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34results about How to "Strong molecular weight" patented technology
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Strong-hydrophobic porous carbon nanofiber and preparation method thereof
ActiveCN103422194AEasy to prepare and effectiveLow surface oxygen contentMonocomponent synthetic polymer artificial filamentArtifical filament manufactureFiberCarbon fibers
The invention relates to strong-hydrophobic porous carbon nanofiber and a preparation method thereof, and belongs to the technical field of porous carbon fiber. The preparation method comprises the following steps: adding thermosetting phenol resin and high molecular weight linear polymers into organic solvent with two proportions to be mixed until the thermosetting phenol resin and the high molecular weight linear polymers are fully dissolved, performing electrostatic spinning on the solution to form phenolic resin fiber, and carrying out curing and carbonizing to obtain the hydrophobic porous carbon nanofiber. The porous carbon nanofiber and the preparation method have the advantages as follows: the diameter, the pore structure and the hydrophobicity of the fiber can be adjusted and controlled through the change of the proportions of the solvent, the prepared carbon nanofiber has good flexibility, a developed pore structure and strong hydrophobicity, and is more conductive to practical application.
Owner:TSINGHUA UNIV
Gaseous-phase in-situ polymerization method for preparing ultra-high molecular weight polyethylene graphene composite material
The invention discloses a gaseous-phase in-situ polymerization method for preparing an ultra-high molecular weight polyethylene graphene composite material. The method comprises the following steps of: reacting graphene which serves as a catalyst carrier with a transition metal compound to prepare a solid catalyst under a certain conditions, and reacting to prepare the ultra-high molecular weight polyethylene graphene composite material under the gaseous-phase conditions without a diluent. Graphene serves as the catalyst carrier and a reinforcing filler and is reacted under the gaseous-phase conditions, so that the polymerization activity can be improved through catalyst loading; and graphene in the composite material is uniformly dispersed, so that the composite material has excellent performance and particularly high impact resistance, and the problems that the traditional composite material is subjected to brittle rupture and is ineffective in long-term use process are solved.
Owner:HENAN UNIV OF SCI & TECH
Antioxidant peptide sourced from limnonectes fragilis as well as gene and application thereof
ActiveCN103613645ASmall molecular weightSimple structureCosmetic preparationsPeptide/protein ingredientsDrugPeptide
The invention relates to antioxidant peptide sourced from limnonectes fragilis as well as a gene and an application thereof and belongs to the technical field of biomedicine. The primary structural sequences of three antioxidant peptides Fragilin-A1, Fragilin-B2 and Odorranain-Q-Lf which are sourced from the limnonectes fragilis, have the encoding genes obtained through a gene clone way, are obtained through a chemical synthesis method and respectively contain 15 amino acid residues, 12 amino acid residues and 21 amino acid residues; the molecular weight of each of the three antioxidant peptides is respectively 1720.95Da, 1464.66Da and 2597.18Da; an isoelectric point of each of the three antioxidant peptides is respectively 8.04, 8.75 and 9.53. The three antioxidant peptides are strong in antioxidant activity, small in molecular weight, simple in structure, low in hemolytic activity and simple in preparation method. When the antioxidant peptide is applied to antioxidant medicines, foods or cosmetic additives, the antioxidant effect of the medicines, the foods or the cosmetic additives can be improved, and the application prospect is promising.
Owner:DALIAN UNIV OF TECH
Nano microsphere preparation used for chemotherapy of tumors and preparation method thereof
InactiveCN101732258AHigh drug loadingGood stabilityOrganic active ingredientsGranular deliveryPancreas CarcinomaSide effect
The invention belongs to the technical field of the pharmacy of medicine, which relates to a gemcitabine-albumin nano microsphere preparation used for the chemotherapy of the tumors of pancreatic cancer and the like and a preparation method thereof. The invention uses an ethanol precipitation-glutaric dialdehyde crosslinking denaturation method to prepare a slow-release gemcitabine biodegradable albumin nano microsphere. By animal experiments, the result confirms that the invention can obviously enhance the slow-release property and the tissue retention property of the medicine, enhances the concentration of gemcitabine in tumors and other target organs effectively, prolongs the effective acting time of the gemcitabine and reduces the side effect of the medicine. The nano microsphere can be used for the chemotherapy and the interventional chemotherapy of pancreatic cancer and non-small cell lung cancer and is suitable for the venous chemotherapy, the arterial interventional treatment, the local tumor injection interstitial chemotherapy, the celiac chemotherapy and the oral chemotherapy of tumor patients with gemcitabine adaptive diseases.
