108results about How to "Limitation of scope of protection" patented technology

The invention relates to a method for preparing a load N-doped nano TiO2 visible light photocatalyst by using natural porous mineral attapulgite as a carrier, belonging to the technical field of mineral material processing and photocatalysis. The method comprises the following steps of: adding water and hydrochloric acid to calcined and purified attapulgite mineral powder, stirring and pulping the attapulgite mineral powder, and then adding a TiCl4 solution and a (NH4)2SO4 solution; adding an ammonia water solution to regulate pH and carrying out hydrolyzing and precipitating load and N-doped reaction by using NH4+ as a nitrogen source; and filtering, washing, drying and calcining a reaction product to obtain the nitrogen-doped attapulgite load nano TiO2 visible light photocatalyst. The prepared N-doped attapulgite load nano TiO2 visible light photocatalyst reduces the forbidden band width of TiO2 to below 2.8 eV from 3.0-3.2 eV and can obviously improve the photocatalysis performance of the nano TiO2 under visible light; and the degradation rate of the catalyst for formaldehyde within 8 h under the visible light reaches above 90%.

A kind of preparation method of microspherical Fischer-Tropsch synthesis catalyst, mix ferric nitrate or ferric sulfate solution with lanthanum nitrate and copper nitrate or copper sulfate mixed solution, then add precipitating agent sodium carbonate or ammonia solution, the obtained iron-containing lanthanum copper After the precipitation slurry is washed and filtered to obtain a co-precipitation filter cake, the potassium silicate water glass solution is directly added to the wet slurry containing iron, lanthanum and copper, and the slurry is beaten and mixed evenly to obtain a catalyst slurry, which is then spray-dried and roasted to obtain a catalyst slurry. Spherical slurry bed Fischer-Tropsch synthesis iron-based catalyst. The invention simplifies the technological process, and the spray drying method has the characteristics of large processing capacity, low energy consumption, rapid catalyst formation, suitable for industrial continuous large-scale production and the like.

The invention provides light-cured organic silicon resin. The light-cured organic silicon resin is prepared by performing cohydrolysis-polycondensation reaction on at least one of siloxane containingalkyl and siloxane containing aryl as well as siloxane containing epoxy group and siloxane containing unsaturated double bond under the action of a catalyst. Epoxy functional group and unsaturated double bond group in the light-cured organic silicon resin, serving as special functional groups, improve the curing property of organic silicon resin, improve the curing rate, reduce molding volume shrinking percentage and warping degree, and have important application in the fields of aviation, electronic engineering, light industry, mechanical engineering, chemical engineering and medicine.

A molecular marker primer for identifying Shao's Sillago and Sillago sihama belongs to the technical field of biology, and sequences of the primer include L5979: 5'-TTTAGTATTCGGAGCCTGAG-3' and H6241: 5'-CCTCAACACCTGATGAGGCC-3'. The invention also provides a method for identifying Shao's Sillago and Sillago sihama by using the primer, comprising the steps of extracting DNA from Shao's Sillago and Sillago sihama, using DNAs of the two species as templates to perform PCR (polymerase chain reaction) amplification, purifying and sequencing amplification results, and comparing sequencing results to determine that intraspecific genetic difference is not greater than 1%; molecular marker sequence of Shao's Sillago is SEQ NO. 3 and molecular marker sequence of Sillago sihama is SEQ NO. 4; the method of the invention helps solve the problem of germplasm mixing of Sillago fishes, and is simple to perform, easy to master and high in accuracy.

The invention provides a black light shielding adhesive tape and a preparation method thereof. The black light shielding adhesive tape consists of a PET (Polyethylene Terephthalate) base layer, an inklayer, a first adhesive layer, a second adhesive layer and a protection layer. The black light shielding adhesive tape is simple in preparation process, easy to operate and applicable to industrial production; secondly, the ink layer is made of environmental-friendly aqueous black ink, a nano Al/Al2O3 core-shell material light absorbent is capable of effectively absorbing light fed into the ink layer, a screen display effect can be effectively improved, and the problem that the edge of a screen is bright while a backlight source is fed into the screen from a transparent adhesive layer can besolved. Therefore, the black light shielding adhesive tape provided by the invention has the characteristics of being long in service life, environmentally friendly, good in adhesion, good in light shielding property, easy to repair and good in high temperature resistance; in addition, the first adhesive layer optimally comprises nano silicon dioxide, so that the adhesive tape has a convex-concavesurface and has a small contact area with a display panel, the display panel is not damaged or a backlight module is disassembled when being dismounted, convenience in dismounting can be achieved, and high rework efficiency can be achieved.

