62results about How to "The synthesis process is mature" patented technology

The invention relates to a self-repairing polyurethane hydrogel and a preparation method thereof. The polyurethane hydrogel comprises the following components in parts by mass: 10-30 parts of polyisocyanate, 30-50 parts of hydrophilic polyester polyol or hydrophilic polyether polyol, 10-50 parts of acrylamide monomer, 0.5-3 parts of chain extender, 3-10 parts of methacrylic acid functional monomer containing an UPy unit, 0.5-2 parts of catalyst and 0.5-3 parts of photoinitiator. The preparation method comprises the following steps of firstly preparing a hydrophilic polyurethane macromonomer terminated with an acrylic acid monomer and carrying out radical polymerization with the methacrylic acid functional monomer containing the UPy unit under the action of photo-initiation. According to the self-repairing polyurethane hydrogel, the self-repairing of the damage of the polyurethane hydrogel can be completed without need of any repairing agent or specific environmental requirements, the polyurethane hydrogel has the advantages of high repairing efficiency, high mechanical strength and low cost and the repeatedly repairing function can be achieved on the same site.

The invention discloses a high-resilience self-repair high-polymer aquagel and a preparation method thereof. The high-resilience self-repair high-polymer aquagel is prepared from the following raw materials in parts by mass: 15-20 parts of polyisocyanate, 40-75 parts of hydrophilic polyester polyol or hydrophilic polyether glycol, 1-5 parts of acrylate monomer, 10-15 parts of acrylamide monomer, 0.5-2 parts of chain extender, 1-3 parts of surfactant, 0.1-1 part of alkyl acrylate monomer and 0.5-2 parts of catalyst. The preparation method comprises the following steps: preparing an acrylate-monomer-terminated hydrophilic polyurethane high-polymer monomer self-assembly and an alkyl acrylate micelle; and carrying out radical copolymerization with acrylamide monomer under the photoinitiation action. The obtained self-repair high-polymer aquagel can complete self repair on self damage without any repair agent or specific environment, and has excellent resilience and physical and mechanical properties.

The invention provides a heavy metal cadmium, lead and arsenic compound contaminated soil restorative agent. The heavy metal cadmium, lead and arsenic compound contaminated soil restorative agent is prepared from the following components in percentage by weight: 30-50 percent of biomass charcoal, 5-10 percent of diatomite, 5-10 percent of sodium bentonite, 5-10 percent of activated aluminum oxide, 10-20 percent of dithiocar-bamate, 5-10 percent of ethylenediaminetetraacetic acid, 5-10 percent of tartaric acid, 5-10 percent of polyacrylamide and 5-10 percent of sodium dodecyl sulfate. A preparation method for the heavy metal cadmium, lead and arsenic compound contaminated soil restorative agent comprises the following steps: mixing the biomass charcoal, diatomite, sodium bentonite, activated aluminum oxide, ethylenediaminetetraacetic acid, tartaric acid, polyacrylamide and sodium dodecyl sulfate in mass proportion to obtain a mixture; and adding the dithiocar-bamate into the mixture in corresponding mass proportion to sufficiently mix uniformly, thereby obtaining the prepared soil restorative agent. The prepared soil restorative agent has good effect in restoring the cadmium, lead and arsenic compound contaminated soil.

The invention relates to a micro-irrigation permeating tube and a manufacturing method thereof. The micro-irrigation permeating tube comprises a capillary permeating tube (1) made of materials having a capillary permeating function is provided with hydrophilic inorganic fillers and a three-dimensional network capillary water seepage structure of thermoplastic plastics, and has unpowered, self-adaptive, continuous and balanced permeation functions, so that water can automatically permeates outward through a tubing or stops permeating outward according to water level of soil contacted with the capillary permeating tube. The capillary permeating tube further comprises a gel protective layer (4), high water retention tree powder is thrown into gaps of non-woven fabric and absorbs water to swell to form the gel protective layer. The tubing having good water permeating capacity can resist blockage, bacteria and prevent rats; by the adoption of the micro-irrigation permeating tube assisted by other irrigation components, an unpowered, self-adaptive, continuous and balanced permeating system which is applicable to the field of water-saving micro-irrigation is formed.

