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

51results about How to "Remove protection" patented technology

Method for preparing polyurethane-polyacrylic ester microemulsion

The invention discloses a method for preparing cation-type polyurethane-polyacrylic ester microemulsion which is organic-solvent-free and emulsifier-free. The method substitutes inert vinyl monomers for organic cosolvent used during the conventional polyurethane preparation, for purpose of obtaining polyurethane prepolymer by polymerizing isocyanate and polymer polyalcohol; then after temperaturereduction, neutralization and water dispersion, functional monomers with an appropriate amount are introduced; and then the polymerization of the vinyl monomers is further initiated under the action of water-soluble azo initiator so as to obtain the cation-type solvent-free polyurethane-polyacrylic ester compound microemulsion. The method completely eliminates the organic cosolvent added in conventional waterborne polyurethane, thereby achieving the true environment-friendliness. In the preparation process no emulsifier needs to be added; obtained product grains realize nanometer-level particle size and good performance; and through formula adjustment, the obtained product grains can be used both for waterbone coatings but also in the adhesive field.
Owner:SHAANXI UNIV OF SCI & TECH

Method for preparing polyurethane surface sizing agent

The invention discloses a method for preparing a novel polyurethane surface sizing agent. Diisocyanate and polyglycol are first uniformly blended and then added with a moderate amount of catalyst to react, so that polyurethane prepolymer is obtained; hydrophilic chain extender is then added to react with the polyurethane prepolymer; the temperature is reduced, organic base is added to regulate to the pH value, deionized water is added under high-speed shearing, and after emulsification, polyurethane emulsion is obtained; and the temperature is increased, vinyl monomer is added in the polyurethane emulsion, and initiator is used to initiate polymerization, so that the modified aqueous polyurethane emulsion surface sizing agent is prepared. The invention can completely eliminate the adverse affection of small-molecular emulsifier and organic solvent on the application performance of sizing agent product and environment protection, and replaces internal sizing.
Owner:SHAANXI UNIV OF SCI & TECH

Pulper low in power consumption and noise

The invention provides a pulper low in power consumption and noise. The pulper mainly comprises a cylinder wall, a motor, a reducer, a seal device, a spindle, a spiral blade rotor, upper vortex board grooves, lower vortex board grooves and vortex boards. The pulper is characterized in the motor provides power, and the power is transmitted to the spiral blade rotor sequentially through the reducer and the spindle. By the inner and outer crescent arc transitions of the upper and lower vortex board grooves and the crescent cylindrical four-side arc structures at the inner edges of the vortex boards, flows can stably generate four vortexes at the four-side arcs of the vortex boards, vortex kinetic energy pulping is achieved, and low power consumption is achieved. Due to the fact that the hollow holes in two sides of the upper and lower vortex board groove retaining plates and in the middle portions of the vortex boards can be filled with damping and sound absorbing materials, fluid exciting force and solid noises can be absorbed, and low noise is achieved.
Owner:UNIV OF JINAN

Environment-friendly fluorinated polyurethane-polyacrylate emulsion and preparation method thereof

The invention discloses an environment-friendly fluorinated polyurethane-polyacrylate emulsion and a preparation method thereof. The preparation method comprises the following steps: polymerizing diisocyanate, dimethylolpropionic acid, a functional monomer and an anionic hydrophilic chain extender under the presence of a catalyst so as to obtain an isocyanate-terminated double-bond prepolymer; neutralizing with alkali and adding the water solution of a hydrophilic small-molecule chain extender for dispersing, and further initiating a fluorinated monomer and an acrylic monomer under the effect of a water-soluble initiator so as to obtain the environment-friendly fluorinated polyurethane-polyacrylate emulsion. The emulsion adopts a self-emulsifying method, and is subject to a post-chain extension method and free from any organic solvent or small-molecule emulsifier; and the emulsion is good in storage stability, and by introducing fluorine atoms, the water resistance and the solvent resistance of waterborne polyurethane are effectively improved. The emulsion is applicable to a waterborne coating, and a prepared coating film has the properties of excellent water and oil-proofing performance, heat resistance, being non-toxic, safe and highly glazed, and the like.
Owner:广东拓普合成科技股份有限公司

