Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

32results about How to "Anhydrous" patented technology

Hyperbranched hydroxyl polyester resin, and preparation method and application of hyperbranched hydroxyl polyester resin

The invention discloses hyperbranched hydroxyl polyester resin, and a preparation method and an application of the hyperbranched hydroxyl polyester resin.The preparation method of the hyperbranched hydroxyl polyester resin comprises the following steps: 1) according to molar fraction, 1 part of dicarboxylic anhydride and 2-4 parts of polyhydric alcohol are mixed in a reaction kettle, paratoluenesulfonic acid and an organic solvent are added for reaction at 105-125 degrees under nitrogen protection, then 4-10 parts of phthalic anhydride are added, and reaction for 2-3h is carried out; and 2) according to molar fraction, 6-10 parts of epoxy compounds are added to a matrix prepared in the step 1), a catalyst and an organic solvent are added for reaction for 4-6h at 105-1130 degrees under the nitrogen protection till an acid value is less than 10mgKOH / g, and cooling and discharging are carried out. The solid content of the hyperbranched hydroxyl polyester resin reaches above 70%, and the viscosity is 3000-12000mPa.s. High solid-content bi-component polyurethane dope prepared with the adoption of the hyperbranched hydroxyl polyester resin has high construction solid content, low VOC content, high film hardness, good heat resistance and outstanding anti-corrosion property.
Owner:SOUTH CHINA UNIV OF TECH

Application of bracteose eucalyptus essential oil and complex bacterial agent thereof in preparing insect repellent for marine fishes

The invention provides application of bracteose eucalyptus essential oil and a complex bacterial agent thereof in preparing an insect repellent for marine fishes. The bracteose eucalyptus essential oil complex bacterial agent comprises the bracteose eucalyptus essential oil and streptomyces griseus HL-50 of which the bacterial content is not smaller than 5*10<8> CFU/g, wherein the preservation number of the streptomyces griseus HL-50 is CGMCC No.18424, and the primary effective constituent of the bracteose eucalyptus essential oil is 1,8-eucalyptol. The bracteose eucalyptus essential oil complex bacterial agent is easy to prepare and use, and the effects of effectively expelling various parasites which infect the marine fishes and inhibiting bacteria can be achieved simply by uniformly mixing the bracteose eucalyptus essential oil complex bacterial agent in edible feed for the marine fishes according to the use amount of 0.5-1.5 kg per ton of the feed and continuously feeding the fishes with the feed for 4-7 days; moreover, the complex bacterial agent is poisonless, harmless, and suitable for being used by the marine fishes for a long term, reduces the breeding cost, and has a wideapplication prospect.
Owner:SHANDONG LONGCHANG ANIMAL HEALTH PROD

Accordant junction differential planetary gear train indefinitely variable transmission system

The invention discloses an accordant junction differential planetary gear train indefinitely variable transmission system which comprises a differential planetary gear train transmission device and a first distributary gear sheathed on one end of an input shaft; another end of the input shaft is connected with a planet carrier, one end of a gear shaft of a second distributary gear is connected with the input shaft of an electric generator or a hydraulic oil pump; an output voltage signal of the electric generator or an output hydraulic signal of the hydraulic oil pump is sent to a speed setting controller which receives the signals output by the electric generator or the hydraulic oil pump, compares the signals with a given value, and outputs a control signal to a motor or a hydraulic motor; the motor or the hydraulic motor receives the control signal from the speed setting controller, the output shaft of the motor or the hydraulic motor is connected with the gear shaft of a sun gear; and a lockup clutch is arranged between an output geared ring and the planet carrier. The system has high mechanical efficiency, can realize high power transmission, and is provided with wider transmission ratio continuous variation range and steady speed change.
Owner:MILITARY TRANSPORTATION UNIV PLA

UV (Ultraviolet) curable polyester as well as preparation method and application of UV curable polyester