Owner:AFFILIATED HUSN HOSPITAL OF FUDAN UNIV
Preparation method of red mud sinking agent
ActiveCN101735376AUniform temperature riseGood solubilitySludge treatment by de-watering/drying/thickeningIonUrea
The invention relates to a preparation method of a red mud sinking agent, which comprises the following steps of mixing acrylamide, acrylic acid and urea with deionized water in weight percent, cooling and regulating the pH value to end the material preparation; mixing the ingredients, chelating agent and chain transfer agent in a reaction kettle, sequentially adding a third section oxidant, a second section oxidant, a first section oxidant, a reducer and an auxiliary reducer in nitrogen introducing process, continuously introducing nitrogen, and than stopping nitrogen introduction, sealing, and carrying out insulation polymerization reaction; opening a reaction kettle bottom valve after being placed, pressing out a rubber block by compressed air and disintegrating the rubber block into colloidal particles by a granulator; and hydrolyzing the colloidal particles, and preparing a product through treatments of granulation, drying, crushing, screening and packaging. The aluminum oxide plant red mud sinking agent has the advantages of high molecular weight, fast dissolving speed, high hydrolysis degree and low cost.
Owner:安徽省天润功能高分子工程研究有限公司
Anti-human serum albumin single-chain antibody and method for connecting polypeptide medicine with nitrogen terminal of antibody
ActiveCN102875675ASmall molecular weightStrong molecular weightImmunoglobulins against animals/humansPharmaceutical non-active ingredientsSolubilitySingle-Chain Antibodies
The invention discloses an anti-human serum albumin single-chain antibody and a method for connecting polypeptide medicine with the nitrogen terminal of the antibody. A VL chain region has a complementary identification region (CDR) which has the following amino acid sequences of CDRs: N-SEQ-08 of CDR1, N-SEQ-09 of CDR2 and N-SEQ-010 of CDR3; a VH chain region has a complementary identification region which has the following amino acid sequences of CDRs: N-SEQ-05 of CDR1, N-SEQ-06 of CDR2 and N-SEQ-07 of CDR3; the VH chain takes the amino acid sequence shown as N-SEQ-02 as an expression form; the VH chain takes the amino acid sequence shown as N-SEQ-04 as an expression form; and the VH chain region and the VL chain region are connected through a protein hinge shown as N-SEQ-01 or N-SEQ-03. The single-chain antibody has small molecular weight, strong specificity, weak immunogenicity and high water solubility and is easily produced on a large scale in a fermentation mode. The invention also discloses a composition prepared from the single-chain antibody; and the medicine can effectively prolong the half-life period of polypeptide biological medicines.
Owner:李冉
High-temperature-resistant abrasion-resistant non-stick pan coating, preparation method and non-stick pan with same
ActiveCN105567066AStrong molecular weightHigh molecular weightCooking-vessel materialsPolyether coatingsSilanesKetone
The invention provides a high-temperature-resistant abrasion-resistant non-stick pan coating, a preparation method and a non-stick pan with the same. Nickel plating is conducted on the surface of a metal pan base body through the electrochemical method. Under the action of a magnetic field, a formed surface nickel layer is uniform and flat, and accordingly it is guaranteed that the subsequent coating is flat and uniform. Secondly, an annular structure in a poly(aryl ether nitrile ketone) molecular main chain makes the coating have good high temperature resistance, a molecular structure contains strong-polarity groups, namely nitrile groups, and the nitrile groups generate strong action force on the surface of a metal base material. Thirdly, under the action of irradiation, a silane coupling agent KH792 and poly(aryl ether nitrile ketone) have grafting reaction, and heat resistance is further improved, so that organic solvent molecules cannot permeate into the metal base material, stability is improved, the organic solvent molecules and the surface of the metal base material are connected in a strong chemical bond mode, and adhesion of the coating is greatly improved. Accordingly, the high-temperature-resistant anti-wear non-stick pan coating prepared through the method does not contain fluorine and is resistant to high temperature, abrasion and scratching.