Two-AC and one-DC series-parallel microgrid structure suitable for multi-station integration

The invention discloses a two-AC and one-DC series-parallel microgrid structure suitable for multi-station integration. The series-parallel microgrid structure is formed by series-parallel connectionof an alternating-current sub-microgrid 1, an alternating-current sub-microgrid 2 and a direct-current sub-microgrid, wherein the alternating-current sub-microgrid 1 is connected with the direct-current sub-microgrid through a power conversion device and a connecting point 1, and the alternating-current sub-microgrid 2 is connected with the direct-current sub-microgrid through a connecting point2; the connecting point 1 and the connecting point 2 are DC / AC conversion devices, the connecting point 2 is a standby power supply point of the connecting point 1, the energy of the connecting point2 can only flow in one direction, and the voltage is rapidly supported for the direct-current sub-microgrid only when the connecting point 1 fails; the alternating-current sub-microgrid 2 comprises aNo.2 energy storage and station transformer, a 400V / 380V isolation transformer, an energy storage battery and an AC / DC conversion device; the NO.2 energy storage and station transformer is connectedwith an external network, the 400V / 380V isolation transformer and the AC / DC conversion device, and the AC / DC conversion device is connected with the energy storage battery. The series-parallel microgrid structure is high in reliability, wide in coverage, high in fusion degree and excellent in economy.
Owner:CEEC HUNAN ELECTRIC POWER DESIGN INST

Preparation process of non organic solvent type fluorine-containing soapless emulsion

InactiveCN100999562AEliminate application performanceRemove protectionEmulsionWater soluble
The present invention discloses preparation process of no organic solvent and no soap fluoric emulsion. Fluoric copolymer is first obtained through mixing (methyl) fluoric acrylate, (methyl) acrylic acid, vinyl monomer and liposoluble initiator, polymerizing of the mixture in organic solvent and alkali neutralizing; and then mixed with vinyl monomer, water soluble fluoric copolymer and water to pre-emulsify and initiated with initiator to polymerize to obtain the no organic solvent and no soap fluoric emulsion. The present invention can eliminate the adverse effect of small molecular weight emulsifier and organic solvent on the application performance of fluoric emulsion product, raise the surface performance of fluoric coating and eliminate organic volatile in product.
Owner:SHAANXI UNIV OF SCI & TECH

Crosslinking self-emulsifying cation full fluorine copolymer soap-free emulsion and preparation thereof

InactiveCN101508755AGood emulsion stabilityImproved storage and dilution stabilityPrepolymerIon
The invention belongs to the polymer chemistry field, in particular to a cross-linking self-emulsifying cationic perfluorocopolymer soap-free emulsion and a preparation method thereof. The soap-free emulsion overcomes the problems of the prior art such as poor film forming property, low conversion rate of fluoride monomer, and adverse impact on water resistance and oil resistance of fluorine-containing emulsion products and environmental protection. The technical proposal is as follows: the cross-linking self-emulsifying cationic perfluorocopolymer soap-free emulsion is prepared by the following method: (1) preparing a monomer pre-emulsion mixture: mixing a cationic monomer with vinyl monomer, perfluoroalkyl (methyl) acrylate and a functional monomer to obtain a mixture solution A; and then mixing the mixture solution A with an oil soluble initiator to obtain a mixture solution B, pre-emulsifying and evenly mixing the mixture solution B by ultrasonic agitation or mechanical agitation; (2) preparing a water soluble perfluoroalkyl acrylate prepolymer; and (3) preparing the perfluoroacrylate copolymer soap-free emulsion. The cross-linking self-emulsifying cationic perfluorocopolymer soap-free emulsion has the advantages of good stability, good film forming property of film coating, high conversion rate of the fluoride monomer, safety and environmental protection.
Owner:SHAANXI UNIV OF SCI & TECH

