216 results about "N-pentanoic acid" patented technology

A climb-up pitfall trap for attracting and capturing bed bugs and the like comprises a rough exterior surface, a precipice, a smooth interior surface and sensory lures. The sensory lures include heat, carbon dioxide and / or a lure composition. The lure composition comprises a combination of (a) L-lactic acid, and (b) a fatty acid from the group consisting of (1) propionic acid, (2) butyric acid, and (3) valeric acid. The lure composition may also comprise (c) octenol. A method for attracting and capturing bed bugs and the like uses the climb-up pitfall trap in a bed bug infested environment.

The invention relates to an after-treatment method of crude tris-(2-isopropyl chloride) phosphate, in particular to a treatment method which can effectively remove the stinky 2-methyl-pentanal in the tris-(2-isopropyl chloride) phosphate. The method is characterized by comprising the steps of: introducing a certain amount of ozone in the crude tris-(2-isopropyl chloride) phosphate obtained by reaction; directly oxidizing the insoluble 2-methyl-pentanal generated by reaction into acidic materials such as 2- methyl-valeric acid and the like soluble in an alkaline solution; and conveniently removing the acidic materials in the subsequent washing process to ensure that the obtained tris-(2-isopropyl chloride) phosphate does not contain the 2-methyl-pentanal which stinks. The method of the invention reduces the content of the stinky 2-methyl-pentanal in the tris-(2-isopropyl chloride) phosphate from about 200-300ppm to less than 5ppm; and when the product is applied to the interior materials of automobiles or furniture and the like, the stink is eliminated, and therefore, the product is in the favor of consumers.

The invention provides a water-soluble antirust agent. The water-soluble antirust agent is prepared from fatty acid, specific amine, an additive, ethyl alcohol and water. The mass ratio of the fatty acid to the alcohol amine to the additive to the ethyl alcohol to the water is (2-3):(1-15):(5-10):(10-15):(80-100). The fatty acid is selected from one or more of oxalic acid, valeric acid, naphthenic acid, citric acid, benzoic acid, lauric acid, adipic acid, oleic acid and sebacic acid, the apecific amine is selected from one or more of octanoic acid dicyclohexylamine, triethanolamine, diethanol amine and ethanol amine, and the additive is an antioxidant. The antirust valid period of the water-soluble antirust agent is long and can reach 3-6 months; an antirust film is thin and is only tens of microns thick, a follow-up process cannot be influenced even though the antirust film is not removed, and the film can be removed with warm water due to the good film removability of the water-soluble antirust agent; and the water-soluble antirust agent is low in production cost, free of foreign smells and beneficial to environmental protection.

The invention discloses preparation and application of an ATP fluorescent probe for positioning mitochondria, wherein the probe has the structural formula defined in the specification and is synthesized by rhodamine B, diethylenetriamine, 5-bromo-valeric acid and triphenylphosphine as raw materials. In the system, ATP induces ring opening of a rhodamine lactam structure, strong fluorescence is produced, and high sensitivity is showed on ATP detection. At the same time, the probe shows good selectivity on the ATP, and is hardly interfered by other biological anions or inorganic anions. When the pH value is 6.0-8.0, ATP determination of the probe is not affected. In addition, the probe can be positioned in the mitochondria, and changes of the content of the ATP in the mitochondria are real-timely monitored.

The invention discloses a degradable plastic material. The degradable plastic material comprises the following raw materials in part by weight: 5-50 parts of hydroxybutyrate and valeric acid copolyester PHBV4, 50-55 parts of peanut protein prowder, 15-18 parts of nanometer cellulose whiskers, 12-15 parts of coconut fibers, 3-5 parts of amylase, 1.5-2.2 parts of silane coupling agents, 2-3 parts of potassium sorbate, 2-3 parts of dehydroacetic acids, 1.4-1.6 parts of dioctyl phthalate, 1.2-1.6 parts of zinc stearate, 10-12 parts of hard clay, 5-9 parts of kaolin, 7-11 parts of sepiolite and 1-1.4 parts of 2, 6- di-tert-butyl-4-methylphenol BHT. The degradable plastic material can be completely decomposed into micromolecule substances under effects of microorganisms; the tensile strength, the breakage elongation and the light transmission of the degradable plastic material are close to those of the existing polypropylene; and the degradable plastic material can replace the polypropylene in some fields.

The present invention provides a refrigeration lubricant composition that have necessary properties such as compatibility with a hydrofluorocarbon refrigerant, thermal stability, hydrolytic stability and low-temperature fluidity, and good lubricity, and has high stability under low temperature conditions so that crystals are prevented from being precipitated over a long term. The refrigeration lubricant includes an ester obtained from a mixed alcohol and a mixed carboxylic acid, wherein the mixed alcohol consists of 65 to 99.95 mol % of pentaerythritol and 0.05 to 35 mol % of dipentaerythritol, the mixed carboxylic acid consists of n-pentanoic acid, n-heptanoic acid, and isononanoic acid, the molar ratio of the n-pentanoic acid to the n-heptanoic acid is 0.3 or more and 10 or less, and the isononanoic acid is contained in the mixed carboxylic acid at a ratio of 10 mol % or more and 45 mol % or less.