Owner:NINGBO GRAMMY KITCHENWARE
Modified antibacterial peptide C-CM8 of Chelonia mydas antibacterial peptide and preparation method and application thereof
PendingCN112625107ABroad-spectrum high-efficiency antibacterial activityStrong anti-inflammatory activityAntibacterial agentsCosmetic preparationsAnti-inflammatoryMolecular biology
The invention provides a modified antibacterial peptide C-CM8 of a Chelonia mydas antibacterial peptide and a preparation method and application thereof. The N end of the modified antibacterial peptide is an alpha helix, the C end is a polypeptide of an irregular structure, the modified antibacterial peptide contains 17 amino acid residues, the molecular weight is 1998.37Da, and the isoelectric point is 12.60. The modified antibacterial peptide C-CM8 has broad-spectrum and efficient antibacterial activity and extremely high anti-inflammatory activity, has the advantages of being small in molecular weight, simple in structure, low in hemolytic activity, simple in preparation method and the like, is expected to become a novel efficient antibacterial drug, has wide development and application prospects, and is especially used for preparing antibacterial drugs or compositions, bacteria growth inhibiting drugs or compositions, anti-inflammatory drugs or compositions, preservatives, animal feed additives or cosmetic additives.
Owner:宜肌坊(厦门)生物科技有限公司
Soybean protein-based double-crosslinking self-healing supermolecular sulfur positive electrode aqueous binder, and preparation method and application thereof
ActiveCN111682211APrevent crushingInhibit sheddingPositive electrodesLi-accumulatorsLithium sulfurCross linker
The invention discloses a soybean protein-based double-crosslinking self-healing supermolecular sulfur positive electrode water-based binder and a preparation method and application thereof. The binder is prepared from hydrolyzed soy protein, a small molecular cross-linking agent and a copolymer monomer through a free radical copolymerization method. The binder has a three-dimensional network cross-linked structure and the characteristics of raw materials, so the binder has strong bonding strength, excellent self-repairing performances, strong lithium polysulfide adsorption capacity and biodegradability. When the binder is applied to the lithium-sulfur battery, the cycle life of the battery can be effectively prolonged, the rate capability of the battery is optimized, and the specific capacity of the battery is improved. A free radical copolymerization method is used, hydrolyzed soy protein and a copolymer are connected in a physical crosslinking mode through chemical crosslinking of asmall molecular crosslinking agent and hydrogen bonds existing between the hydrolyzed soy protein and the copolymer, and the binder with a three-dimensional network structure is obtained. The binderprepared by the method is endowed with strong adhesive capacity and self-healing performance due to the double cross-linking effect in the binder.
Owner:SOUTH CHINA UNIV OF TECH
Nano microsphere preparation used for chemotherapy of tumors and preparation method thereof
InactiveCN101732258BIncrease drug concentrationSmall toxicityOrganic active ingredientsGranular deliveryDiseaseSide effect
Owner:AFFILIATED HUSN HOSPITAL OF FUDAN UNIV
Low-viscosity high-reactivity low-volume-contraction modified dipentaerythritol acrylate and preparation method thereof
ActiveCN103408464ALow viscosityLow viscosity high reactivityCarbamic acid derivatives preparationOrganic compound preparationPentaerythritolContraction rate
The invention discloses low-viscosity high-reactivity low-volume-contraction modified dipentaerythritol acrylate and a preparation method thereof. The low-viscosity high-reactivity low-volume-contraction modified dipentaerythritol acrylate has a structural formula as shown in the specification. The degree of functionality of the low-viscosity high-reactivity low-volume-contraction modified dipentaerythritol acrylate is 6-9, the viscosity is 300-2000mPa.s, and the molecular weight is 750-2500, so that the low-viscosity high-reactivity low-volume-contraction modified dipentaerythritol acrylate has very high reactivity, lower viscosity, high molecular weight, low migration, high curing efficiency, low volume contraction rate, good adhesive force and adjustable flexibility, and a prepared coating is good in impact resistance and strong in adhesive force; and the preparation method disclosed by the invention is simple and easy to control, and an obtained product is high in purity and good in performance.
