1730 results about "Diazo" patented technology

A pharmaceutical composition comprising a co-crystal of an API and a co-crystal former; wherein the API has at least one functional group selected from ether, thioether, alcohol, thiol, aldehyde, ketone, thioketone, nitrate ester, phosphate ester, thiophosphate ester, ester, thioester, sulfate ester, carboxylic acid, phosphonic acid, phosphinic acid, sulfonic acid, amide, primary amine, secondary amine, ammonia, tertiary amine, sp2 amine, thiocyanate, cyanamide, oxime, nitrile diazo, organohalide, nitro, s-heterocyclic ring, thiophene, n-heterocyclic ring, pyrrole, o-heterocyclic ring, furan, epoxide, peroxide, hydroxamic acid, imidazole, pyridine and the co-crystal former has at least one functional group selected from amine, amide, pyridine, imidazole, indole, pyrrolidine, carbonyl, carboxyl, hydroxyl, phenol, sulfone, sulfonyl, mercapto and methyl thio, such that the API and co-crystal former are capable of co-crystallizing from a solution phase under crystallization conditions.

A pharmaceutical composition comprising a co-crystal of an API and a co-crystal former; wherein the API has at least one functional group selected from ether, thioether, alcohol, thiol, aldehyde, ketone, thioketone, nitrate ester, phosphate ester, thiophosphate ester, ester, thioester, sulfate ester, carboxylic acid, phosphinic acid, phosphonic acid, sulfonic acid, amide, primary amine, secondary amine, ammonia, tertiary amine, imine, thiocyanate, cyanamide, oxime, nitrile diazo, organohalide, nitro, S-heterocyclic ring, thiophene, N-heterocyclic ring, pyrrole, 0-heterocyclic ring, furan, epoxide, peroxide, hydroxamic acid, imidazole, pyridine and the co-crystal former has at least one functional group selected from amine, amide, pyridine, imidazole, indole, pyrrolidine, carbonyl, carboxyl, hydroxyl, phenol, sulfone, sulfonyl, mercapto and methyl thio, such that the API and co-crystal former are capable of co-crystallizing from a solution phase under crystallization conditions.

There are provided a negative-working photosensitive composition which can be cured by infrared rays and is less likely to suffer polymerization inhibition by oxygen during radical polymerization, and also exhibits high adhesion with a metal, and a negative-working photosensitive lithographic printing plate which is capable of directly forming images by irradiation with infrared rays from a solid or semiconductor laser based on digital signals, and also has high sensitivity and excellent printing durability. The negative-working photosensitive composition contains an infrared absorber (A), an organoboron compound (B) which functions as a polymerization initiator by using in combination with the infrared absorber (A), a compound having a polymerizable unsaturated group (C) and a diazo resin (D), and the negative-working photosensitive lithographic printing plate comprises a support, and a photosensitive layer containing the negative-working photosensitive composition formed on the support.

The invention incorporates new processes for the chemical modification of carbon nanotubes. Such processes involve the derivatization of multi- and single-wall carbon nanotubes, including small diameter (ca. 0.7 nm) single-wall carbon nanotubes, with diazonium species. The method allows the chemical attachment of a variety of organic compounds to the side and ends of carbon nanotubes. These chemically modified nanotubes have applications in polymer composite materials, molecular electronic applications, and sensor devices. The methods of derivatization include electrochemical induced reactions, thermally induced reactions (via in-situ generation of diazonium compounds or pre-formed diazonium compounds), and photochemically induced reactions. The derivatization causes significant changes in the spectroscopic properties of the nanotubes. The estimated degree of functionality is ca. 1 out of every 20 to 30 carbons in a nanotube bearing a functionality moiety. Such electrochemical reduction processes can be adapted to apply site-selective chemical functionalization of nanotubes. Moreover, when modified with suitable chemical groups, the derivatized nanotubes are chemically compatible with a polymer matrix, allowing transfer of the properties of the nanotubes (such as, mechanical strength or electrical conductivity) to the properties of the composite material as a whole. Furthermore, when modified with suitable chemical groups, the groups can be polymerized to form a polymer that includes carbon nanotubes.

The phenoxyphosphazene compound of the present invention is prepared by treating a phenoxyphosphazene compound with (a) at least one adsorbent selected from activated carbon, silica gel, activated alumina, activated clay, synthetic zeolite and macromolecular adsorbents, (b) at least one reagent selected from metal hydrides, hydrazine, hypochlorites, thiosulfates, dialkyl sulfuric acids, ortho esters, diazoalkanes, lactones, alkanesultones, epoxy compounds and hydrogen peroxide or (c) both the adsorbent and reagent. Incorporation of the phenoxyphosphazene compound prepared by the process of the invention into a synthetic resin achives the following advantages: the synthetic resin can be prevented from discoloration; when the resultant resin composition is stored for a long time, the properties of the synthetic resin, such as heat resistance, weatherability, resistance to discoloration and chemical resistance are not deteriorated; and the resin composition gives a resin composition molded article excellent in properties such as flame retardancy, thermal stability, and moldability.