The invention relates to an air cleaning agent and a preparation method thereof, and belongs to the technical field of environmental protection. The air cleaning agent comprises a globular carrier and a reactive metal or reactive metal oxide, wherein the globular carrier is a flower-ball-shaped rare-earth oxide, the globular carrier is composed of sheet petals by interweaving, and the reactive metal or reactive metal oxide is attached on the petal gaps of the globular carrier and the outer-layer petals. The air cleaning agent provided by the invention has the advantages that the air cleaning effect under the normal temperature is greatly improved, the air cleaning agent has the good catalytic activity, and the air cleaning speed is greatly improved; compared with the existing catalyst, the service life of the air cleaning agent is prolonged more than ten times, the air cleaning cost is reduced, and the air cleaning agent has the good antibacterial effect and has the good killing action on the common germs and viruses; the technology of the preparation method is mature, the technology and the operation are easy to control, the distribution of a microstructure of the cleaning agent is uniform, and the productive rate is more than 80%.

The invention relates to a seeping micro-irrigation container and a preparation method thereof. The container is made of a micro-irrigation material with a capillary water seeping function, has a three-dimensional network capillary water seeping structure of inorganic particles and thermoplastic plastics, and has a power-free self-adaptation, continuous and balanced seeping function. According to water potential of soil contacted with the container, water can seep outwards automatically through the capillary network structure inside the container or stop seeping outwards. The container further comprises a gel protective layer (11). The container has good water seeping capacity, can prevent blocking, bacteria and rats, can be used as a mini reservoir independently, can also be connected with a pipeline system, and forms a power-free self-adaptation, continuous and balanced seeping micro-irrigation system.

The invention relates to a micro-irrigation system, a manufacturing method and an application of the micro-irrigation system. An irrigation element of an irrigation section of the micro-irrigation system is an unpowered self-adapting, lasting and balanced infiltrating micro-irrigation pipe or container; the irrigation element comprises a capillary infiltration layer (11) with a three-dimensional mesh structure; and the capillary infiltration layer is made from a capillary infiltrating micro-irrigation material with the three-dimensional mesh structure, and the micro-irrigation element is further coated with a gel protective layer (13). The micro-irrigation system has a composite infiltration structure, and the water can automatically permeate outwards or stop permeating outwards through the infiltrating micro-irrigation element according to the water potential height of the soil contacting the water. The system has the functions of resisting blockage and bacterium and can prevent a mouse, can be widely applied to the field of water-saving micro-irrigation and applied to a desert to play the roles of stabilizing sand and improving the desert, and can be applied to saline and alkaline lands to play the roles of holding down salt and alkali and transforming the saline and alkaline lands.

The invention provides a method for preparing side-chain amylose with different carbamates and a chiral stationary phase. The method comprises the following steps of: carrying out vacuum drying on amylose, carrying out stirring reflux in anhydrous N,N-dimethyl acetamide, cooling to room temperature, then, adding lithium chloride, reheating, adding anhydrous pyridine, refluxing, then, adding superfluous triphenylchloromethane, and carrying out continuous stirring reflux; after vacuum drying, carrying out refluxing in the anhydrous pyridine, then, adding superfluous phenyl isocyanate, stopping reaction, completely washing by using methanol, and carrying out vacuum drying; dissolving into tetrahydrofuran solution containing hydrochloric acid so as to carry out hydrolysis; and fully dissolving into the anhydrous pyridine, adding superfluous cyclohexyl isocyanate, stopping reaction, adding methanol, and carrying out vacuum drying, thereby obtaining the side-chain amylose with the carbamates. According to the method, the adopted amylose is wide in source, is cheap and is easily available, and a synthesis process is simple, mature, easy to control and high in yield. The method can be applied to large-scale batch production.

The invention relates to polyasparagines ester and a synthesis method thereof, as well as a polyurea coating and a polyurethane coating prepped from the novel compound. A secondary-amino compound is characterized in that the structural formula is as shown in the specification, in the structural formula, R2, R5 and R6 are alkyl with different carbon atom numbers; R3 and R4 are respectively alkyl, aryl or hydrogen; X is alkyl, alkylene, phenyl or arylidene. According to the invention, the rapid curing speed of a coating at normal temperature is ensured, and the curing speed can be effectively controlled according to practical demands, so that the construction quality is ensured.