Owner:JIANGSU RUIYANG CHEM
Bisphenol A isocyanate phenolic resin and preparation method thereof
ActiveCN109679039AHigh reactivityReduce reactivityAldehyde/ketone condensation polymer adhesivesChemical reactionDibutyltin dilaurate
The invention discloses a bisphenol A isocyanate phenolic resin and a preparation method thereof. According to the method, hexamethylene diisocyanate is adopted as a grafting monomer, dibutyltin dilaurate is adopted as a catalyst, under the action of a catalyst, the hexamethylene diisocyanate is grafted, then a bisphenol A formaldehyde phenolic resin with rigidity and the hexamethylene diisocyanate can be subjected to chemical reactions at a normal temperature as isocyanate can be easily reacted with a polyhydroxy compound and has very high reaction activity, and the defects that the bisphenolA formaldehyde phenolic resin is low in reaction activity at a normal temperature, complex in preparation process and high in energy consumption in reaction can be solved; the preparation method is simple in preparation process, a main body reaction can be sufficient, the grafting rate is high, and as hydroxyl on the bisphenol A formaldehyde phenolic resin is replaced by an isocyanate group, thehydrophilcity of the prepared bisphenol A formaldehyde phenolic resin can be weakened and the waterproof properties can be improved.
Owner:SHAANXI UNIV OF SCI & TECH
Method for synthesizing polyolefin from alpha-olefin prepared from coal and product
The invention provides a method for synthesizing polyolefin from alpha-olefin prepared from coal and a product. The method comprises the following step: under the action of a catalyst containing a fluorinated alcohol load and a cocatalyst, carrying out polymerization reaction on the alpha-olefin prepared from the coal. The catalyst containing the fluorinated alcohol load takes magnesium halide as a carrier, an aluminum alkyl compound as an activating agent and fluorinated alcohol as an electron donor to load a transition metal compound; and the fluorinated alcohol is an aliphatic fluorine-containing alcohol compound or monohydric alcohol. The polymerization method disclosed by the invention can be used for mildly and efficiently polymerizing C5 and above alpha-olefin to obtain high-molecular-weight and high-branching-degree polyolefin, the method is simple to operate, and the product is easy to obtain. According to the method disclosed by the invention, the alpha-olefin prepared from coal is used as a raw material, a single component does not need to be separated, only simple treatment is needed, the weight-average molecular weight of the obtained product is not less than 150 thousand Daltons, and the branching degree is not less than 30 branched chains / 1000C.
Owner:SHANGHAI INST OF ORGANIC CHEMISTRY - CHINESE ACAD OF SCI
Gaseous-phase in-situ polymerization method for preparing ultra-high molecular weight polyethylene graphene composite material
The invention discloses a gaseous-phase in-situ polymerization method for preparing an ultra-high molecular weight polyethylene graphene composite material. The method comprises the following steps of: reacting graphene which serves as a catalyst carrier with a transition metal compound to prepare a solid catalyst under a certain conditions, and reacting to prepare the ultra-high molecular weight polyethylene graphene composite material under the gaseous-phase conditions without a diluent. Graphene serves as the catalyst carrier and a reinforcing filler and is reacted under the gaseous-phase conditions, so that the polymerization activity can be improved through catalyst loading; and graphene in the composite material is uniformly dispersed, so that the composite material has excellent performance and particularly high impact resistance, and the problems that the traditional composite material is subjected to brittle rupture and is ineffective in long-term use process are solved.
Owner:HENAN UNIV OF SCI & TECH
Modified tripentaerythritol acrylic ester with low viscosity, high reactivity and shrunk volume as well as preparation method thereof
ActiveCN103435516ALow viscositySmall molecular weightCarbamic acid derivatives preparationOrganic compound preparationPentaerythritolLow volume
The invention discloses a modified tripentaerythritol acrylic ester with low viscosity, high reactivity and shrunk volume as well as a preparation method thereof. The structural formula of the modified tripentaerythritol acrylic ester with low viscosity, high reactivity and shrunk volume is shown in specification. The modified tripentaerythritol acrylic ester has degree of functionality of 8-12, viscosity of 800-4000 m Pa.s and molecular weight of 1000-4000, and the modified tripentaerythritol acrylic ester also has very high reactivity, low viscosity, low migration of high molecular weight, high solidification efficiency, low volume shrinkage, excellent adhesive force, adjustable softness and adjustable flexibility. A prepared coating is good in impact resistance and strong in adhesive force. The preparation method is simple and easy to control, and the obtained product is high in purity and good in properties.