Infrared touch control liquid crystal integrated screen display module

The invention discloses an infrared touch control liquid crystal integrated screen display module. An infrared frame of the infrared touch control module comprises a touch control sensing element mounting part and an infrared frame extension part extending downwards along the outer side of the touch control sensing element mounting part; liquid crystal panel protective glass is stuck to the front surface of a liquid crystal panel to form a liquid crystal panel integrated screen; the touch control sensing element mounting part is stuck to the periphery of the front surface of the liquid crystal panel protective glass of the liquid crystal panel integrated screen; the liquid crystal panel of the liquid crystal panel integrated screen is not in contact with the infrared frame of the infrared touch control module; an infrared touch control sensing element is mounted in the touch control sensing element mounting part; a direct type backlight module is located on the back surface of the liquid crystal panel integrated screen; every two adjacent films and every two adjacent plates of the direct type backlight module are stuck to the periphery to form an optical film integrated layer, and the optical film integrated layer is stuck to the edge of an opening part of a back plate; no other supporting part is arranged between the direct type backlight module and the liquid crystal panel; the back plate of the direct type backlight module is buckled with the infrared frame extension part.
Owner:OPTON (SHUNCHANG) OPTICS CO LTD

Bicyclic heterocyclic derivatives as mnk1 and mnk2 modulators and uses thereof

ActiveUS20140371199A1Reduced binding affinityStrengthen associationBiocideOrganic chemistryDiseasePyrazine
The present invention relates to certain compounds (e.g., imidazopyrazine, imidazopyridine, imidazopyridazine and imidazpyrimidine compounds) that act as inhibitors of the MAP kinase interacting kinases MNK2a, MNK2b, MNK1a, and MNK1b. The present invention further relates to pharmaceutical compositions comprising these compounds, and to the use of the compounds for the preparation of a medicament for the prophylaxis and treatment of diseases (e.g., proliferative diseases (e.g., cancer), inflammatory diseases, Alzheimer's disease), as well as methods of treating these diseases.
Owner:AGENCY FOR SCI TECH & RES

Anti-blocking PVB (Polyvinyl Butyral) rubber sheet with long-term isolating membrane-free protection at temperature greater than 10 DEG C and preparation method thereof

The invention discloses an anti-blocking PVB (Polyvinyl Butyral) rubber sheet with long-term isolating membrane-free protection at an environmental temperature greater than 10 DEG C and a preparationmethod thereof. Some anti-blocking agents capable of modifying PVB hydroxyls into other groups or increasing steric hindrance among the PVB hydroxyls are screened out, and mainly distributed on the PVB surface by virtue of a novel manufacturing method before, during and after molding of the PVB rubber sheet, intermolecular hydrogen bonding on the surface of the PVB rubber sheet is weakened on a micro level, and mutual adhesion of the PVB rubber sheet is inhibited. Therefore, the anti-blocking PVB rubber sheet has anti-blocking property and can avoid isolating membrane protection at the environmental temperature greater than 10 DEG C. The PVB rubber sheet comprises the following overall components in parts by weight: 0.0001-10 parts of an anti-blocking agent, 0.0001-10 parts of other typesof assistants, 0.0001-2 parts of water, 3-50 parts of a plasticizer and 28-96.9997 parts of resin powder.
Owner:ZHANGJIAGANG ALIEN NEW MATERIAL TECH CO LTD

Ocean source Bacillus barbaricus SCSIO 02429 and method for preparing squid small peptide by using same