Disclosed is an acid addition salt of donepezil, wherein acid counterion is selected from the group consisting of pamoic acid, cypionic acid, camphor sulfonic acid, enanthic acid, fusidic acid, gluceptic acid, gluconic acid, lactobionic acid, lauric acid, valeric acid, Dibenzoyl-D-Tartaric acid and terephthalic acid. Disclosed is a process for the preparation and pharmaceutical composition comprising the same. More specifically, disclosed is concerned with the pamoate acid addition salts of donepezil. Disclosed also is long acting formulation comprising the acid addition salt of donepezil and process for the preparation thereof.

Disclosed is a biodegradable resin composition containing at least one biodegradable organic high molecular compound, a flame retardant additive containing a phosphorus-containing compound, and a hydrolysis suppressing agent suppressing the hydrolysis of the at least one biodegradable organic high molecular compound. An aliphatic polyester resin is polylactic acid, polycaprolactone, polyhydroxy lactic acid, polyhydroxy valeric acid, polyethylene succinate, polybutylene succinate, polybutylene adipate, polymalic acid, polyesters synthesized by fermentation, or a copolymer containing at least one of them. A polysaccharide is cellulose, starch, chitin, chitosan, dextrane, a derivative of at least one of them, or a copolymer containing at least one of them.

The invention discloses a method for synthesizing d-biotin. The method comprises the following steps: carrying out cyclization on (2S, 3S, 4S)-5-(3,4-diamido-thiophane-2-yl) valeric acid and carbonic ester under the effect of an acid catalyst; carrying out post-treatment to obtain the d-biotin after the reaction is ended, wherein the structure of the carbonic ester is shown in the specification; R<1> and R<2> are independently selected from C1-C5 alkyls; the acid catalyst is one or combination of more of a protonic acid and a lewis acid. By adopting the synthetic method, the carbonic ester is adopted as a reagent to replace triphosgene or diphosgene to react, and generation of a virulent phosgene intermediate is avoided, so that the method is friendlier to the environment; meanwhile, the reaction efficiency is improved by selecting a specific catalyst, and the yield of the d-biotin is increased.

The invention relates to a method for recycling hexanediamine key intermediate reaction residues and co-producing carboxylic acid. The method comprises the following steps: introducing residues and water into a first fixed bed reactor, and carrying out a depolymerization reaction; carrying out heat exchange on the obtained depolymerization reaction liquid, then introducing into a second fixed bedreactor, and carrying out a hydrolysis reaction; carrying out a hydrogenation reaction on the obtained hydrolysis reaction solution, carrying out negative pressure distillation on the obtained hydrogenation reaction solution after the reaction is finished, and removing water to obtain a concentrated solution; and carrying out negative pressure rectification on the obtained concentrated solution, and collecting fractions at different gas phase temperatures to obtain corresponding products of aminocaproic acid, n-valeric acid and n-caproic acid. According to the invention, the method effectivelysolves the problem of key intermediate reaction residue pollution generally existing in existing hexanediamine production, realizes recovery and resource utilization of the key intermediate reactionresidue of hexanediamine, obtains a high-added-value product, reduces the production cost, increases the economic benefit, reduces the emission of three wastes, substantially reduces the pollution tothe environment and provides a guarantee for green and safe production.

The invention provides a functional oligomer used for a non-viral gene vector material. The functional oligomer is prepared by free radical polymerization of MA-His-OMe and MAEL through taking water-soluble thio ester as a molecular weight regulating agent. In the preparation method, MA-His-OMe and MAEL are used as monomers, AIBN (2,2-azobisisbutyronitrile) or ACVA (4,4'-azobix(4-cyano valeric acid)) is used as an initiator, and CPADB (4-cyanopentanoic acid dithiobenzoate) is used as a chain transfer agent. According to the invention, the functional oligomer is mixed with a polycation material to prepare a DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) composite which is used as the non-viral gene vector material and a cell transfection experiment is carried out. The functional oligomer has the advantages that the functional oligomer has a good protection effect on plasma DNA and can be used for improving the binding action of a complex particle and a cell membrane surface and improving the escape efficiency of the plasma DNA from lysosme / endosome in a cell, thus the transfection efficiency of the complex particle on cells such as HeLa is greatly improved, and the toxicity of the functional oligomer is greatly reduced, therefore the functional oligomer is expected to reach a clinical application level.