Owner:JIANGSU RUIYANG CHEM
Low-viscosity high-reactivity low-volume-shrinkage modified pentaerythritol acrylate and preparation method thereof
ActiveCN103435515ALow viscosityHigh viscosityCarbamic acid derivatives preparationOrganic compound preparationPentaerythritolStructural formula
The invention discloses low-viscosity high-reactivity low-volume-shrinkage modified pentaerythritol acrylate and a preparation method thereof. The low-viscosity high-reactivity low-volume-shrinkage modified pentaerythritol acrylate has a structural formula as shown in the specification. The functionality of the low-viscosity high-reactivity low-volume-shrinkage modified pentaerythritol acrylate is 4-6, the viscosity is 40-70mPa.s, and the molecular weight is 750-2500, so that the low-viscosity high-reactivity low-volume-shrinkage modified pentaerythritol acrylate is very high in reactivity, low in viscosity, high in molecular weight, low in migration, high in curing efficiency, low in volume shrinkage ratio, good in adhesive force and adjustable in flexibility, and a prepared paint is good in impact resistance and strong in adhesive force. The preparation method disclosed by the invention is simple and easy to control, and the obtained product is high in purity and good in performance.
Owner:JIANGSU RUIYANG CHEM
A kind of bisphenol A isocyanate phenolic resin and preparation method thereof
ActiveCN109679039BHigh reactivityReduce reactivityAldehyde/ketone condensation polymer adhesivesPolymer sciencePtru catalyst
Owner:SHAANXI UNIV OF SCI & TECH
Gas generating agent for fire extinguishing device and preparation method thereof
ActiveCN107445782BWell mixedLong spray distanceChemical industryExplosivesPotassium nitrateFoaming agent
The invention provides a gas generating agent of a fire-extinguishing device and a preparation method thereof and relates to the technical field of fire fighting and fire extinguishing. The gas generating agent comprises a main component and auxiliary components, wherein the main component is prepared by the following materials in percent by weight: 60-70% of potassium nitrate, 10-20% of melamine and no less than 5% of foaming agent; and the auxiliary components comprise the following materials in percent by weight: 6-12% of adhesive and no more than 5%. The gas generating agent provided by the invention has the advantages that the components are simple, the cost is low, the generated gas is stable in pressure and strong in continuity, and the gas generation amount is large, so that the fire extinguishing efficiency of the fire-extinguishing device is high and the like.
Owner:陕西远成消防工程设备有限公司
Modified dipentaerythritol acrylate with low viscosity, high reactivity and low volume shrinkage and preparation method thereof
ActiveCN103408464BLow viscosityLow viscosity high reactivityCarbamic acid derivatives preparationOrganic compound preparationPolymer sciencePentaerythritol
The invention discloses low-viscosity high-reactivity low-volume-contraction modified dipentaerythritol acrylate and a preparation method thereof. The low-viscosity high-reactivity low-volume-contraction modified dipentaerythritol acrylate has a structural formula as shown in the specification. The degree of functionality of the low-viscosity high-reactivity low-volume-contraction modified dipentaerythritol acrylate is 6-9, the viscosity is 300-2000mPa.s, and the molecular weight is 750-2500, so that the low-viscosity high-reactivity low-volume-contraction modified dipentaerythritol acrylate has very high reactivity, lower viscosity, high molecular weight, low migration, high curing efficiency, low volume contraction rate, good adhesive force and adjustable flexibility, and a prepared coating is good in impact resistance and strong in adhesive force; and the preparation method disclosed by the invention is simple and easy to control, and an obtained product is high in purity and good in performance.