The invention provides albumin hydrogel. The albumin hydrogel is prepared by mixing albumin, a cross-linking agent and a solvent, the cross-linking agent comprises a repeating unit having a structureof formula (I) and an end group having a structure of formula (II). The invention develops the albumin hydrogel which is rapid in crosslinking, low in gelatinization concentrating and free of biotoxicity, and the albumin hydrogel is applied to the fields of cell culture, tissue engineering and drug delivery. Besides, as a good paclitaxel topical treatment drug carrier, the albumin hydrogel overcomes the defect of poor paclitaxel solubility, polyoxyethylene castor oil with biotoxicity is not introduced, and compared with a systemic preparation, the albumin hydrogel has the advantages that the administration frequency is effectively reduced, the drug concentration at a tumor is increased, and the systemic toxicity is reduced. Nanoparticles wrapping paclitaxel are used as gel forming components of the gel, so that uniform distribution of the paclitaxel in the gel can be realized, and stable and continuous release is realized.

The invention provides a preparation method of degradable polyolefin, which has the advantages of a controllable number of degradation units and a high monomer utilization ratio, and comprises the following steps of dissolving cycloketene acetal, a radical initiator and a chain transfer reagent in a solvent, and reacting with olefin or olefin derivatives to obtain the degradable polyolefin material. Cycloketene acetal and polyolefin are copolymerized in a random manner through RAFT polymerization of cycloketene acetal and olefin, and ester bonds are introduced to all polyolefin carbon skeletons. The number of degradable units (ester bonds) introduced in the mode is controllable, the monomer utilization rate is high, the production cost can be effectively reduced, and degradation of polyolefin is controlled.

The invention relates to a method for preparing a fluidized bed cobalt-based Fisher-Tropsch synthesis catalyst, which mainly solves the problem of complex catalyst preparation process in the prior art. For solving the problem, the invention adopts the technical scheme that: in the catalyst, Co is used as a main active ingredient, alkali metal and rare-earth metal La or Ce are used as cocatalysts,and a mixture of SiO2 or Al2O3 and ZrO2 is used as a carrier; and the method comprises the following steps of: mixing salt solution of the main catalyst and the cocatalysts and the sol solution of the carrier to obtain catalyst slurry containing 10 to 50 weight percent of solid, adjusting the pH value of the slurry to between 0.1 and 7 by using acid or alkali, performing spray drying molding on the slurry, and baking the molded product to obtain the catalyst. The method is applied in industrial preparation of the fluidized bed cobalt-based Fisher-Tropsch synthesis catalyst.

The invention provides a preparation method of a lamellar ZSM-5 catalyst. Under the action of double template agents, a lamellar ZSM-5 molecular sieve is controllably synthesized by utilizing a function of each template agent. The two template agents have the respective functions: the template agent A is used for synthesizing a lamellar ultrathin molecular sieve, and the template agent B is used for growing the conventional ZSM-5 molecular sieve on the basis of the lamellar molecular sieve. The molecular sieve is characterized by being capable of adjusting and controlling the layer thickness and the Si/Al molar ratio of the lamella ZSM-5 catalyst through controlling the compositional ratio of various raw materials in a precursor solution; the synthesized molecular catalyst has high aromatic hydrocarbon selectivity and carbon deposition resistance on a B acid site, and has high catalytic stability.

