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43results about How to "Facilitate redispersion" patented technology
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Dry solids of anionically modified cellulose nanofibers and processes for preparing them
Dry solids of anionically modified cellulose nanofibers with good redispersion are provided by incorporating 5 to 300% by mass of a water-soluble polymer relative to the anionically modified cellulose nanofibers during the preparation of the dry solids of anionically modified cellulose nanofibers.
Owner:NIPPON PAPER IND CO LTD
Preparation method of highly-dispersed copper-zinc catalyst for carbon dioxide reduction and use method thereof
ActiveCN109746022AImprove stabilityHigh activityCatalyst activation/preparationCarbon monoxideChemistryCarbon dioxide
The invention provides a preparation method of a highly-dispersed copper-zinc catalyst for carbon dioxide reduction and a use method thereof. The preparation method comprises the steps of firstly, synthesizing a copper oxide nano-particle precursor with uniform particle sizes; then preparing a ZIF (Zeolitic Imidazolate Framework)-8 MOFs (Metal Organic Frameworks)-coated copper oxide composite nanomaterial through liquid phase synthesis; and calcining the nano material through temperature programming to obtain the nitrogen-doped carbon framework-coated highly-dispersed copper-zinc catalyst. The preparation method is characterized in that the copper oxide nano-particles are added in the process of preparing the ZIF-8 of the MOFs material, so that the copper oxide nano-particles are uniformly loaded in the MOFs in situ, the copper reduction and redispersion are implemented while the carbon framework-coated highly-dispersed zinc is obtained after high temperature calcination; a large amount of pyridine nitrogen is also present in the carbon framework; a novel preparation technology of a pyridine nitrogen-doped and carbon framework-supported highly-dispersed copper-zinc catalyst is developed; the catalyst is applied to the carbon monoxide hydrogenation reduction reaction to produce carbon monoxide, and has excellent catalytic activity; the highly-dispersed copper-zinc active sitesand the presence of a large amount of pyridine nitrogen have great promotion actions on improvement of the catalytic activity.
Owner:NANKAI UNIV
Insulin nano transdermal patch and preparation method thereof
InactiveCN103705494AHigh drug loadingHigh local concentrationPeptide/protein ingredientsMetabolism disorderTransdermal patchTreatment effect
The invention relates to an insulin nano transdermal delivery preparation and a preparation method thereof. The insulin nano transdermal delivery preparation takes recombinant human insulin as an active pharmaceutical ingredient and is a filled closed type transdermal preparation consisting of an anti-sticking layer, a drug-loaded layer and a back lining layer. The drug-loaded layer consists of nano recombinant human insulin, a carrier, a penetration enhancer and a plasticizer. The nano recombinant human insulin is obtained by dissolving insulin in a solvent, adding water-soluble auxiliary agents including liposome, chitosan, HPMC (hydroxy propyl methyl cellulose) and the like and an aqueous solution of a freeze-drying protective additive, performing low-temperature high-speed stirring and then performing freeze-drying. The patch disclosed by the invention realizes transdermal noninvasive administration through nano-scale combination of insulin and the carrier to ensure that the bioavailability of the insulin is greatly improved; the patch has the advantages of high transdermal absorption rate, fast response, good treatment effect and good product stability, does not have anaphylactic and toxic reactions to skins, and has the characteristics of good safety, small side effect and convenience in use. The preparation method of the insulin nano transdermal patch disclosed by the invention is simple, low in production cost, and easy to magnify.
Owner:HUBEI UNIVERSITY OF MEDICINE
Propane dehydrogenation catalyst containing V and preparation method thereof
ActiveCN103785388AGood dispersionHigh selectivityHydrocarbonsMetal/metal-oxides/metal-hydroxide catalystsActive componentDehydrogenation
The invention discloses a propane dehydrogenation catalyst, which employs silica as a carrier, Pt as a dehydrogenation active component, and Sn and V as auxiliary agents. The catalyst comprises, by weight, 0.1-2% preferably 0.2-0.8%, of dehydrogenation active component, and comprises, calculated by the weight of the carrier, 0.1-10% preferably 1-5%, of the auxiliary agent Sn, and 0.1-10% preferably 1-5% of the auxiliary agent V. A preparation method of the propane dehydrogenation catalyst is by loading auxiliary agents Sn and V and the active component Pt by using silica gel as a carrier through an impregnation method. The method can substantially increase the activity stability and olefin selectivity of the catalyst.