Owner:JIANGSU RUIYANG CHEM
Nitrogen-containing compounds, organic electroluminescent devices and electronic devices
ActiveCN111875505BHigh molecular weightStrong molecular weightGroup 4/14 element organic compoundsOrganic chemistry methodsOrganic electroluminescenceOrganic chemistry
The application provides a nitrogen-containing compound represented by Chemical Formula 1, an organic electroluminescent device and an electronic device, which belong to the technical field of organic materials. The nitrogen-containing compound can improve the performance of the organic electroluminescence device.
Owner:SHAANXI LIGHTE OPTOELECTRONICS MATERIAL CO LTD
Anti-human serum albumin single-chain antibody and method for connecting polypeptide medicine with nitrogen terminal of antibody
ActiveCN102875675BSmall molecular weightStrong molecular weightImmunoglobulins against animals/humansPharmaceutical non-active ingredientsSolubilitySingle-Chain Antibodies
The invention discloses an anti-human serum albumin single-chain antibody and a method for connecting polypeptide medicine with the nitrogen terminal of the antibody. A VL chain region has a complementary identification region (CDR) which has the following amino acid sequences of CDRs: N-SEQ-08 of CDR1, N-SEQ-09 of CDR2 and N-SEQ-010 of CDR3; a VH chain region has a complementary identification region which has the following amino acid sequences of CDRs: N-SEQ-05 of CDR1, N-SEQ-06 of CDR2 and N-SEQ-07 of CDR3; the VH chain takes the amino acid sequence shown as N-SEQ-02 as an expression form; the VH chain takes the amino acid sequence shown as N-SEQ-04 as an expression form; and the VH chain region and the VL chain region are connected through a protein hinge shown as N-SEQ-01 or N-SEQ-03. The single-chain antibody has small molecular weight, strong specificity, weak immunogenicity and high water solubility and is easily produced on a large scale in a fermentation mode. The invention also discloses a composition prepared from the single-chain antibody; and the medicine can effectively prolong the half-life period of polypeptide biological medicines.
Owner:李冉
Antioxidant peptide sourced from limnonectes fragilis as well as gene and application thereof
ActiveCN103613645BStrong molecular weightSmall molecular weightCosmetic preparationsPeptide/protein ingredientsChemical synthesisAntioxidant capacity
The invention relates to antioxidant peptide sourced from limnonectes fragilis as well as a gene and an application thereof and belongs to the technical field of biomedicine. The primary structural sequences of three antioxidant peptides Fragilin-A1, Fragilin-B2 and Odorranain-Q-Lf which are sourced from the limnonectes fragilis, have the encoding genes obtained through a gene clone way, are obtained through a chemical synthesis method and respectively contain 15 amino acid residues, 12 amino acid residues and 21 amino acid residues; the molecular weight of each of the three antioxidant peptides is respectively 1720.95Da, 1464.66Da and 2597.18Da; an isoelectric point of each of the three antioxidant peptides is respectively 8.04, 8.75 and 9.53. The three antioxidant peptides are strong in antioxidant activity, small in molecular weight, simple in structure, low in hemolytic activity and simple in preparation method. When the antioxidant peptide is applied to antioxidant medicines, foods or cosmetic additives, the antioxidant effect of the medicines, the foods or the cosmetic additives can be improved, and the application prospect is promising.
Owner:DALIAN UNIV OF TECH
Anti-human serum albumin single-chain antibody and method for connecting polypeptide drugs to carbon end thereof
ActiveCN102827277BSmall molecular weightStrong molecular weightPeptide/protein ingredientsMetabolism disorderSingle-Chain AntibodiesAntiendomysial antibodies
The invention discloses an anti-human serum albumin single-chain antibody and a method for connecting polypeptide drugs to a carbon end of the anti-human serum albumin single-chain antibody. According to the anti-human serum albumin single-chain antibody a, a VH (Variable fragments of heavy chain) chain area of the single-chain antibody has a CDR (Complementarity-Determining Region) amino acid sequence of a complementary recognition domain, shown as C-SEQ (Sequence)-05, C-SEQ-06 and C-SEQ-07; a VL (Variable fragments of light chain) chain area of the single-chain antibody has a CDR amino acid sequence of a complementary recognition domain, shown as C-SEQ-08, C-SEQ-09 and C-SEQ-010; and the amino sequence of the single-chain antibody and the amino sequences of polypeptide drugs are connected from a nitrogen end of the single-chain antibody by a protein linking hinge shown as C-SEQ-01 or C-SEQ-03. The single-chain antibody disclosed by the invention has small molecular weight, high antibody specificity, weak immunogenicity and good water solubility, and is easily massively produced through a fermenting way. The invention also discloses a composition manufactured by using the single-chain antibody disclosed by the invention; and the composition can effectively prolong a half-life period of the polypeptide drugs.