The invention provides a method for producing an aromatic hydrocarbon solvent having wide distilling range, low chromaticity and high boiling point. The production method of the aromatic hydrocarbon solvent having wide distilling range, low chromaticity and high boiling point of the invention includes the steps of guiding a C9+ fraction raw material into a first rectification column for rectifyingand removing a light component, then separating a first solvent product from a second solvent crude product through a second rectification column, and finally separating a second solvent product froma colored heavy component by a third rectification column; meanwhile, precisely controlling the rectification operating pressure, temperature and reflux ratio of each distillation column, which can greatly widen the distilling range of a first aromatic hydrocarbon solvent obtained, and can also effectively ensure the chromaticity of a second aromatic hydrocarbon solvent; each step performed is arectification step, no waste is discharged, and the process is environmentally friendly and non-polluting.

The invention discloses a method for improving anti-caking property of phosphorus-potassium nitrate fertilizer and belongs to the technical field of chemical fertilizer preparation. The method comprises the following steps: (1) sieving ammonium nitrate phosphate (ANP) by carrying out a briquetting experiment; (2) sieving the ANP by carrying out a bag throwing experiment; (3) adding granular or powdery ammonium nitrate phosphate according with the steps (1) and (2) at the same time and potassium sulfate or potassium chloride into a rotary drum granulator by virtue of a metering system, so that a solid-phase material is obtained; (4) fully mixing liquid raw materials, namely sulfuric acid, phosphorus pentoxide and liquid ammonia, in a tubular reactor, so that a liquid phase material is obtained, and spraying into the solid material in the step (3), and (5) drying, screening, cooling and packaging, so that a nitryl high-concentration granular compound fertilizer is obtained. The method disclosed by the invention has the characteristics that the raw materials are screened, the ANP with better anti-caking property is selected and used for producing high-nitrogen fertilizer, cost is not increased, equipment does not need to be added during implementation and the original production technology cannot be changed, and the aim of improving the anti-caking property of the compound fertilizer can be achieved by only controlling mass of the ANP.

The invention provides a non-toxic marine ship antifouling coating material, which is prepared from the following raw materials in parts by mass: 100 parts of organic silicon resin, 1 to 3 parts of achitosan quaternary ammonium salt, 5 to 10 parts of fly ash nanoparticles, 0.5 to 1 part of a coupling agent, 3-5 parts of a curing agent, 0.01 to 0.1 part of a catalyst, 0.2 to 0.5 part of an antifoaming agent, and 0.2 to 0.5 part of a leveling agent. According to the invention, organic silicon resin is used as a matrix, nano fly ash is used as a carrier, and a chitosan quaternary ammonium salt loaded on the surface is used as a main antifouling agent, wherein the chitosan quaternary ammonium salt has good solubility and antibacterial property, has biocompatibility, and is safe and non-toxic,the fly ash nanoparticles have strong alkalinity, and the organic silicon is also a low surface energy material; by using a hydrophilic chitosan quaternary ammonium salt as a main antibacterial material, so that the use of a large amount of organic solvents is avoided, the cost is low, and less waste liquid is generated; and fly ash nanoparticles are activated to promote the self-polymerization of organic silicon resin molecules to form a layered structure with certain orientation so as to enhance the strength and elastic modulus of the coating material.

The invention provides a mobile phone protection film preparation method. A mobile phone protection film is prepared by the steps of melting and extruding a polyester base material and functional master batch, curtain coating and casting pieces, stretching and shaping, performing thermal treatment and tailoring. The mobile phone protection film preparation method has the advantages of simple preparation technology, easiness in operation and suitability for industrial production. Graphene and modified zinc oxide are coated by polyaniline, so that dispersity of the graphene and the modified zincoxide is effectively improved, the compatibility of the graphene and the modified zinc oxide with a polyester matrix is enhanced, the combination area of the graphene and the modified zinc oxide withthe polyester matrix is enlarged, the graphene and the modified zinc oxide are cooperated with the polyaniline to further improve an antistatic effect of the mobile phone protection film. In addition, the modified zinc oxide and the graphene have a synergistic effect and are added into a polyester system to form a stress concentration point, so that cracks generated on the matrix can be preventedfrom expanding and can be passivated; finally, the cracks are terminated and are prevented from generating destructive cracks, and mechanical property and wear resistance of the antistatic mobile phone protection film are improved; thus, the service life of the mobile phone protection film is prolonged.