9 results about "Phenoxyacetic acid" patented technology

The invention relates to the technical field of photoetching, and provides an anti-reflection coating composition as well as a preparation method and application thereof. The anti-reflection coating composition comprises the following raw material components in parts by weight: 14-20 parts of extinction resin, 1-4 parts of a catalyst, 2-8 parts of a cross-linking agent and 400-1300 parts of a solvent, the catalyst comprises p-toluenesulfonic acid and organic acid A; the molecular structure of the organic acid A contains an ether bond; the organic acid A comprises one of ethoxyacetic acid, phenoxyacetic acid and 2-naphthoxyacetic acid. According to the technical scheme, the problem of poor film thickness uniformity of the BARC film in the prior art is solved.

The present invention relates to the field of photolithography technology and provides an antireflective coating composition, its preparation method, and its application. The antireflective coating composition comprises the following components in parts by weight: 14-20 parts of a matting resin, 1-4 parts of a catalyst, 2-8 parts of a crosslinking agent, and 400-1300 parts of a solvent; the catalyst comprises p-toluenesulfonic acid and an organic acid A; the organic acid A has an ether bond in its molecular structure; and the organic acid A comprises one of ethoxyacetic acid, phenoxyacetic acid, and 2-naphthyloxyacetic acid. This technical solution solves the problem of poor thickness uniformity in BARC films in related technologies.

The invention discloses a paddy field pesticide and a preparation process thereof, and relates to the technical field of paddy field pesticides, the paddy field pesticide comprises the following active components: mesotrione, pyribenzoxim and 2-methyl-4-chloro-phenoxyacetic acid sodium, the mass ratio of mesotrione to pyribenzoxim to 2-methyl-4-chloro-phenoxyacetic acid sodium is (1-10): (1-5): (10-50), and the mass ratio of mesotrione to pyribenzoxim to 2-methyl-4-chloro-phenoxyacetic acid sodium is (1-10): (1-5): (10-50). The mass ratio of the mesotrione to the pyribenzoxim to the 2-methyl-4-chloro-phenoxyacetic acid sodium is (2-5): (1-3): (20-40), and the mass ratio of the mesotrione to the pyribenzoxim to the 2-methyl-4-chloro-phenoxyacetic acid sodium is 3: 1: 30. The paddy field weeding composition which has the advantages of synergistic interaction, broad spectrum, high efficiency, resistance delay, crop safety, convenience in use and the like is successfully developed, the prominent problems in current paddy field weed control are effectively solved, and the paddy field weeding composition has extremely high application value and market prospect.

The invention discloses a synthetic method of sec-octyl phenoxyacetic acid, and relates to the technical field of organic synthesis and green chemistry. According to the synthesis method provided by the invention, phenol and sec-octanol are used as raw materials, and a one-pot method is adopted and comprises the following steps: a, putting phenol, sec-octanol, an etherification reagent, an ionic liquid catalyst, an etherification catalyst and an ionic liquid reaction medium into the same reactor, and sequentially carrying out an alkylation reaction and an etherification reaction at a certain temperature, the sec-octyl phenoxy acetic acid is obtained; and b, after the reaction is finished, cooling and filtering a reaction system, adding deionized water into filtrate for separation, collecting an organic phase, and carrying out recrystallization treatment to obtain the high-purity sec-octyl phenoxy acetic acid. According to the synthesis method disclosed by the invention, two reactions of alkylation and etherification are efficiently carried out in a compatible system, the total yield is far higher than that of a traditional method, the used catalyst and solvent can be recycled, and the whole technological process is basically free of acidic wastewater or salt-containing organic wastewater which is difficult to treat and is environment-friendly.

The application discloses a continuous preparation method of 2-methyl-4-chlorophenoxyacetic acid isooctyl ester, and belongs to the technical field of pesticide synthesis. The continuous preparation method is as follows: chloroacetic acid, isooctyl alcohol and a catalyst are mixed, and then are fed into a micro-channel esterification through a feeding pump; reaction liquid is collected, oil-water separation is performed on the reaction liquid, water is removed, and chloroacetic acid isooctyl ester is obtained; then o-cresol, a solvent, alkali and the chloroacetic acid isooctyl ester are respectively mixed, and then are fed into a continuous multi-stage stirring reactor for condensation reaction through a feeding pump; reaction liquid is collected, the alkali and the solvent are removed, and o-cresol phenoxyacetic acid isooctyl ester is obtained; finally, the o-cresol phenoxyacetic acid isooctyl ester is prepared into a 20% solution, and then is fed into a micro-channel reactor; after chlorination and removal of excessive chlorine and the solvent, 2-methyl-4-chlorophenoxyacetic acid isooctyl ester is obtained. The continuous preparation process is adopted, and the method has the advantages of short reaction time, high product purity, high yield, green environmental protection and the like.

The invention provides a method for chlorinating aromatic hydrocarbon by using a novel catalyst composition, in particular to a method for synthesizing 2-methyl-4-chloro-phenoxyacetic acid by chlorinating 2-methylphenoxyacetic acid or salt thereof, which can effectively improve the position selectivity of chlorination reaction, inhibit the generation of byproducts and the degradation of products, improve the purity, the content and the yield of the products and reduce the production cost. The method is convenient to operate and more suitable for large-scale industrial production, and green production without organic solvents is realized.

The invention belongs to the technical field of pharmaceutical analysis, and relates to a method for detecting genotoxic impurities in a crisaborole raw material by gas chromatography-mass spectrometry, the detection method adopts the gas chromatography-mass spectrometry, the detected genotoxic impurities are 2-bromo-5-(4-cyanophenoxy) benzyl acetate, the sample treatment is simple, the specificity is strong, the detection sensitivity is high, and the method is suitable for industrial production. And the detection quantity in a sample is far lower than the requirement of the limit (not greater than 0.0625 ppm) of 2-bromo-5-(4-cyanophenoxy) benzyl acetate.

This invention relates to the field of rubber sealing ring technology, and proposes a high-temperature resistant EPDM rubber sealing ring and its preparation method. A high-temperature resistant EPDM rubber sealing ring comprises the following components in parts by weight: 100 parts EPDM rubber, 60-80 parts modified molybdenum disulfide, 30-50 parts paraffin oil, 4-8 parts activator, 1-3 parts antioxidant, 0.5-1.5 parts vulcanizing agent, and 2-3 parts accelerator; the modified molybdenum disulfide is molybdenum disulfide modified with phenoxyacetic anhydride. Through the above technical solution, the problem of poor high-temperature resistance of EPDM rubber in the prior art is solved.

The present invention provides methods for reducing loss of muscle strength, muscle mass, or Type I muscle fibers in an immobilized limb by administering (E)-[4-[3-(4-Fluorophenyl)-3-[4-[3-(morpholin-4-yl)propynyl]phenyl]allyloxy]-2-methyl-phenoxy]acetic acid or a pharmaceutically acceptable salt thereof.