The invention discloses UV (Ultraviolet) curable polyester as well as a preparation method and application of the UV curable polyester. The preparation method of the UV curable polyester comprises the following steps: 1) mixing 1 part of triglycidyl ether and 3 to 4 parts of an acrylic monomer into a reaction kettle according to a mole fraction; adding a quaternary ammonium salt catalyst, a polymerization inhibitor and an organic solvent and reacting at 105 DEG C to 125 DEG C until the acid value is less than 10mgKOH/g; 2) adding acid anhydride, a polymerization inhibitor and p-toluenesulfonic acid into a matrix prepared by the step 1), and reacting at 105 DEG C to 130 DEG C for 2h to 4h; adding an epoxy compound which is 0.9 to 1.2 times of the mole fraction of the acid anhydride and adding the quaternary ammonium salt catalyst and the organic solvent to react until the acid value is less than 10mgKOH/g; decompressing and distilling to remove the solvent, and cooling and discharging a material, wherein the solid content of the resin reaches 100 percent or more and the viscosity is 3000mPa.s to 30000mPa.s. UV curable paint prepared by the polyester has excellent coating film performance and relatively low cost.
Owner:SOUTH CHINA UNIV OF TECH

A kind of hyperbranched hydroxyl polyester resin and its preparation method and application

The invention discloses hyperbranched hydroxyl polyester resin, and a preparation method and an application of the hyperbranched hydroxyl polyester resin.The preparation method of the hyperbranched hydroxyl polyester resin comprises the following steps: 1) according to molar fraction, 1 part of dicarboxylic anhydride and 2-4 parts of polyhydric alcohol are mixed in a reaction kettle, paratoluenesulfonic acid and an organic solvent are added for reaction at 105-125 degrees under nitrogen protection, then 4-10 parts of phthalic anhydride are added, and reaction for 2-3h is carried out; and 2) according to molar fraction, 6-10 parts of epoxy compounds are added to a matrix prepared in the step 1), a catalyst and an organic solvent are added for reaction for 4-6h at 105-1130 degrees under the nitrogen protection till an acid value is less than 10mgKOH / g, and cooling and discharging are carried out. The solid content of the hyperbranched hydroxyl polyester resin reaches above 70%, and the viscosity is 3000-12000mPa.s. High solid-content bi-component polyurethane dope prepared with the adoption of the hyperbranched hydroxyl polyester resin has high construction solid content, low VOC content, high film hardness, good heat resistance and outstanding anti-corrosion property.
Owner:SOUTH CHINA UNIV OF TECH

Accordant junction differential planetary gear train indefinitely variable transmission system

The invention discloses an accordant junction differential planetary gear train indefinitely variable transmission system which comprises a differential planetary gear train transmission device and a first distributary gear sheathed on one end of an input shaft; another end of the input shaft is connected with a planet carrier, one end of a gear shaft of a second distributary gear is connected with the input shaft of an electric generator or a hydraulic oil pump; an output voltage signal of the electric generator or an output hydraulic signal of the hydraulic oil pump is sent to a speed setting controller which receives the signals output by the electric generator or the hydraulic oil pump, compares the signals with a given value, and outputs a control signal to a motor or a hydraulic motor; the motor or the hydraulic motor receives the control signal from the speed setting controller, the output shaft of the motor or the hydraulic motor is connected with the gear shaft of a sun gear;and a lockup clutch is arranged between an output geared ring and the planet carrier. The system has high mechanical efficiency, can realize high power transmission, and is provided with wider transmission ratio continuous variation range and steady speed change.
Owner:MILITARY TRANSPORTATION UNIV PLA

Waterproof construction device suitable for steel structure building

The invention discloses a waterproof construction device suitable for a steel structure building. The waterproof construction device comprises a supporting column, wherein universal wheels are arranged at the bottom end of the supporting column; a housing is welded to the upper side of the supporting column; a length sensor is fixedly connected to the surface of the right side of the housing; a switch box is arranged on the part, close to the right side, of the front side of the housing and the upper side of the supporting column; a lock cylinder is arranged on the front surface of the switchbox; a cloth outlet is welded to the edge, close to the right side, of the bottom of the switch box; and a cutting knife is arranged at the bottom of the cloth outlet. By arranging a base layer gelling coating and a surface layer gelling coating, a nozzle is controlled through a PLC, gelling coatings are sprayed to a parapet wall, and polyester cloth is sewn through the arranged sewn polyester cloth to form a seamless waterproof system. The waterproof construction device has the advantages of being super-high in tensile strength, ultraviolet resistance, aging resistance, fatigue resistance, low-temperature flexibility, water-based performance, non-toxic, odorless, non-combustible, non-corrosive and stable in quality, and is the best steel structure roof waterproof system at present.
Owner:许成银
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products