36results 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 diamino-phenothiazin-5-ium compounds (referred to herein as “diaminophenothiazinium compounds”) including Methylthioninium 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. Wherein: each of R1 and R9 is independently selected from: —H; C1-4 alkenyl; and halogenated C1-4alkyl; each of R3NA and R3NB is independently selected from: C1-4 alkyl; C2-4alkenyl; and halogenated C4-1 alkyl; each of R7NA and R7NB is independently selected from: C1-4 alkyl; C2-4alkenyl; and halogenated C1-4 alkyl; and X is one or more anionic counter ions to achieve electrical neutrality.

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.

A purpose of the present invention is to provide a fine coated pigment which is inhibited from becoming coarse particles and is easily dispersible. The coated pigment is a pigment, the surface of which has been coated with a resin, wherein the resin is an alpha-olefin copolymer having an acid group and the amount of the resin with which the pigment has been coated is 10-50 parts by mass per 100 parts by mass of the uncoated pigment (X).

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 purpose of the present invention is to obtain: a cured film that has high sensitivity, enables formation of a pattern of a low-tapered shape after development, is capable of suppressing a change in the dimensional width of pattern openings before and after thermal curing, and exhibits excellent light-shielding properties; and a negative-type photosensitive resin composition used to form said cured film. This negative-type photosensitive resin composition comprises an alkali-soluble resin (A), a photopolymerization initiator (C1), and a black colorant (Da), wherein: the alkali-soluble resin(A) has a fluorine atom-containing structural unit in a specific proportion and comprises a first resin (A1) that contains at least one selected from the group consisting of polyimides (A1-1), polyimide precursors (A1-2), polybenzoxazoles (A1-3), and polybenzoxazole precursors (A1-4); and the photopolymerization initiator (C1) comprises an oxime ester-based photopolymerization initiator (C1-1) having a specific structure.

The invention provides a method for preparing the crude product of Pigment Violet 23, comprising: adding condensate 2,5-dichloro-3,6-bis(9-ethyl-3-carbazoleamino)-1,4-benzene A certain amount of heteropolyacid is added to the organic solution of quinone as a ring-closing oxidation catalyst, reacted at 125-145°C under normal pressure for a period of time, filtered, washed and dried to obtain the crude product of Pigment Violet 23. In the present invention, heteropolyacid is selected as the catalyzer of ring-closing oxidation reaction, does not need to carry out dehydration operation to condensate, simplifies process, saves energy; Make reaction can advance at lower temperature; Heteropolyacid is to equipment Corrosiveness is weaker, has reduced the anticorrosion requirement to equipment; After the reaction finishes, heteropolyacid can enter waste water along with filtrate, and the impact on environment is less; The yield and purity have been greatly improved, which is conducive to improving the quality of subsequent products.

One embodiment of the present invention pertains to an aqueous inkjet yellow ink including a yellow pigment (A) having a specific partial structure, an organic solvent, a basic organic compound, and water, wherein: the yellow pigment (A) content is 1-10 mass% in the total amount of the aqueous inkjet yellow ink; the basic organic compound includes 0.1-1.25 mass% of a basic organic compound (B) having a pKa value at 25 DEG C of 9.5 or lower in the total amount of the aqueous inkjet yellow ink; and the organic solvent content is 5 mass% or less in the total amount of the aqueous inkjet yellow ink, the organic solvent having a boiling point at 1 atm of 240 DEG C or higher.