Owner:CHINA PETROLEUM & CHEM CORP +1
Preparation method and application of auxiliary metal-doped Cu-SAPO-18 catalyst
InactiveCN107185589AImprove SCR activityHigh hydrothermal stabilityGas treatmentMolecular sieve catalystsNitrogen oxidesIon exchange
The invention provides a preparation method and application of an auxiliary metal-doped Cu-SAPO-18 catalyst. The preparation method comprises the following steps: firstly, performing hydrothermal synthesis to obtain H-SAPO-18, then performing ion exchange and impregnation to obtain a Cu-SAPO-18 catalyst, and finally adding the Cu-SAPO-18 into a salt solution of auxiliary metal to obtain the metal-doped Cu-SAPO-18 catalyst according to an impregnation method. The invention further provides the optimal content of the auxiliary metal, and the auxiliary metal is applied to selective catalytic reduction of nitrogen oxide through NH3, so that the catalytic activity, the hydrothermal stability and SO2 poisoning resistance of the original Cu-SAPO-18 catalyst are improved; the preparation process of the catalyst provided by the invention is simple, and easy to repeat and operate.
Owner:HUAZHONG UNIV OF SCI & TECH
Premix composition for clarifying beer
InactiveUS7153534B2Efficient removalReduction in chill hazeOther chemical processesWort preparationTanninSlurry
A premix composition for clarifying beverages like beer includes, by weight, (a) about 40 to 90%, preferably 60–85%, of silica xerogel having less than 10% water therein, preferably 5% or less, and a particle size, as defined by its mean volume average diameter MV, in both the dry state and as a 10% aqueous slurry, of less than 50μ, preferably about 5–30μ, and (b) about 10 to 60%, preferably 15–40%, of crosslinked polyvinylpyrrolidone having a particle size as defined, in the dry state, of about 10 to 50μ, and about 30–60μ in a 10% aqueous slurry, and a process of obtaining, chill-haze stabilized beer with substantial reduction in high molecular weight proteins, as well as polyphenols, flavanoids and tannins, in an efficient and effective single-step process at a rapid filter-flow rate, with undetectable residual soluble plyvinylpyrrolidone thereafter, and no microbiological growth in the premix, effective haze stability after time, and advantageous redispersibility of the premix used in the process.
Owner:ISP CAPITAL +2
Method for concentrating fibril cellulose and fibril cellulose product
ActiveUS20140329094A1Improve concentrationFacilitate redispersionSynthetic resin layered productsPulp de-wateringCelluloseFiber
A method for concentrating fibril cellulose including subjecting aqueous fibril cellulose at a concentration of not higher than 5% to pressure filtration where water is removed from the fibril cellulose by applying pressure to the aqueous fibril cellulose, and continuing the pressure filtration continued to an end point where over 50% of the water initially present is removed from the fibril cellulose. The pressure filtration is performed at a temperature of 30° C. or higher.
Owner:UPM-KYMMENE OYJ
Aerosol-Deliverable Formulations
InactiveUS20070272281A1Excellent cleaningHigh fragrance impactInorganic/elemental detergent compounding agentsCosmetic preparationsMedicineAbrasive
An aerosol-deliverable formulation comprises a liquid abrasive composition having a viscosity of 1000 mPas or less, and a propellant. The formulation provides effective, and unexpected, suspensions of abrasives that do not settle from the suspension to form a hard cake of non-redispersible solid material.