The invention relates to ocean source Bacillus barbaricus SCSIO 02429 CCTCC No: M2010213. The invention also relates to a method for preparing squid small peptide, which is characterized by comprising the following steps of: adding the Bacillus barbaricus SCSIO 02429 into an inducing enzyme-production fermentation medium to ferment to obtain a crude enzyme solution for hydrolysis; then, after crashing squid abdominal organs into pulp, and adding the crude enzyme solution to carry out zymolysis to obtain a crude protein zymolyte with a destroyed glycosyl side chain; adding bromelin to carry out zymolysis; standing the obtained zymolyte; separating a crude adipose layer and a water layer; and drying after removing the crude adipose layer to obtain the squid small peptide. In the invention, the squid small peptide yield can reach 40-46 percent, and the amino acid yield can reach 16-22 percent. The squid small peptide has the actions of reducing the mortality rate of young seaculture animal and increasing the percentage of liveweight growth, can replace the traditional protein sources of fish meal, and the like in feed and is used for functional protein sources, additives, and the like of seaculture compound feed.
Owner:SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI

Method and system for unlocking and deleting file and folder

A method and system for unlocking and deleting a file or a folder. The method for unlocking the file or the folder comprises: receiving an unlock request of a file or a folder, wherein the unlock request includes an input parameter; verifying whether the input parameter complies with a preset condition; if the input parameter complies with the preset condition, correcting a deformed path format of the file or the folder and / or the special file name of the file or the special folder name of the folder according to a preset rule; determining whether restrictive setting of the corrected file or folder is present; and if yes, cleaning the restrictive setting of the file or the folder. The embodiments of the present invention relieves layer by layer the protections arranged by files infected with a virus by employing a plurality of means such as removing the read-only lock, removing the routine lock, adding the authority and closing the handle, thereby increasing the confrontation capacity of a security software against a malignant program.
Owner:BEIJING QIHOO TECH CO LTD

Injection molding robot with visual mold monitor

The invention relates to visual detection equipment, in particular to an injection molding robot with a visual mold monitor. The injection molding robot with the visual mold monitor can completely eliminate the serious visual distortion and blind areas of detection and protection of a traditional mold monitor, and has the characteristics of having high detection accuracy, being small and flexible,being capable of moving arbitrarily with a coordinate robot and integrating a mold monitoring protector and product quality visual inspection. The visual monitor is directly arranged on the coordinate robot. After the injection molding machine is opened, the coordinate robot descends to the interior of the mold with the monitor, can move arbitrarily and repeatedly according to detection key partsand takes photos continuously without dead angles or visual distortion; and after the shooting distance is shortened, the image definition generally increases by more than 200%, so that whether residues exist in a product and whether the product is taken out completely can be detected, whether metal and other plug-in components or pins inserted into the mold are installed in place can also be detected, whether the shaped product has quality defects such as incomplete filling, shrinkage, black spots and different colors is detected, the visual distortion is eliminated, the photos taken are clear and complete, and meanwhile the type of visual cameras is not limited.
Owner:SUZHOU IND PARK CHAOQUN AUTOMATION EQUIP

Industrial robot absorbing fixture

The invention provides an industrial robot absorbing fixture. The industrial robot absorbing fixture comprises a first connecting rod, an electromagnetic sucker, a damper, a second connecting rod, a third connecting rod, a damper and a damping spring; a third connecting rod motor connected through a bolt screwing mode is arranged in the third connecting rod; the second connecting rod connected through clearance fit is arranged at the left part of the back side of the third connecting rod; the first connecting rod connected through clearance fit is arranged at the upper part of the front side of the second connecting rod; the damper connected through a bolt screwing mode is arranged at the left end in the first connecting rod; and the electromagnetic sucker connected through a bolt screwingmode is arranged at the lower end of the damper. Through structural improvement and combination with the prior art, the industrial robot absorbing fixture has the advantages of delicate structure, high practicability, capability of eliminating vibration generated in workpiece grabbing and protection of workpieces and a mechanical arm body, solves the problems and the defects in a traditional device, and achieves the purpose of higher practicability.
Owner:十堰市时纬自动化科技有限公司

