6 results about "Fine chemical" patented technology

The invention relates to the technical field of fine chemical engineering, and concretely relates to a down feather detergent composition. The down feather detergent composition comprises, by weight,30-50 parts of a surfactant, 15-28 parts of tea seed cakes, 10-16 parts of plant ash, 5-15 parts of white carbon black, 3-9 parts of a curing agent, 2-6 parts of an enzyme preparation and 100-150 parts of washing water of rice. The feather down detergent composition uses ethylene glycol stearate, phosphatidylcholine and triglyceride as the surfactant, so the detergency of the down feather detergent composition is improved; the curing agent is added to make the down feather detergent composition stable, so the service life of the down feather detergent composition is prolonged; and the enzyme preparation is added to further enhance the detergency of the down feather detergent composition.

The invention discloses an application of whole cells of Bacillus DL-2 in catalyzing asymmetric hydrolysis in (+/-)-styralyl acetate. The whole cells of Bacillus sp. DL-2 obtained from deep sea in theWestern Pacific are used as catalysts, asymmetric hydrolysis of the (+/-)-styralyl acetate can be catalyzed, and the whole cells can be used for preparing chiral (R)-1-phenyl ethanol and (S)- styralyl acetate. In the application, the whole cells of the Bacillus sp. DL-2 are used as the catalysts, the reaction system and reaction conditions are optimized, and the (R)-1-phenyl ethanol with the optical purity greater than 96% and the (S)-styralyl acetate with the optical purity greater than 99.8% are prepared. The whole cells of the bacillus DL-2 have the advantages of simple production process,environmental friendliness and high catalytic efficiency and have great application prospects in the industrial production of fine chemicals.

The present invention relates to the field of fine chemical industry, and discloses a calcium salt of citric acid, and a preparation method thereof, and a preparation containing the calcium salt of the citric acid. The preparation method comprises: mixing an alkali calcium-containing compound, citric acid and water according to a molar ratio of 1:2-2.2:4.5-11.5, stirring, and standing. With the method of the present invention, filtration, concentration crystallization and other operations are not required, and the prepared calcium salt of citric acid has significantly high solubility in water so as to obviously expand the application range.

A full-automatic wort oxygenated yeast adding machine and a wort oxygenated yeast adding method relate to the technical fields of multi-material mixing processes of biological engineering, fermentation engineering, biological pharmacy, fine chemical engineering and chemical engineering. The full-automatic wort oxygenated yeast adding machine comprises a stand, a PLC (Programmable Logic Controller) control cabinet and a Venturi tube, wherein the PLC control cabinet is arranged on the outer side of the upper end of the stand; the Venturi tube is arranged above the stand; and the full-automatic wort oxygenated yeast adding machine is externally connected with an air compressor, a cold wort inlet, a fermentation tank, a yeast propagating tank and a steam pressure reducing station. The wort oxygenated yeast adding method comprises the following steps of: introducing cold wort through the cold wort inlet; introducing air into the air compressor; introducing yeast into the yeast propagating tank; mixing the cold wort, the air and the yeast in the Venturi tube; after mixing enabling the mixture to enter the fermentation tank. The wort oxygenated yeast adding method disclosed by the invention is feasible; due to the application of an air quality flowmeter and a volumetric flowmeter, reliable preconditions for accurate addition of oxygen and yeast to the wort are provided; the establishment of a mathematical model method provides reliable reference for the accurate addition of the oxygen and the yeast to the wort; due to the application of an open-loop control principle, the phenomenon of feedback regulation lagging in a closed-loop control is avoided; and the automatic control over the whole process is realized, so that the labor intensity and the human error probability are greatly reduced and further the quality and the uniformity of products are greatly improved.

The invention belongs to the technical field of pharmaceutical and chemical intermediates and related chemistry, and provides a preparation method of an N-1, 5-diaryl-4-pentene-1-acetamide compound. The preparation method comprises the following steps: taking a cinnamyl alcohol derivative as a raw material, under the action of copper salt, silver salt and an acid as shown in specification as co-catalysts and ligands, reacting with a styrene compound and a nitrile compound under the solvent-free condition of 80-120 DEG C; or reacting with the styrene compound directly in a nitrile solvent at the temperature of 80-120 DEG C, and reacting for 16 hours to obtain the N-1, 5-diaryl-4-pentene-1-acetamide compound. The preparation method is simple and convenient to operate, the starting materialsare cheap and easy to obtain, no by-product is generated, the possibility of industrialization is realized, and the N-1, 5-diaryl-4-pentene-1-acetamide compound is obtained in high yield; and the synthesized product can be further functionalized to obtain various compounds, and is applied to the development and research of natural products, functional materials and fine chemicals.