7results about How to "Improve chemical structure" patented technology

The invention discloses a photosensitive resin for SLA3D printing precision casting and a preparation method thereof. The preparation raw materials comprise the following components in percentage by mass: 40 to 60 weight percent of polyether acrylate resin oligomer, 30 to 50 weight percent of polyether monomer diluent, 3 to 6 weight percent of photoinitiator, 0 to 5 weight percent of coloring agent, 0.5 to 1 weight percent of polymerization inhibitor, 0.1 to 3 weight percent of nano filler, 10 to 15 weight percent of micronized wax powder and 0.1 to 1.5 weight percent of flatting agent. According to the photosensitive resin disclosed by the invention, the nano filler is introduced, so that the resin can keep high dimensional stability, mechanical property and compatibility with a molten metal solution under a high-temperature casting condition, and high temperature resistance, high strength, high toughness and high wear resistance are achieved; and wide application of the SLA3D printing technology in the high-precision and advanced fields of aerospace, automobile manufacturing, medical instruments and the like is promoted.

The invention belongs to the technical field of antitumor drugs, and particularly discloses an application of a N2, N3-di-tert-butylquinoxaline-2, 3-diamine derivative in preparation of an antitumor drug composition. The N2, N3-di-tert-butylquinoxaline-2, 3-diamine derivative provided by the invention has a remarkable inhibition effect on human colon cancer cells HCT116, human liver cancer cells HepG-2, human lung cancer cells A549, human prostate cancer cells PC3, human cervical cancer cells Hela, human glial cancer cells U87 and human malignant breast cancer cells 4T1, shows excellent anti-tumor characteristics, and can be used for preparing medicines for treating tumors. The compound can be used as an anti-tumor lead drug molecule, and has a good development and application prospect in the aspect of developing anti-tumor drugs.

The invention discloses an application of a compound in preparation of a medicine for treating allergic rhinitis. The CDK2 inhibitor can relieve inflammatory infiltration of nasal mucosa tissues, effectively improve the inflammatory degree of allergic rhinitis and reduce secretion of mucus, and has a remarkable curative effect on treating allergic rhinitis. The raw materials involved in the designed synthesis route are easy to obtain, the reaction operation is simple, the reaction condition is mild, the method can be used for industrial production, and the obtained medicine has wide application and transformation and great practical value.

The invention relates to a water-saving fabric printing and dyeing method which comprises the following steps: a pretreatment stage: soaking a fabric in a solution containing a pretreatment agent, stirring for 30-40 minutes at 40-50 DEG C for desizing treatment, washing the fabric with clear water after the treatment is completed, removing the residual pretreatment agent, and naturally air-drying; a modification stage: putting the pretreated polyester fabric into a first modification liquid, oscillating for 20-30 minutes, drying, putting the fabric treated by the first modification liquid into a second modification liquid, heating for 60-70 minutes at the temperature of 50-70 DEG C, taking out, and naturally air-drying to obtain the modified polyester fabric; in the dyeing stage, the modified fabric is soaked in dye liquor to be dyed; and a washing stage: immersing the dyed fabric in deionized water, stirring or gently scrubbing for 10-20 minutes at room temperature, and then naturally air-drying. The invention discloses a water-saving printing and dyeing method for fabrics, and aims to realize an efficient, water-saving and environment-friendly printing and dyeing process.

The invention belongs to the technical field of catalysts, and particularly discloses a Pd monatomic and nanoparticle synergistic catalyst and a preparation method and application thereof.The active component Pd of the catalyst is loaded on a zirconium phosphate carrier in the forms of monatomic and nanoparticles; the zirconium phosphate carrier is of an amorphous structure, and the specific surface area is 120-180m < 2 > / g; and the mass fraction of the active component Pd in the catalyst is 0.3-3 wt%. The invention solves the problem that the activity, stability and selectivity of the catalyst in the alkyne semi-hydrogenation reaction cannot be combined at the same time through the simple synthesis method.

This application relates to an organic compound and electronic components and devices comprising the same. The organic compound of this application has the structural formula shown in Formula 1. Applying this organic compound to an organic electroluminescent device can significantly improve the device's performance.

This invention discloses a method for preparing fluorinated aryl ketone compounds and their applications, relating to the field of organic synthesis technology. The method includes the following steps: using fluorinated olefins, benzoyl cyanates, and boric acid compounds as raw materials, and reacting them under visible light irradiation in the presence of a photocatalyst, a base, and an organic solvent to prepare fluorinated aryl ketone compounds. This invention uses fluorinated olefins as the key fluorinated substrate and achieves a multi-component synergistic reaction through visible light catalysis, solving problems such as substrate limitations, poor selectivity, and low yield in existing methods. The prepared fluorinated aryl ketone compounds can be used in the preparation of antibacterial, anti-inflammatory, and anticancer drugs, offering significant economic benefits.