The disinfectant applied to blood contaminated articles

InactiveCN1943792ARemove barriersRemove protectionChemicalsDisinfectantBiological oxidizer
A kind of disinfectant for blood contaminant can dissolve blood and blood coagulum. The disinfectant is characterized in that it comprises biological oxidants, protease, acidulant, and its various components (as a weight percentage) are: bio-oxidant 1.2 to 2.0; protease 2 to 20; acidulant 5 to 10; the rest is distilled water. The invention can be used to the disinfection of contaminated medical supplies and equipments, it can dissolve blood attached to medical supplies and equipments, including coagulated blood, kill virus mixed in the blood and it is effective, low toxic, low irritation, easy to use, clean and low cost.
Owner:ARMY MEDICAL UNIV

Adjustable cup protection device

The invention discloses an adjustable cup protection device which comprises a base; a longitudinal damping assembly is arranged in the base, annularly-distributed shells are arranged on the base, inclined damping assemblies are arranged in the shells, limiting grooves distributed at equal intervals are formed in the side faces of the shells, and a leather collar is arranged on the limiting groovesin a sleeving mode; two sides of the leather collar are symmetrically arranged with pull rings, connecting holes are sliding connected with guide rods, and a rubber strip is arranged at a part, located between the adjacent shells, of each guide rod. The adjustable cup protection device has the advantages that the adjustable cup protection device is reasonable in integral structural design and convenient to use, different types of cups can be protected, the cups in different shapes can be fixed, and shaking of the cups in use procedures can be prevented; through the arrangement of the longitudinal damping assemblies, vibration in the vertical direction can be eliminated, the cup can be protected even if the cup vertically falls on the ground, damage is avoided, and vibration generated by different inclination angles can be eliminated through the damping assemblies arranged on the inner side of the shells.
Owner:陈站稳

Electrostatic discharge protection device

An electrostatic discharge protection device formed on a substrate. The electrostatic discharge protection device includes a first isolation region formed over the substrate, an active region formed over the substrate and enclosed by the first isolation region, a second isolation region formed on the substrate and substantially surrounded by the active region, a first gate element formed in the active region, the first gate element having a first end extending over the first isolation region and a second end extending over the second isolation region, a drain region formed in the active region at a first side of the first gate element, a source region formed in the active region at a second side of the first gate element, a drain contact for electrically coupling the drain region to a first node, and a source contact for electrically coupling the source region to a second node.
Owner:WINBOND ELECTRONICS CORP

External socket protection cover

InactiveCN105119083AImprove securityImprove safety insurance factorCoupling device detailsLocking mechanismResource saving
The invention discloses an external socket protection cover. The external socket protection cover comprises a protection cover base body, and also comprises a movable cover. The movable cover is movably connected with the protection cover base body. A movable cover self-reset mechanism driving the movable cover to return to an origin position is arranged between the movable cover and the protection cover base body. A movable cover locking mechanism keeping the movable cover in the origin position is arranged on the protection cover base body. The external socket protection cover can raise the socket safety performance greatly, and has advantages of reliable performances, low development investment, simple structure, low manufacturing cost, resource saving, waste reduction, flexible usage mode and the like.
Owner:孙立峰

Locking method for preventing differential protection maloperation of transformer caused by sympathetic inrush current

The invention provides a locking method for preventing differential protection maloperation of a transformer caused by sympathetic inrush current, which belongs to the technical field of electric power automation. The method comprises steps of calculating a three-phase differential current value of a transformer, judging whether a phase difference exists between a second harmonic phase and a double fundamental current phase in the differential current when the transformer generates sympathetic inrush current or not, when it is judged that the phase difference exists between the second harmonic phase in the differential current and the doouble fundamental current phase when the sympathetic inrush current occurs in the transformer, calculating the second harmonic proportion value when the sympathetic inrush current and the fault occur in the transformer, judging whether the second harmonic proportion value is not lower than a proportion coefficient Kd or not, when it is judged that the second harmonic proportion values are all lower than the proportion coefficient Kd, judging whether the current value of the differential current is not lower than a setting value Iset or not, and when judging that the current value of the differential current is lower than the setting value Iset, locking differential protection.
Owner:ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID NINGXIA ELECTRIC POWER COMPANY