Owner:QUEST INTERNATIONAL
Nano ibuprofen dry powder, tablets and preparation method thereof
InactiveCN103655501AImprove solubilityFacilitate redispersionOrganic active ingredientsAntipyreticBiocompatibility TestingSlurry
The invention relates to a preparation method of nano ibuprofen dry powder and tablets thereof. The preparation method comprises the following steps of: firstly dissolving ibuprofen in an organic solvent, then dissolving multiple pharmaceutical adjuvants into water, carrying out spraying and drying on slurry formed by mixing the two types of solution under proper conditions at room temperature, successfully preparing nano ibuprofen powder with the water-soluble particle diameter being 20-200nm, and mixing and pressing the dry powder and proper adjuvants into the tablets. The tablets can be dispersed in water quickly, and the dissolving-out rate is obviously higher than that of a tablet mixed and pressed by crude drugs and same adjuvants. All the adjuvants in the invention conform to pharmacopeia standards, is biodegradable and is good in biocompatibility. The preparation method is simple in process, safe in operation, low in cost and easy in realizing industrial production of nano ibuprofen drugs.
Owner:HUBEI UNIVERSITY OF MEDICINE
Dehydrogenation catalyst with silicon oxide as carrier and preparation method thereof
ActiveCN103785411ARestore fastInhibition decreasedHydrocarbonsMetal/metal-oxides/metal-hydroxide catalystsActive componentDehydrogenation
The invention discloses a dehydrogenation catalyst, which uses silica as a carrier, Pt as a dehydrogenation active component, Sn as a first aid, one or more metal of Cu, Fe, Co and Ni other as a second aid; and the catalyst comprises 0.1%-2% of the dehydrogenation active component, and calculated by the weight of the carrier 0.1-10 wt% of the first aid and 0.1-10 wt% of the second aid. A preparation method of the dehydrogenation catalyst is as below: loading the first aid Sn and the second aid, which is one or more selected from Cu, Fe, Co and Ni, and the active component Pt, by using silica gel as the carrier through an immersion method. This method can substantially increase the activity and stability of the catalyst and selectivity of alkene.
Owner:CHINA PETROLEUM & CHEM CORP +1
Lyophilised Lactic Acid Bacteria And Bifidobacteria Products With A High Degree Of Dispersibility
Lyophilised lactic acid bacteria and bifidobacteria products are described, characterised by a high degree of dispersibility thanks to the use of polyalcohols and / or sugars as dispersing agents. The liquid dispersions of these lyophilised products are characterised by a high degree of stability.
Owner:VSL PHARMA INC
Ink composition and pattern forming method
ActiveUS20080113098A1Prevent drynessPrevent evaporationDuplicating/marking methodsConductive materialAlcoholWater soluble
An ink composition includes a metal microparticle, a dispersion medium having water as a main ingredient, a dispersant for dispersing the metal microparticle into the dispersion medium, and a water-soluble polyhydric alcohol that is trivalent to hexavalent and solid under normal conditions, and whose concentration is 5 to 20 weight % relative to a total weight of the ink composition.
Owner:SEIKO EPSON CORP
Preparation method of aqueous solution redispersible cellulose nanofibers
The invention relates to a preparation method of aqueous solution redispersible cellulose nanofibers (CNF). The method comprises the following steps: firstly, performing beating treatment on a plant fiber raw material, performing nano homogenization treatment on the slurry to obtain a CNF suspension, adjusting the pH of the prepared CNF suspension, adding a certain amount of potassium chloride, and performing drying treatment. In the method provided by the invention, the CNF is prepared by adopting the mechanical method, and the yield is higher; in the method, the CNF suspension obtained after the pH is adjusted and a salt is added for treatment is easily redispersible in an aqueous solution after being dried by vacuum, and the characteristics such as stability after re-dispersion are good; the method can reduce the storage and transportation costs of the cellulose nanofibers, and is easy to operate, and suitable for large-scale production; and the method provides a novel idea and a novel method for high-value utilization of cellulose, and provides a novel method for obtaining and preparation of the aqueous solution redispersible CNF.
Owner:QILU UNIV OF TECH
Gel organosol including amphipathic copolymeric binder having selected molecular weight and liquid toners for electrophotographic applications
ActiveUS7008745B2Easy transferLow and no back transferDevelopersElectrographic processes using charge patternSolubilityElectrical conductor
The invention provides liquid toner compositions in which the polymeric binder is chemically grown in the form of copolymeric binder particles dispersed in a liquid carrier. The polymeric binder includes one amphipathic copolymer comprising one or more S material portions and one or more D material portions, wherein the S material portion of the copolymer has molecular weight and solubility properties selected to provide a three dimensional gel of controlled rigidity which can be reversibly reduced to a fluid state by application of energy. The toners as described herein surprisingly provide compositions that are particularly suitable for electrophotographic processes wherein the transfer of the image from the surface of a photoconductor to an intermediate transfer material or directly to a print medium is carried out without film formation on the photoconductor.
