6 results about "Propionyl chloride" patented technology

The invention discloses a device for synthesizing propionyl chloride through a thionyl chloride method, and relates to the technical field of chemical production, the device comprises a reaction kettle, the top of the reaction kettle is sleeved with a kettle cover, the middle of the kettle cover is provided with a feeding assembly, the reaction kettle comprises a kettle body, the kettle cover comprises a top cover, the feeding assembly comprises a fixed seat, and the fixed seat is provided with a screw. According to the present invention, the uniform mixing of the raw materials can be achieved, the mixing effect can be improved, the premixing can be performed during the additive adding process, the mixing efficiency can be improved, the addition amount can be accurately controlled during the additive adding, and in addition, the raw material mixing efficiency can be improved. According to the feeding assembly, the adhesion amount of the additive on the inner wall of the container and the surfaces of the parts can be effectively reduced, the loss of the additive is reduced, the adding precision and the product quality are improved, in addition, the sealing performance can be compensated in time when liquid leakage occurs between the parts of the feeding assembly due to the reduction of the sealing performance, and liquid leakage is prevented.

The application discloses a preparation method of 2-(3-(4-hydroxyphenyl)propionylamino)benzoic acid, which comprises the following steps: S1, mixing an intermediate 2, an organic solvent, a base and 4-hydroxyphenyl propionyl chloride for reaction, and performing solid-liquid separation to obtain an intermediate 3; S2, mixing the intermediate 3 and an acid catalyst for reaction to obtain 2-(3-(4-hydroxyphenyl)propionylamino)benzoic acid; the preparation method disclosed by the application takes the intermediate 2 as a raw material, and 2-(3-(4-hydroxyphenyl)propionylamino)benzoic acid can be prepared through two steps of amidation and deprotection, the method has high yield and less environmental pollution.

The invention provides a preparation method of a brucea javanica picrol derivative, which comprises the following steps: adding anhydrous pyridine into brucea javanica picrol in an ice-water bath, dissolving, stirring at room temperature, dropwise adding propionyl chloride into the system under the protection of nitrogen, stirring at room temperature, completing a thin-layer monitoring reaction, and purifying to obtain the brucea javanica picrol derivative, and also provides application of the brucea javanica picrol derivative. The brucea javanica bitter alcohol derivative is used for preparing drugs for dual targeting inhibition of abnormal lipid metabolism of cells and repairing of mitochondrial functions. The brucea javanica bitter alcohol derivative prepared by the invention can be obtained by performing functional group modification on brucea javanica bitter alcohol, has the activity of dual targeting regulation of cell lipid metabolism and mitochondrial function, and has application potential in preparation of drugs for treating metabolic diseases.

The invention relates to the field of filter bags, and discloses a PPS dust removal filter bag and a preparation method thereof, the dust removal filter bag comprises polyphenylene sulfide resin, a modified composite filler and a hyperbranched additive; the modified composite filler is prepared by grafting a modified silane coupling agent and the composite filler; according to the modified silane coupling agent, cyanuric chloride and an aminated antioxidant prepared through a reaction of 3-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride and p-phenylenediamine are subjected to substitution to prepare a triazine ring substituent, and then N, N '-bis-(2, 2, 6, 6-tetramethyl-4-piperidyl)-1, 2, 4-triazine-1, 3, 5-triazine-1, 3, 5-triazine-1, 3, 5-triazine-1, 3, 5-triazine-1, 3, 5-triazine-1, 3-triazine-1, 3-triazine-1 the triazine ring intermediate is prepared by reacting 1, 6-hexamethylenediamine with a triazine ring substituent, and the triazine ring intermediate is grafted with 3-aminopropyltriethoxysilane. The hyperbranched additive is prepared by carrying out ester exchange on an additive intermediate prepared by reacting tris (2-hydroxyethyl) isocyanurate and ethyl bromoacetate and diphenyl dihydroxysilane. The material prepared by the invention has good mechanical properties, oxidation resistance, high temperature resistance, wear resistance and ultraviolet resistance.

The utility model provides a kind of refining reaction kettle of propionyl chloride synthesis process, including box, the top of box is provided with end cover, the inside of box is provided with rotating shaft passing through end cover, rotating shaft is provided with cross bar, cross bar is slidably provided with sliding block, the bottom of sliding block is provided with rotating shaft, the top of rotating shaft is provided with gear, the bottom of cross bar is provided with L-shaped plate, the bottom of L-shaped plate is provided with rack and pinion with gear meshing, the top of rotating shaft is provided with multiple stirring teeth. Through the refining reaction kettle of propionyl chloride synthesis process described in the utility model, not only can satisfy the basic demand of material processing, but also can stir material by stirring device with higher stirring efficiency, avoid the problem that material in the inside of box has lower stirring efficiency, not satisfy the use of people.

The utility model is suitable for propionyl chloride production technical field provides a kind of filling metering equipment for propionyl chloride production, including placement ring plate, and the bottom of placement ring plate is fixedly connected with support ring table around hole, and the top of support ring table is placed with glass metering tank, and the central position at the top of glass metering tank is provided with feed inlet, and feed inlet is connected with discharge pipe, and the top of glass metering tank is installed with lifting assembly, and signal generating assembly is detachably installed on lifting assembly, and signal receiving assembly is installed on the outer wall of glass metering tank, and lifting assembly controls signal generating assembly to lift to control the feed metering of glass metering tank by signal receiving assembly receiving signal;Signal generator is fixedly installed on connecting cylinder, and connecting cylinder is spirally installed on the side wall of threaded column, and aluminum mirror is installed on mounting cylinder, and mounting cylinder is spirally installed on ring cylinder, so that signal generator and aluminum mirror can be spirally detached, convenient to replace and repair.