Controllable converter electric-arc furnace

The invention provides a controllable converter electric-arc furnace. The controllable converter electric-arc furnace is applied to the technical field of electric-arc furnace control and comprises aphase-shifting transformer, a three-phase converter and an alternating-current electric-arc furnace; the primary side of the phase-shifting transformer is used for being connected with a three-phase power supply, the secondary side of the phase-shifting transformer is connected with the input end of the three-phase converter, and the output end of the three-phase converter is connected with the power supply input end of the alternating-current electric-arc furnace; and the controlled end of the three-phase converter is used for receiving an external driving pulse signal. The controllable converter electric-arc furnace structure can reduce the loss, so that the operation cost is reduced.
Owner:DUNSHI MAGNETIC ENERGY TECH

Gelatin composite embolism microsphere containing nano calcium carbonate, preparation method of gelatin composite embolism microsphere and drug-loaded embolism microsphere

The invention discloses gelatin composite embolism microspheres containing nano calcium carbonate, a preparation method of the gelatin composite embolism microspheres and drug-loaded embolism microspheres. The microspheres comprise the following components in percentage by mass: 10-50% of nano calcium carbonate and 50-90% of gelatin. The gelatin composite microsphere containing the calcium carbonate nanoparticles provided by the invention can efficiently adsorb an anti-tumor chemotherapeutic drug through good water absorption of gelatin and extremely strong negative charge property of the calcium carbonate nanoparticles, and can realize long-time stable release of the drug, thereby playing a long-acting anti-tumor role; in the tumor embolism treatment process, the microspheres can continuously maintain a slightly alkaline environment of tumor tissues for a long time, so that the protective effect of lactic acid on tumor cells is effectively eliminated, and the sensitivity of chemotherapeutic drugs is improved; meanwhile, the embolism microsphere provided by the invention is simple in preparation method, relatively low in cost and good in reproducibility, has good biological safety and degradability, and has a bright application prospect in the field of liver cancer TACE treatment.
Owner:LISHUI CENT HOSPITAL

Integrated sewage harmless equipment

The invention provides integrated sewage harmless equipment, and belongs to the technical field of sewage and sludge treatment. The equipment comprises a flow meter, a valve, an ultrasonic / ultraviolet reaction tank, a flow guide partition plate, an ultraviolet lamp UVC, an overflow water outlet pipe, an emptying port I, an overflow water tank, a secondary treatment water inlet control valve, an ultrasonic / photocatalytic reaction tank, a flow guide partition plate loaded with a photocatalyst, a flow guide partition plate slot, a photocatalytic light source UVA, a water outlet, an emptying port II and an ultrasonic transducer. Under the combined action of ultrasonic waves, ultraviolet rays and photocatalytic reaction, multiple purposes of inactivation of pathogenic microorganisms in sewage, degradation of antibiotics and resistant genes of the antibiotics and the like are achieved, and harmless treatment of the sewage is achieved. The technology can greatly reduce the risk of by-products caused by chemical agent disinfection, is simple to operate, does not need auxiliary equipment and facilities, is safe and efficient, and is especially suitable for harmless treatment of secondary effluent of a sewage treatment plant, biogas slurry and sewage with similar properties.
Owner:UNIV OF SCI & TECH BEIJING

Cleaning agent for automobile three-way catalyst

The invention relates to a cleaning agent for an automobile three-way catalyst. The cleaning agent is prepared from the following raw materials in parts by weight: 10-20 parts of sulfosalicylic acid,10-15 parts of a composite surfactant, 1-5 parts of a builder, 1-5 parts of a composite corrosion inhibitor, 0.5-1 part of a chelating agent and 60-90 parts of deionized water. Glue and carbon depositof the oil nozzle can be effectively cleaned and dredged, cleanliness of a fuel oil system is guaranteed, fuel oil is saved, and therefore the oxygen sensor and the three-way catalytic conversion device are effectively protected, carbon deposit of the valve seat can be eliminated, the valve and the valve guide pipe can be lubricated, sealing is improved, and power is improved.
Owner:安徽省玉环清洗设备制造有限公司