Owner:HEWLETT PACKARD DEV CO LP
Core-shell type tertiary carbon redispersible latex powder and preparation method thereof
ActiveCN110294825ARigidFlexibleAntifouling/underwater paintsPaints with biocidesVitrificationColloid
The invention discloses a core-shell type tertiary carbon redispersible latex powder and a preparation method thereof. The core-shell type tertiary carbon redispersible latex powder is prepared from atertiary carbon polymer emulsion, a protective glue and an anti-caking agent through spraying and drying, wherein the tertiary carbon polymer emulsion is a core-shell type tertiary carbon polymer emulsion which is obtained by copolymerizing vinyl versatate and other monomers; the glass transition temperature Tg of a shell layer is lower than or equal to 5 DEG C; the glass transition temperature Tg of a core layer is higher than or equal to 13 DEG C. The core-shell type tertiary carbon redispersible latex powder can be used for producing environment-friendly coatings with high property and zero VOC (volatile organic compounds) without filming additives.
Owner:河北四友卓越科技有限公司
Biodegradable polymer composite with high thermal conductivity and preparation method thereof
The invention discloses a biodegradable polymer composite with high thermal conductivity. The biodegradable polymer composite comprises heat-conducting nanofiller and a biodegradable polymer with a shape memory characteristic, wherein the heat-conducting nanofiller is arranged in the biodegradable polymer in order. The heat-conducting nanofiller without chemical modification is mixed with the biodegradable polymer, by use of the shape memory characteristic of the polymer, the heat-conducting nanofiller is arranged in order by stretch induced self-assembly, meanwhile, the heat-conducting nanofiller arranged in order is used as a physical crosslinking site to maintain the orientation state of the material, after the obtained material is heated secondarily, the filler still keeps high orientation, a constructed orientated structure facilitates lap joint of an ordered filler network with a small quantity of heat-conducting nanofiller, so that the production cost is reduced, the material density is reduced, the strength and ductility of the material are enhanced, and the thermal conductivity of the material is improved.
Owner:HUAZHONG UNIV OF SCI & TECH
Use of polyurethane powder as inner additive of redispersible polymer powder
ActiveUS20140288202A1High bonding strengthMinimize water infiltrationPlastic recyclingAdhesiveWater insoluble
A powdered polyurethane, preferably a powdered recycled polyurethane rigid foam is co-dried with a water insoluble film-forming polymer to obtain a redispersible polymer powder composite for use in hydraulic binders or cementitious compositions to improve performance of cementitious compositions or mortar, in applications such as cement based the adhesives (CBTA), or external thermal insulating composite systems (ETICS).
Owner:THE DOW CHEM CO
Polyurethane powder blend with redispersible polymer powder for cement compositions
InactiveUS20140275307A1Improve adhesionFacilitate redispersionDrilling compositionAdhesiveWater immersion
Powdered polyurethane flexible foams, preferably powdered recycled polyurethane flexible foams are used with a redispersible polymer powder (RDP), preferably as a preblended additive, in hydraulic binders or cementitious compositions to improve performance of cementitious compositions or mortar, in applications such as cement based tile adhesives (CBTA), or external thermal insulating composite systems (ETICS). The use of the powdered polyurethane flexible foam as a partial replacement for an RDP unexpectedly provides an increase in wet mortar density while maintaining excellent workability and quick open time, quicker setting times, improved impact resistance, and increased adhesion after water immersion.
Owner:DOW GLOBAL TECH LLC
Stabilized aqueous dispersion of fluoropolymer
InactiveUS20040171726A1Reduced half-lifeLong half-lifeFibre treatmentSpecial tyresPolymer scienceFluoropolymer
The present invention relates to a stabilized fluoropolymer aqueous dispersion, wherein the stabilizer is polysiloxane polyoxyethylene copolymer preferably having a cloud point of no greater than 25° C.