The invention provides a star-shaped isoprene-styrene copolymer containing a random transition section and a preparation method thereof. The star-shaped isoprene-styrene copolymer is characterized in that the structural formula is [I1-S1-I2/S2]n-Y,], wherein Y is Si or Sn, n is a branching degree, n is more than or equal to 2.5 and less than or equal to 4, and I1-S1 is a transition section copolymer of polystyrene and polyisoprene; I2/S2 is a random section copolymer of the polystyrene and the polyisoprene, the mass fractions of transition sections of the polystyrene and the polyisoprene are 40-75wt%, and the mass fractions of random sections of the polystyrene and the polyisoprene are 25-60wt%. High styrene rubber disclosed by the invention has the characteristics of high hardness and good intensity and elasticity; when the high styrene rubber is used simultaneously with multiple synthetic rubber or natural rubber, the properties of rigidity, hardness, wearing resistance, tear resistance, dielectricity and the like of rubber products can be improved, and the high styrene rubber can be widely applied to the rubber processing fields of tires, tapes, rubber tubes, rubber overshoes and the like and other industries and can be further used for modifying synthetic plastics.

The invention discloses application of gentiopicroside and a gentiopicroside preparation, particularly discloses non-treatment application of the gentiopicroside serving as a calcineurin (CAN)-NF-AT pathway blocker and application of the gentiopicroside to preparation of the calcineurin (CAN)-NF-AT pathway blocker, and further discloses application of the gentiopicroside to preparation of an external preparation or daily chemical product for preventing or treating skin hypersensitivity inflammatory reaction. The gentiopicroside stemming from dried roots and rhizomes of Gentiana lutea is capable of blocking a CAN-NF-AT pathway to effectively prevent or treat skin allergy symptoms such as eczema and contact dermatitis caused by excessive immune response and can be prepared into various daily chemical products or external preparations. A gentiopicroside synthetic process used herein is mature, preparation cost is low, popularization and application are benefited, and accordingly the gentiopicroside is promising in application prospect.

The invention discloses a fluorinated modified chitosan derivative used as a drug carrier. The structure is shown in the specification. The fluorine-containing compound is covalently connected to a chitosan main chain; the molecular weight of the chitosan ranges from 5000 to 5000000, wherein the fluorine-containing compound is a fluorine-containing aliphatic chain represented by the following chemical formula (I) or an aromatic ring functional group represented by the following chemical formula (II), and R1 is halogen (fluorine, chlorine, bromine and iodine), halogen-substituted alkane, cycloalkane, aldehyde group, carboxyl group, double bond, acetylene bond, hydroxyl group, sulfonyl chloride, sulfonic acid bond or sulfydryl and other active groups capable of reacting with primary amino group. The invention aims to provide a novel drug carrier material which is obvious in drug absorption promoting effect and low in toxicity. The chitosan modified by the fluorine-containing compound hasthe advantages of mature synthesis process, simplicity and easiness in operation, high synthesis efficiency and short period, a high-yield drug carrier can be obtained without complicated purification steps, and a good commercialized foundation is provided for the fluorinated modified chitosan derivative by a simple synthesis method.

The invention discloses a method for manufacturing toilet soap by virtue of chlorella residues produced after the extraction of algae oil, and belongs to a daily chemical. The chlorella toilet soap is made from coconut oil, palm oil, olive oil, sodium hydroxide, dodecyl betaine, sodium dodecylbenzene sulfonate, aloe, pearl powder, green tea and chlorella, and has the effects of decontamination, skin care, beautification and sterilization. The chlorella residues produced after the extraction of the algae oil are used for manufacturing the toilet soap as raw materials, so that the problem of chlorella residue treatment after the extraction of the algae oil is solved, resources are fully utilized, troubles in the wall breaking of fresh chlorella are avoided, and the cost is lowered; meanwhile, walls of chlorella cells are further broken by heating stirring in a toilet soap manufacturing process, so that oil and other active ingredients, which are incompletely extracted, in the chlorella cells can be fully released.