Combination method of microcomputer protection device and input protection device and output protection device

The invention relates to a combination method of a microcomputer protection device, an input protection device and an exit protection device. According to the combination method, when part of plug-ins in an original microcomputer relay protection device of one manufacturing plant in a power supply system are damaged, a new microcomputer relay protection device of the other manufacturing plant is switched in to compensate functions of the damaged plug-ins of the original microcomputer relay protection device. According to the input protection device, the new microcomputer relay protection device of the other manufacturing plant is connected in series into the original microcomputer relay protection device of one manufacturing plant in the power supply system to compensate the functions of the damaged plug-ins of the original microcomputer relay protection device. According to the exit protection device, two trip contacts of the original microcomputer relay protection device are connected in parallel with a trip contact of the new microcomputer relay protection device of the other manufacturing plant. The combination method of the microcomputer protection device solves the difficult problem that when part of the plug-ins of the original microcomputer relay protection device are damaged, no accessories are provided. The input protection device and the exit protection device are two devices with good effects, which are used for implementing the combination method of the microcomputer protection device.
Owner:SHANXI TAIGANG STAINLESS STEEL CO LTD

Crosslinking self-emulsifying cation full fluorine copolymer soap-free emulsion and preparation thereof

The invention belongs to the polymer chemistry field, in particular to a cross-linking self-emulsifying cationic perfluorocopolymer soap-free emulsion and a preparation method thereof. The soap-free emulsion overcomes the problems of the prior art such as poor film forming property, low conversion rate of fluoride monomer, and adverse impact on water resistance and oil resistance of fluorine-containing emulsion products and environmental protection. The technical proposal is as follows: the cross-linking self-emulsifying cationic perfluorocopolymer soap-free emulsion is prepared by the following method: (1) preparing a monomer pre-emulsion mixture: mixing a cationic monomer with vinyl monomer, perfluoroalkyl (methyl) acrylate and a functional monomer to obtain a mixture solution A; and then mixing the mixture solution A with an oil soluble initiator to obtain a mixture solution B, pre-emulsifying and evenly mixing the mixture solution B by ultrasonic agitation or mechanical agitation;(2) preparing a water soluble perfluoroalkyl acrylate prepolymer; and (3) preparing the perfluoroacrylate copolymer soap-free emulsion. The cross-linking self-emulsifying cationic perfluorocopolymer soap-free emulsion has the advantages of good stability, good film forming property of film coating, high conversion rate of the fluoride monomer, safety and environmental protection.
Owner:SHAANXI UNIV OF SCI & TECH

Smart liquid for stripping photoresist

The present invention relates to a novel cleaning agent based on a multiphase system, the use of the cleaning agent for removing photoresist coatings from surfaces, and a method for removing photoresist coatings from surfaces. According to the invention, the multiphase system is particularly suitable for removing coatings, photoresist coatings, polymer layers, dirt layers, insulating layers and metal layers from surfaces.
Owner:智能液体有限公司

Method for preparing polyurethane surface sizing agent

The invention discloses a method for preparing a novel polyurethane surface sizing agent. Diisocyanate and polyglycol are first uniformly blended and then added with a moderate amount of catalyst to react, so that polyurethane prepolymer is obtained; hydrophilic chain extender is then added to react with the polyurethane prepolymer; the temperature is reduced, organic base is added to regulate tothe pH value, deionized water is added under high-speed shearing, and after emulsification, polyurethane emulsion is obtained; and the temperature is increased, vinyl monomer is added in the polyurethane emulsion, and initiator is used to initiate polymerization, so that the modified aqueous polyurethane emulsion surface sizing agent is prepared. The invention can completely eliminate the adverseaffection of small-molecular emulsifier and organic solvent on the application performance of sizing agent product and environment protection, and replaces internal sizing.
Owner:SHAANXI UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products