The invention relates to a method for preparing highly pure hydrazinobenzene by using continuous flow micro-channel reactor. The method concretely comprises the following steps: preparing aniline hydrochloride from hydrochloric acid and aniline, respectively pumping the aniline hydrochloride and a sodium nitrite solution into the micro-channel reactor by two metering pumps to obtain a diazo salt solution, reducing the obtained reaction solution, carrying out acid separation on the reduced solution, filtering the obtained solution, neutralizing the filtered solution, and distilling the neutralized solution to obtain the highly pure hydrazinobenzene. The diazotization process is a strong exothermic reaction, and the generated diazo salt easily decomposes after standing at a high temperature for a long time, and generates toxic gases which pollute environment and even blast. The mixing effect of the heart-shaped micro-channel reactor is far better than the mass transfer effect generated by stirring, so the aniline conversion rate can reach 99%, the mixing mass transfer effect is good, and heat conduction is fast to avoid local overheating phenomenon; and the reaction can be carried out at constant temperature conditions, so the temperature runaway blast danger of general reactors is eliminated, and the safety is improved.

A compound shown by the general formula [1](wherein R1, R2 and R3 are each independently an aromatic hydrocarbon residual group, Yn− is an anion derived from a carboxylic acid having 3 or more carbon atoms with substituted fluorine atoms, and n is 1 or 2, provided that R1, R2 and R3 each is not a phenyl group having substituents at an ortho and / or a meta position), and a composition consisting of the compound and a diazodisulfone compound are disclosed. Use of the compound or the compound as an acid generator for resists produces the effects of improving the profiles of ultra-fine patterns or diminishing sidewall irregularities in ultra-fine patterns. The compound is also useful as a cationic photopolymerization initiator.

The application discloses novel synthetic compounds, modeled after unique toxins extracted from the marine invertebrate Diazona angulata useful in the treatment abnormal cell mitosis. The application also discloses novel methods for synthesis of these compounds and methods of using these compounds.

An improved phenoxyphosphazene compound is produced by treating a phenoxyphosphazene compound with (a) at least one adsorbent selected from activated carbon, silica gel, activated alumina, activated clay, synthetic zeolite and macromolecular adsorbents, (b) at least one reagent selected from metal hydrides, hydrazine, hypochlorites, thiosulfates, dialkyl sulfuric acids, ortho esters, diazoalkanes, lactones, alkanesultones, epoxy compounds and hydrogen peroxide, or (c) both the adsorbent and reagent, thereby reducing the acid value of said phosphazene compound to lower than 0.025 mgKOH / g.

The invention provides a class of heterocyclic blue disperse dye and mixed dyes thereof, wherein the general formula of the dye is the formula at right, in the general formula: R1 is hydrogen, C1-4alkyl or C1-4alkoxy; R2, R4 is C1-4 saturated linear or branched alkane; R2 and R4 are the same or different; R3 is hydrogen, hydroxy, C1-4 alkoxy, or phenoxy; R5 is hydrogen, C1-4alkoxy, cyanoethyl or phenoxy; R3 and R5 are the same or different. The preparation of the dye includes that heterocyclic diazo component is diazotized, followed by reaction with different coupling components to get brilliant blue disperse dye. The dye can have a single structure, and also be the dye with mixed structure directly prepared. The class of dyes can give rich and deep color and has high lifting force, and good dye-uptake property, which has the same results of brilliant color light for polyester cellulose dying in acid or basic dye bath. The invention also can dye polyamide, polyurethane and cellulose acetate, and ultra-fine and blended fabric thereof.

A positive photosensitive siloxane composition having high photosensitivity and having such properties as high heat resistance, high transparency and low dielectric constant may be used to form a planarization film for a TFT substrate, an interlayer dielectrics or a core or cladding of an optical waveguide. The positive photosensitive siloxane composition includes a siloxane polymer, quinonediazide compound and solvent, and a cured film formed of the composition has a light transmittance per 3 μm of film thickness at a wavelength of 400 nm of 95% or more.

Disclosed is a positive photosensitive resin composition that includes (A) a first polybenzoxazole precursor that includes: a repeating unit of Chemical Formula 1 and a thermally polymerizable functional group at least one terminal end; (B) a second polybenzoxazole precursor that includes a repeating unit of Chemical Formula 3; (C) a photosensitive diazoquinone compound; (D) a silane compound; and (E) a solvent.

Disclosed is a positive photosensitive resin composition containing (A) an alkali-soluble resin, (B) a diazoquinone compound, (d1) an activated silicon compound and (d2) an aluminum complex. Also disclosed is a positive photosensitive resin composition containing (A) an alkali-soluble resin, (B) a diazoquinone compound, (C) a compound having two or more oxetanyl groups in one molecule and (D) a catalyst for accelerating the ring-opening reaction of the oxetanyl groups of the compound (C).