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31results about How to "Good liquid permeability" patented technology
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Water-Absorbent Agent Composition and Method for Manufacturing Same
InactiveUS20090215617A1Less-decrease in liquid updrawing propertyGood liquid permeabilityOther chemical processesPolymer scienceAcid water
A subject invention provides a water-absorbent agent composition superior in both liquid permeability and liquid updrawing property, which are conventionally incompatible. Moreover, the water-absorbent agent composition according to the present invention causes less decrease in liquid updrawing property. The water-absorbent agent composition according to the present invention contains as a main component a polycarboxylic acid water-absorbent agent having a crosslinking structure which is produced by polymerizing an acid-group-containing unsaturated monomer, the water-absorbent agent composition containing water-insoluble organic or inorganic fine particles, the water-absorbent agent composition satisfying the following set of conditions (a) through (e): (a) decreasing rate of a liquid distribution velocity (LDV) is not more than 30%; (b) saline flow conductivity (SFC) is not less than 60 (Unit: 10−7 cm3 s / g); (c) mass average particle diameter (D50) is 200 to 420 m; (d) logarithm standard deviation (σζ) of particle size distribution is 0.25 to 0.40; and (e) percentage of particles less than 150 μm in diameter is not more than 3 mass % with respect to the whole particle amount.
Owner:NIPPON SHOKUBAI CO LTD
Super absorbent polymer
InactiveUS20170189575A1Good body shapeGood liquid permeabilityOther chemical processesAbsorbent padsCross-linkSuper absorbent
The present invention relates to a super absorbent polymer which exhibits totally well-balanced and excellent physical properties through the optimization of a centrifuge retention capacity, an absorbency under pressure, a liquid permeability and a gel strength. Such a super absorbent polymer is a super absorbent polymer comprising a cross-linked polymer in which a base polymer in the form of a powder obtained by polymerizing water-soluble ethylene-based unsaturated monomers having an acidic group in which at least a part thereof is neutralized is subjected to a surface crosslinking, and a centrifuge retention capacity (CRC), an absorbency under pressure (AUP), a liquid permeability (physiological saline solution flow conductivity; SFC), a horizontal gel strength (G′) or the like can satisfy a predetermined relationship of formula.
Owner:LG CHEM LTD
Superabsorbent polymer composition
ActiveUS20160235882A1Good liquid permeabilityGood storage stabilityAbsorbent padsBandagesSuperabsorbent polymerPotty training
A superabsorbent polymer which has excellent initial absorbency and keeps water from flowing out under pressure even after the passage of a long period of time, in which the superabsorbent polymer keeps water from flowing out under pressure even after the passage of a long period of time to exhibit excellent absorbency, and also has an anti-caking property under conditions of high temperature and high humidity to improve storage stability, is provided. The superabsorbent polymer composition of the present invention may be used to improve physical properties of a variety of diapers, potty training pants, incontinence pads, etc., thereby being applied to production of personal absorbent hygiene products having high absorbency and excellent storage stability under conditions of high temperature and high humidity.
Owner:LG CHEM LTD
Diaphragm paper, and preparation method and application thereof
ActiveUS20160049627A1Small apertureImprove isolationNatural cellulose pulp/paperSpecial paperEngineeringElectrolyte
Diaphragm paper, and a preparation method and an application thereof. The diaphragm paper comprises a first layer, a second layer, and a third layer, wherein the second layer is located between the first layer and the third layer; the first layer and the third layer are loose layers, of which the average aperture is larger than 10 μm and the basis weight is 5 to 30 g / m2; and the second layer is a compact layer, of which the average aperture is smaller than 5 μm and the basis weight is 2 to 15 g / m2. The compact layer has small aperture and good insulating performance, and is capable of effectively insulating a positive electrode and a negative electrode. The loose layers have good liquid permeability and electrolyte absorptivity, and can guarantee the discharge performance of a battery. The material is further advantageous in having good dimensional stability and being thin, so that a battery can achieve high capacity.
Owner:SOUTH CHINA UNIV OF TECH
Method for producing polyacrylic acid (SALT)-based water absorbing agent, and water absorbing agent
ActiveUS20150210843A1Simple designImprove liquid permeabilityAbsorbent padsBandagesAbsorption ratioALLYL SUCROSE
The present invention relates to an absorbent suitable for use in a thin sanitary material / absorbent article having a high absorbent content and not prone to gel blocking, the absorbent having excellent liquid diffusibility (e.g. SFC) and minimal decrease in absorption ratio under pressure (e.g., AAP or PUP) even when a liquid permeation enhancer is added, and to a method for manufacturing the high-performance absorbent stably during actual production. The method is a method for manufacturing a polyacrylic acid (salt)-based absorbent, having a surface-crosslinking agent addition step for adding a solution of a surface-crosslinking agent, and a liquid permeation enhancer addition step for adding a liquid permeation enhancer, the liquid permeation enhancer addition step being performed after and / or at the same time as the surface-crosslinking agent addition step, the method characterized in that a surface crosslinking step for performing heat treatment in an atmosphere having a dew point of 45° C. to 100° C. is performed after or at the same time as the surface-crosslinking agent addition step.