Owner:李冉
Gas generating agent of fire-extinguishing device and preparation method thereof
ActiveCN107445782AStable gas pressureStrong persistenceChemical industryExplosivesAdhesivePotassium nitrate
The invention provides a gas generating agent of a fire-extinguishing device and a preparation method thereof and relates to the technical field of fire fighting and fire extinguishing. The gas generating agent comprises a main component and auxiliary components, wherein the main component is prepared by the following materials in percent by weight: 60-70% of potassium nitrate, 10-20% of melamine and no less than 5% of foaming agent; and the auxiliary components comprise the following materials in percent by weight: 6-12% of adhesive and no more than 5%. The gas generating agent provided by the invention has the advantages that the components are simple, the cost is low, the generated gas is stable in pressure and strong in continuity, and the gas generation amount is large, so that the fire extinguishing efficiency of the fire-extinguishing device is high and the like.
Owner:陕西远成消防工程设备有限公司
A kind of phenanthroimidazole electroluminescent material with circularly polarized luminescence and its preparation method and application
ActiveCN113121511BThe molecular structure is single and clearEasy to synthesizeGroup 4/14 element organic compoundsSolid-state devicesDisplay deviceLight emission
The invention discloses a class of phenanthroimidazole electroluminescence material with circularly polarized light emission, a preparation method and application thereof. The structure of the described phenanthroimidazole electroluminescent material with circularly polarized luminescence is shown in formula (I), and the material: (1) has circularly polarized luminescent properties, and prepares a CP-OLED device as a light-emitting layer, which can improve the efficiency of the device. (2) It has localized hybrid charge transfer state performance, which can effectively use triplet excitons to improve the utilization rate of excitons and improve the electroluminescence performance of devices; ( 3) The luminescent material CPPI has a large degree of conjugation and strong rigidity, which can improve the thermal stability of the material, increase the radiation transition rate of the material, and improve its luminous efficiency; (4) The luminescent material CPPI has a large molecular weight and has a good Solubility, solution processing technology can be used to prepare large-area flexible display devices, which has great development potential and prospects in the field of organic electronic display.
Owner:SOUTH CHINA UNIV OF TECH
A soybean protein-based double-crosslinked self-healing supramolecular sulfur cathode water-based binder and its preparation method and application
ActiveCN111682211BPrevent crushingInhibit sheddingPositive electrodesLi-accumulatorsPolymer scienceElectrical battery
The invention discloses a soybean protein-based double-crosslinked self-healing supramolecular sulfur cathode aqueous binder, a preparation method and application thereof. The binder is prepared from hydrolyzed soybean protein, a small molecule cross-linking agent and a copolymer monomer through a radical copolymerization method. The binder has a three-dimensional network cross-linked structure and the characteristics of raw materials make it have strong bond strength, excellent self-healing performance, strong lithium polysulfide adsorption capacity and biodegradability. When the binder is applied in a lithium-sulfur battery, the cycle life of the battery can be effectively extended, the rate performance of the battery can be optimized, and the specific capacity of the battery can be improved. The present invention uses the free radical copolymerization method to connect the hydrolyzed soybean protein and the copolymer through the chemical crosslinking of the small molecule crosslinking agent and the hydrogen bond existing between the former two in a physical crosslinking manner to obtain a three-dimensional network structure of adhesives. The double cross-linking effect inside the adhesive prepared by the method endows the adhesive with strong bonding ability and self-healing performance.