Owner:EI DU PONT DE NEMOURS & CO
Preparation method of reversible agglomeration and re-dispersion latex based on amidine compound
The invention discloses a preparation method of a reversible agglomeration and re-dispersion latex based on an amidine compound. In the preparation method, an amidine-containing compound is used as a copolymerization monomer or a reactive emulsifier, a chain transfer agent, an initiator and other additives to be applied in the emulsion polymerization of radically polymerizable monomers to preparea stable polymer latex, wherein the amidine group is firmly bonded on the surfaces of latex particles by virtue of covalent bonds. The agglomeration of the latex particles of the latex is realized byheating and introducing nitrogen gas or adding a small amount of base solution, and the agglomerated latex particles can be dispersed by introducing carbon dioxide gas to obtain the stable latex. Theagglomeration and re-dispersion process is reversible and easy to control.
Owner:ZHEJIANG UNIV
Use of polyurethane powder as inner additive of redispersible polymer powder
A powdered polyurethane, preferably a powdered recycled polyurethane rigid foam is co-dried with a water insoluble film-forming polymer to obtain a redispersible polymer powder composite for use in hydraulic binders or cementitious compositions to improve performance of cementitious compositions or mortar, in applications such as cement based the adhesives (CBTA), or external thermal insulating composite systems (ETICS).
Owner:THE DOW CHEM CO
A kind of dehydrogenation catalyst with silica as carrier and preparation method thereof
ActiveCN103785411BRestore fastInhibition decreasedHydrocarbonsMetal/metal-oxides/metal-hydroxide catalystsActive componentDehydrogenation
The invention discloses a dehydrogenation catalyst, which uses silica as a carrier, Pt as a dehydrogenation active component, Sn as a first aid, one or more metal of Cu, Fe, Co and Ni other as a second aid; and the catalyst comprises 0.1%-2% of the dehydrogenation active component, and calculated by the weight of the carrier 0.1-10 wt% of the first aid and 0.1-10 wt% of the second aid. A preparation method of the dehydrogenation catalyst is as below: loading the first aid Sn and the second aid, which is one or more selected from Cu, Fe, Co and Ni, and the active component Pt, by using silica gel as the carrier through an immersion method. This method can substantially increase the activity and stability of the catalyst and selectivity of alkene.
Owner:CHINA PETROLEUM & CHEM CORP +1
Regeneration method of inactivated propane dehydrogenation catalyst
ActiveCN112536064ARestore performanceIncrease profitMolecular sieve catalystsMolecular sieve catalystPtru catalystPhysical chemistry
The invention relates to the field of catalysts, and particularly provides a regeneration method of a deactivated propane dehydrogenation catalyst, which comprises the following steps of: (a) coolinga deactivated dehydrogenation catalyst subjected to propane dehydrogenation reaction to 300-500 DEG C in an inert gas atmosphere, and carrying out regeneration treatment in a weak oxidizing gas atmosphere at the temperature; (b) continuing to cool to 200-300 DEG C in an inert gas atmosphere, and carrying out regeneration treatment in a mixed gas atmosphere containing at least two of oxygen, watervapor and inert gas at the temperature; and (c) after the step (b) is finished, replacing the mixed gas with inert gas until the temperature is reduced to 50-100 DEG C in an inert atmosphere, and carrying out regeneration treatment at the temperature in the presence of organic matters; wherein the dehydrogenation catalyst is a catalyst containing noble metal. The method can effectively recover theperformance of the catalyst and improve the utilization rate of the catalyst.
Owner:CHINA PETROLEUM & CHEM CORP +1
Insecticidal formulations with improved long-term effect on surfaces
ActiveUS8815269B2Simple processFacilitate redispersionBiocideDead animal preservationToxicologyArthropod
The present invention relates to compositions for the control of pests, in particular insecticidal suspension concentrates and spray solutions made from them, to processes for their preparation, and to the use of such formulations for the sustained control of animal pests (arthropods) on a variety of surfaces. The present invention furthermore relates to the use of certain polymer dispersions in pesticides, in particular to their use for extending the long-term activity of these compositions when they are applied to surfaces. The present invention furthermore relates to the use of the compositions according to the invention for controlling parasites, in particular ectoparasites, in animals.
