); dimethyldithiocarbamate treatment (DT); carbonate treatment (CT); ethylenediaminetetraacetic acid treatment (EDTAT); organic extraction (OE); and recrystallisation (RX). The present invention also pertains to the resulting (high purity) compounds, compositions comprising them (e.g., tablets, capsules), and their use in methods of inactivating pathogens, and methods of medical treatment and diagnosis, etc., for example, for tauopathies, Alzheimer's disease (AD), skin cancer, melanoma, viral diseases, bacterial diseases, or protozoal diseases.