Owner:SOUTH CHINA UNIV OF TECH
A kind of fibrinolytic active protein from scorpion tail and its preparation method and application
InactiveCN101709083BStrong molecular weightSmall molecular weightPeptide/protein ingredientsPeptide preparation methodsAntigenIon exchange
The invention discloses a fibrinolytic active protein from scorpion tail and its preparation method and application. The preparation method of the fibrinolytic active protein with a molecular weight of 37.69kD from scorpion tail is as follows: washing the scorpion tail, grinding crushed, added to sodium phosphate buffer, leached overnight at 4°C; centrifuged to remove the precipitate, salted out in sections, and 40%-70% of the fraction was taken; finally purified by diethylaminoethyl-32 cellulose ion-exchange chromatography column, and used Elution with Tris-HCl buffer solution, collect active protein peaks, concentrate, and freeze-dry; the application of the fibrinolytic active protein of the present invention in the preparation of antitumor drugs; the fibrinolytic active protein involved in the invention is a single group in scorpion tail It is easy to purify and prepare in batches, has strong fibrinolytic activity, high specific activity, and no toxicity; it has small molecular weight and low antigenic reaction, and is an ideal antitumor drug.
Owner:GUANGDONG UNIV OF TECH
A high-temperature-resistant wear-resistant non-stick pan coating, its preparation method and its non-stick pan
ActiveCN105567066BStrong molecular weightHigh molecular weightCooking-vessel materialsPolyether coatingsSilanesOrganosolv
The invention provides a high-temperature-resistant abrasion-resistant non-stick pan coating, a preparation method and a non-stick pan with the same. Nickel plating is conducted on the surface of a metal pan base body through the electrochemical method. Under the action of a magnetic field, a formed surface nickel layer is uniform and flat, and accordingly it is guaranteed that the subsequent coating is flat and uniform. Secondly, an annular structure in a poly(aryl ether nitrile ketone) molecular main chain makes the coating have good high temperature resistance, a molecular structure contains strong-polarity groups, namely nitrile groups, and the nitrile groups generate strong action force on the surface of a metal base material. Thirdly, under the action of irradiation, a silane coupling agent KH792 and poly(aryl ether nitrile ketone) have grafting reaction, and heat resistance is further improved, so that organic solvent molecules cannot permeate into the metal base material, stability is improved, the organic solvent molecules and the surface of the metal base material are connected in a strong chemical bond mode, and adhesion of the coating is greatly improved. Accordingly, the high-temperature-resistant anti-wear non-stick pan coating prepared through the method does not contain fluorine and is resistant to high temperature, abrasion and scratching.
Owner:NINGBO GRAMMY KITCHENWARE
Refining method of ginkgo flavone
InactiveCN100383135CGood water solubilityHigh molecular weightSugar derivativesSugar derivatives preparationWater bathsAlcohol
A refining method of ginkvone is carried out by dissolving GBE into 60% alcohol monohydrate in proportion of 1:200mass ratio, first super-filtering the GBE solution at 0.05-0.3Mpa and 10-50 DEG C, collecting filtrate, decompress concentrating the collected filtrate, dissolving residual steamed into anhydrous ethanol in proportion of 1:50 mass ratio, adding beta-cyclodextrin or modified beta-cyclodextrin into the solution obtained in proportion of flavone:beta-cyclodextrin or modified beta-cyclodextrin=1:9-1:1, reacting in water bath at 20-90 DEG C for 15mins-5hrs, reacting at normal temperature for 30mins-24hrs, second super-filtering the reactant at 0.05-0.3Mpa and 10-50 DEG C, and collecting the concentrated liquid to obtain the final product. It is simple, has short production period and more content and saves raw materials.
Owner:NANJING UNIV
New anti-embolism medicine using small peptide arginine-glycine-aspartic acid (RGD) as leading compound
InactiveCN1176105CAggregation inhibiting activityImprove stabilityTripeptide ingredientsBlood disorderThrombocyte aggregationArginine
The present invention relates to a new kind anti-embolism linear small-peptide molecule developed based on the protein structure and function research. It has the amino acid sequence of X-Gly-Asp-Y, powerful activity of inhibiting thrombocyte aggregation, high stability, good specificity and selectivity, small molecular weight, to immunogenicity, simple structure, low cost and easy synthesis. Owing to the effective binding with thrombocyte GPIIbIIIa and competitive inhibition of the combination between fibrinogen and thrombocyte, the small peptide may be used as thrombocyte inhibitor in basic research and clinical application.
Owner:牛勃
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