Owner:DISCOVERY PURCHASER CORP
A kind of preparation method of aqueous solution redispersible cellulose nanofibril
Owner:QILU UNIV OF TECH
Method for manufacturing a composition comprising microfibrillated cellulose
ActiveUS20210062418A1High strengthEfficient retention systemPulp properties modificationPaper/cardboardCelluloseFiber
The invention discloses a method to form a composition, which method includes fibrillating fibers to form MFC in the presence of an alkali-metal silicate whereby an MFC and silicate mixture is formed The presence of alkali-metal silicate during fibrillation of fibers to MFC, reduces the viscosity and increases the water release behavior, whereby the fibrillation can be accomplished at higher concentrations and a more uniform mixture of MFC-silicate is accomplished. The composition formed by the method of the invention may e.g. be used in paper or paperboard production, in cement production or as an additive in composites.
Owner:STORA ENSO OYJ
A kind of regeneration method of deactivated propane dehydrogenation catalyst
ActiveCN112536064BRestore performanceIncrease profitMolecular sieve catalystsMolecular sieve catalystPtru catalystWater vapor
Owner:CHINA PETROLEUM & CHEM CORP +1
A kind of copolymerized nanocomposite material and its preparation method and application
ActiveCN111073198BUniform dispersionUniform high temperature resistanceDrilling compositionPolymer scienceNanoparticle
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
A preparation method and application method of a highly dispersed copper-zinc catalyst for carbon dioxide reduction
ActiveCN109746022BImprove stabilityPrevent sinteringCatalyst activation/preparationCarbon monoxidePtru catalystCopper oxide nanoparticles
The invention proposes a method for preparing and using a highly dispersed copper-zinc catalyst for carbon dioxide reduction. The method first synthesizes copper oxide nanoparticle precursors with uniform particle size, and then prepares copper oxide composite nanomaterials coated with ZIF-8 MOFs through liquid phase synthesis, and obtains nitrogen-doped carbon skeleton-coated composite nanomaterials after temperature-programmed calcination. Highly dispersed copper zinc catalyst. The feature of the present invention is that the method adds copper oxide nanoparticles in the process of preparing MOFs material ZIF-8, so that the copper oxide nanoparticles are evenly loaded in MOFs in situ, and the highly dispersed carbon skeleton coating is obtained after high-temperature calcination. At the same time as zinc, the reduction and redispersion of copper are also realized, and there are also a large amount of pyridine nitrogen in the carbon skeleton. A new preparation technology for highly dispersed copper-zinc catalysts supported by pyridine nitrogen doped carbon skeletons has been developed, and the The catalyst is used in the hydrogenation reduction reaction of carbon dioxide to prepare carbon monoxide, and has excellent catalytic activity. The highly dispersed copper-zinc active sites and the presence of a large amount of pyridinic nitrogen can greatly promote the improvement of catalytic activity.
Owner:NANKAI UNIV
A kind of high thermal conductivity biodegradable polymer composite material and preparation method thereof
ActiveCN110746757BFacilitate redispersionImprove mechanical propertiesPolymer scienceChemical modification
The invention discloses a biodegradable polymer composite with high thermal conductivity. The biodegradable polymer composite comprises heat-conducting nanofiller and a biodegradable polymer with a shape memory characteristic, wherein the heat-conducting nanofiller is arranged in the biodegradable polymer in order. The heat-conducting nanofiller without chemical modification is mixed with the biodegradable polymer, by use of the shape memory characteristic of the polymer, the heat-conducting nanofiller is arranged in order by stretch induced self-assembly, meanwhile, the heat-conducting nanofiller arranged in order is used as a physical crosslinking site to maintain the orientation state of the material, after the obtained material is heated secondarily, the filler still keeps high orientation, a constructed orientated structure facilitates lap joint of an ordered filler network with a small quantity of heat-conducting nanofiller, so that the production cost is reduced, the material density is reduced, the strength and ductility of the material are enhanced, and the thermal conductivity of the material is improved.
Owner:HUAZHONG UNIV OF SCI & TECH
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