The invention relates to a strontium extracting method. N,N'-di-p-tolylpyridine-2,6-dicarboxamide is synthesized to be used as an extraction agent to extract the strontium in a solution, and an organic phase is extracted. The strontium extracting method is characterized in that in the back extraction process of the strontium in the organic phase, water is used as a back extraction agent, the waterphase is extracted finally, and then the strontium is obtained. On one hand, the extraction agent prepared in the strontium extracting method is pure, free of phosphorus and other secondary pollutants, good in extraction effect and mature in synthesis technology; on the other hand, since deionized water is used as the back extraction agent, the raw material is easy to obtain, operation is easy, cost is low, the back extraction effect is good, and simple, rapid, efficient selective separation of the target Sr ions can be achieved.

The invention discloses an application of a fluorine-containing compound modified cationic polymer in preparation of transmucosal administration of drugs. The polymer comprises a transmucosal preparation component (a), wherein the component (a) is a cationic polymer modified by a fluorine-containing compound; the cationic polymer modified by the fluorine-containing compound is fluorinated chitosan; the fluorine-containing compound is covalently connected to a main chain of the chitosan, the molecular weight range of the chitosan is 1000-5000000, the degree of deacetylation of the chitosan is not less than 55%, the viscosity range of the chitosan is 25-1000 centipoises, and the mucosas comprise nasal mucosa, lung mucosa, vaginal mucosa, oral mucosa and gastrointestinal mucosa. The fluorine-containing compound modified cationic polymer, especially the fluorinated chitosan, provided by the invention has the advantages that the fluorine-containing compound modified cationic polymer can beuniversally combined with various medicines, the medicine absorption is promoted, the bioavailability of the medicines is improved, and the toxicity is reduced.

The invention discloses a super-resolution microscope system of small-size plasma nano-particle detection. The super-resolution microscope system is mainly composed of a first laser, a filtering unit,a first silver reflector, a phase plate, a polarization-dependent beam splitter, a third laser, a dichroscope, a semi-reflective and semi-transparent glass slide, a galvanometer unit, a microobjective, a displacement platform, a second silver reflector, an optical filter, a first pinhole, a photomultiplier, a lock-in amplifier and a terminal, wherein the Gaussian suppression light generated by the first laser is input to the filtering unit, and the Gaussian suppression light is input to the first silver reflector and the phase plate after passing through the filtering unit, and the Gaussian suppression light generate annular suppression light through the phase plate; and the lock-in amplifier controls the second laser to generates Gaussian modulated light. The super-resolution microscopesystem disclosed by the invention has the properties of low suppression power, ultra high resolution, no photobleaching, high signal contrast ratio, extremely high reproducibility and long-lasting observation, and can realize the microimaging of small-size plasma nano-particles in a complex biological environment.

The invention discloses an application of fluorine-containing compound modified cationic polymer in preparation of vaccine drugs. The cationic polymer comprises a transdermal vaccine vector (a), wherein the transdermal vaccine vector (a) is a cationic polymer modified by a fluorine-containing compound; the cationic polymer modified by the fluorine-containing compound is fluorinated chitosan; a fluorine-containing compound is covalently connected to a main chain of chitosan, the molecular weight range of the chitosan is 1000-5000000, the deacetylation degree of the chitosan is not less than 55%, the viscosity range of the chitosan is 25-1000 centipoises, and the transdermal vaccine carrier has three antigen permeation paths including intracellular permeation, intercellular permeation and hair follicle permeation. Fluorinated chitosan is a very good immunologic adjuvant, can non-specifically stimulate an immune system, can effectively induce cytotoxic macrophages and cell-mediated immuneand circulating antibody formation, and amplifies immune response. The biocompatibility is good, and the huge commercial value is realized.

The invention discloses a transdermal delivery preparation. The transdermal preparation comprises a transdermal preparation component (a), wherein the component (a) is a cationic polymer modified by afluorine-containing compound; the cationic polymer modified by the fluorine-containing compound is fluorinated chitosan, the fluorine-containing compound is covalently connected to a main chain of the chitosan, the molecular weight range of the chitosan is 1000-5000000, the deacetylation degree of the chitosan is not less than 55%, and the viscosity range of the chitosan is 25-1000 centipoises. The cationic polymer modified by the fluorine-containing compound has the advantages of being capable of being universally combined with various medicines, promoting medicine absorption, improving thebioavailability of the medicines and reducing toxicity, good in effect, very wide in application and huge in commercial value, and the cationic polymer modified by the fluorine-containing compound iseasy to produce and has a commercial foundation.