7 results about "Nitropropane" patented technology

The invention discloses a massage composition for relieving muscle and neck, shoulder, waist and leg joint pain and a preparation method. The composition is prepared from pallas pit viper oil, a snow lotus herb extract, a pilose antler extract, a dragon's blood extract, garden balsam stem oil, a myrrh extract, saffron crocus oil, vanillyl butyl ether, ginger root oil, tortoise shells, menthol, frankincense oil, cetostearyl alcohol, a stearyl trimethyl ammonium chloride mixture, 2-bromine-2-nitropropane-1, 3-diol, methylparaben and water. The invention further provides a preparation method of the massage composition for relieving muscle and neck-shoulder-waist-leg joint pain and application of the composition. The massage composition for relieving the pain of the muscles, the neck, the shoulders, the waist and the legs shows remarkable effects in the aspects of relieving the pain of the muscles, the neck, the shoulders, the waist and the legs and relieving fatigue, the pain degree of a patient can be effectively relieved, and the life quality of the patient is improved.

The application discloses a Talaromyces with multi-oxidase synergistic expression capacity and a fermentation method and application thereof. Talaromyces sp. The Talaromyces (Talaromyces autumnalis) Ta-lac is preserved in the China General Microbiological Culture Collection Center on July 11, 2025, and the preservation number is CGMCC No. 42125. Compared with the engineering strain for biosynthesis of laccase, the strain has strong environmental adaptability, can naturally synthesize laccase, and has relatively stable genome, no potential risk of exogenous genes and relatively high safety. The Talaromyces has a short growth cycle, high yield of laccase, nitropropane dioxygenase, hydrogenase coenzyme dioxygenase and squalene monooxygenase and high lignin degradation activity in a fermentation process. The Talaromyces Ta-lac is applied to degradation of toxin dye wastewater, and has remarkable detoxification and decolorization effects.

Examples of a biocide composition include an activated halogen compound selected from the group consisting of 2,2-dibromo-3-nitrlopropionamide; 2-bromo-2-nitropropane-1,3-diol; and 1,2-dibromo-2,4-dicyanobutane; benzisothiazolin-3-one; a pyridine-N-oxide selected from the group consisting of zinc pyrithione and sodium pyrithione; and a carbamate derivative selected from the group consisting of 3-iodo-2-propynyl butyl carbamate; zinc bis(dimethyldithiocarbamate); and bis(dimethyl carbamoyl) disulfide.

The invention discloses a high-yield 2-nitropropane preparation process, and belongs to the technical field of organic synthesis and industrial catalysis. According to the method, 1-nitropropane is used as a raw material and is subjected to a gas-phase catalytic isomerization reaction through a fixed bed reactor filled with a Pt-CeO2 / ZSM-5 solid isomerization catalyst in the presence of diluent gas. The reaction is continuously carried out at a specific temperature and pressure, the generated effluent is subjected to cooling and gas-liquid separation, the liquid phase enters a rectification system to be separated to obtain a high-purity 2-nitropropane product, and the unreacted 1-nitropropane and diluent gas can be recycled. According to the present invention, the process has advantages of high atom economy, low raw material cost, easy catalyst separation, good stability, high reaction selectivity, compact process flow and extremely low wastewater generation amount, and the efficient, green and continuous 2-nitropropane production is achieved.

The present invention provides a water treatment agent composition comprising water, a fluorescent substance which is a tracer substance, and a specific slime inhibitor, and having good stability, as well as a water treatment method using the water treatment agent composition. [Solution] A water treatment agent composition comprising water, a fluorescent substance, and at least one of isothiazolone compound, 2,2-dibromo-2-nitroethanol, and 2-bromo-2-nitropropane-1,3-diol as a slime inhibitor, wherein the pH is less than 1.

This application discloses a method for preparing 2-nitropropane, using ammonia, ozone, and acetone as starting materials and a silicon-aluminum-titanium composite catalyst as the catalyst. The reaction is carried out in a slurry-bed tubular reactor with continuous feeding to obtain 2-nitropropane. The silicon-aluminum-titanium composite catalyst is treated with hydrogen peroxide before use. This application achieves high conversion and yield rates, and the use of clean energy sources such as ozone and deionized water in the reaction improves reaction safety and reduces costs.

The invention provides a preparation method of an enantiomer-enriched amino alcohol compound, which comprises the following steps: by taking 2-nitropropane and fatty aldehyde as raw materials, carrying out Henry reaction under the action of a catalytic system to obtain an enantiomer-enriched nitro alcohol compound; and reducing to obtain the enantiomer-enriched amino alcohol compound. A catalytic system composed of an efficient chiral imine ligand and a metal catalyst is adopted to catalyze 2-nitropropane and fatty aldehyde to be subjected to asymmetric Henry reaction, and a nitro alcohol intermediate is constructed with high enantioselectivity; and reducing nitryl through catalytic hydrogenation to obtain amino alcohol products with high enantiomer enrichment. Reaction conditions are mild, operation is simple, raw materials are easy to obtain, yield is high, and the method is suitable for large-scale production; a green solvent is used in the reaction process, byproducts are few, and the method is environment-friendly and conforms to the green chemistry principle. The whole process route is simple and efficient, and a feasible new way is provided for industrial preparation of enantiomer-enriched amino alcohol compounds.