6 results about "Saturated aqueous solution" patented technology

The application discloses a motor lubricating grease composition, which comprises a thickening agent, base oil and an additive, and specifically, the thickening agent is 10-15%, the base oil is 85-90%, and the sum of the mass percentages of the two is 100%; the additive is additionally added in a proportion of 1-5%; the thickening agent is composed of mixture A and mixture B; a) the mixture A is a reactant of dodecahydroxy stearic acid, organic dibasic acid and saturated aqueous solution of lithium hydroxide monohydrate, and the molar ratio of the dodecahydroxy stearic acid to the organic dibasic acid is 1:0.1-1; b) the mixture B is an amide compound, and the amide compound is a mixture of one or more of dodecanamide, hexadecanamide, octadecanamide, octadecenoic acid amide, docosanamide, docosenoic acid amide, N,N-dimethyl dodecanamide and N,N'-ethylene bis-stearamide in an arbitrary ratio. The application can effectively prolong the service life of the lubricating grease, prolong the grease replenishing period and prolong the service life of the motor.

The present application relates to the field of fragrance technology, and is especially a Boju fragrance and a preparation method thereof, which is prepared from the following raw materials in percentage by weight: Boju characteristic fragrance base 5-15%, auxiliary floral fragrance base 2-8%, fragrance fixing and releasing system 3-10%, 95% volume concentration ethanol 55-70%, deionized water 10-25%, soothing agent 0.5-2%, and antioxidant 0.1-0.5%. The fragrance fixing and releasing system is composed of a molecular fragrance fixative and microencapsulated Boju fragrance essence, and the microencapsulated Boju fragrance essence is obtained by embedding part of the Boju characteristic fragrance base with β-cyclodextrin as wall material. The Boju fragrance obtained by the present application has good oxidation stability, and has no obvious color change when sealed and placed in the dark at 40℃±2℃ for 28 days. Moreover, the Boju fragrance has improved fragrance retention time, naturalness of fragrance and soothing degree. By controlling the embedding amount of the Boju characteristic fragrance base in the Boju fragrance and the ratio of the embedding amount to the saturated aqueous solution of β-cyclodextrin, the fragrance persistence of the Boju fragrance is improved.

The application discloses a kind of porous crosslinking benzyl alcohol resin sodium salt β-H elimination accelerant and its preparation method and application, it is related to β-H elimination accelerator technical field.The technical scheme is: S1 chloromethylated polystyrene crosslinked resin is poured into sodium carbonate saturated aqueous solution and heated to boiling, stirring reaction;S2 filter removes aqueous solution, washes sodium carbonate remaining in resin microspheres with water;S3 resin microspheres are dried, add anhydrous tetrahydrofuran and sodium hydride, after warming reaction, cool to room temperature and filter polymerization ball, respectively with methanol, tetrahydrofuran and n-hexane wash polymerization ball, polymerization ball is dried, obtain porous crosslinking benzyl alcohol resin sodium salt β-H elimination accelerant.The porous crosslinking benzyl alcohol resin sodium salt β-H elimination accelerant prepared by the application has the advantages of high metal salt content, strong alkaline, easy separation, etc., and is a kind of very industrial application prospect of auxiliary agent.

The application discloses a preparation method of sodium carbonate microcapsules for oil well cement self-repairing, and relates to the technical field of external aid type self-repairing materials. The self-repairing microcapsules comprise the following components: anhydrous sodium carbonate, an oligomer and a crosslinking monomer. The anhydrous sodium carbonate is configured into a saturated aqueous solution through a complex emulsion-ultraviolet light synergistic polymerization process, and the oligomer and the crosslinking monomer are chemically crosslinked by using an ultraviolet light polymerization method, so that the sodium carbonate microcapsules with high yield, high coating rate and good self-repairing performance are prepared. The preparation method is simple, fast and environment-friendly, the prepared sodium carbonate microcapsules have excellent thermal stability, substrate adaptability and self-repairing characteristics, and can realize the rapid self-repairing of oil well cement cracks in a high-temperature and high-pressure humid environment.

This invention discloses substituted isoxazoline carboxylic acid methyl ester compounds, their preparation methods, and applications. Using concentrated sulfuric acid as a solvent, concentrated nitric acid is reacted with compound (I) to generate compound (II), which then reacts with a saturated aqueous solution of hydroxylamine hydrochloride to generate compound (III). Compound (III) reacts with NCS and MMA to generate compound (IV). Iron powder is used as a reducing agent to reduce compound (IV) to generate compound (V). Using DCM and n-butanol as solvents, and EDCl and DMAP as condensing agents, compound (V) is reacted with compound (VI) to obtain the target product, the substituted isoxazoline carboxylic acid methyl ester compound. Herbicidal activity tests at 100 ppm show excellent herbicidal activity in dicotyledonous rapeseed and monocotyledonous wheat. Compound VII12, at a concentration of 10 ppm, also exhibits excellent herbicidal activity in dicotyledonous rapeseed and monocotyledonous wheat.