Owner:NIPPON SHOKUBAI CO LTD
Resist film removing method
InactiveUS20070082496A1Efficient removalGood liquid permeabilityLighting and heating apparatusSemiconductor/solid-state device manufacturingResistEngineering
A resist film removing method for removing a resist film disposed on a substrate and having a cured layer at a surface includes covering the surface of the resist film with a protection film; causing popping in the resist film covered with the protection film; denaturing the resist film and the protection film after causing popping, to be soluble in water; and performing purified water cleaning to remove from the substrate the resist film and the protection film denatured to be soluble in water.
Owner:TOKYO ELECTRON LTD
Water-absorbing agent having water-absorbent resin as a main component and production method of the water-absorbing agent
ActiveUS20090281232A1High pore volumeGood liquid permeabilityEmulsion paintsAqueous solutionUnsaturated monomer
To provide (i) a water-absorbing agent, having a water-absorbent resin as a main component, whose absorbency is high and liquid permeability is enhanced and (ii) a production method thereof. The water-absorbing agent of the present invention includes a water-absorbent resin obtained by polymerizing an unsaturated monomer having a carboxyl group and included in an aqueous monomer solution in the presence of at least a non high molecular compound having four or more functional groups each capable of forming a covalent bond with a carboxyl group.
Owner:NIPPON SHOKUBAI CO LTD
Super absorbent polymer and preparation method thereof
ActiveUS9486778B2Good liquid permeabilityOther chemical processesAbsorbent padsMonomer compositionSuper absorbent
The present invention relates to a super absorbent polymer and a preparation method thereof. The super absorbent polymer includes surface crosslinked polymer particles prepared by surface crosslinking of particles of a base resin, wherein the base resin is polymerized from a monomer composition including water-soluble ethylene-based unsaturated monomers, and a water-soluble component, wherein the water-soluble component has a ratio (dwt / d(log M)) of 0.9 or less over molecular weights (M) ranging from 100,000 to 300,000 when measured from an eluted solution after swelling the super absorbent polymer for 1 hour, and wherein the content of the water-soluble component is 5% by weight or less, based on the total weight of the super absorbent polymer, when measured after swelling the super absorbent polymer for 1 hour. The super absorbent polymer has excellent liquid permeability even when swollen without a reduction in centrifuge retention capacity or absorbency under load while having improved permeability.
Owner:LG CHEM LTD
Separator for lithium ion secondary battery and lithium ion secondary battery provided therewith
InactiveUS7311994B2High and uniform ionic conductivityReduce interfacial resistanceCell seperators/membranes/diaphragms/spacersLi-accumulatorsPolyolefinPorous layer
A separator for a lithium ion secondary battery, comprising a porous base material containing polyolefin, and a porous layer containing a vinylidene fluoride resin as a main component provided on at least one surface of the porous base material is excellent in electrolytic solution retention properties, adhesion and bondability to electrodes, and dimensional stability, and also has high and uniform ionic conductivity, reduced interfacial resistance to electrodes, and shutdown properties. A lithium ion secondary battery having excellent capacity characteristics, charge and discharge characteristics, cycle characteristics, safety and reliability can be provided by using the separator.
Owner:SUMITOMO CHEM CO LTD
Nonaqueous electrolyte secondary battery
InactiveUS20110223490A1Suppresses self-dischargeImproved cycle life characteristicsCell electrodesOrganic electrolyte cellsDecompositionMethyl carbonate
In the nonaqueous electrolyte secondary battery, the positive electrode active material is composed of a mixture of a lithium-cobalt composite oxide containing at least both zirconium and magnesium, and a lithium-manganese-nickel composite oxide containing at least both manganese and nickel. The nonaqueous electrolyte includes fluoroethylene carbonate and dimethyl carbonate as a nonaqueous solvent and further includes an additive expressed by General Formula (1), which having a capability to form an SEI surface film, and a higher oxidation resistance than that of VC. Thus, the negative electrode active material is unlikely to react with the organic solvent. Therefore, decomposition of the organic solvent is suppressed. Thus the battery having a long cycling life even when it is charged at a positive electrode charging potential of 4.4 to 4.6 V based on lithium and having a high residual capacity after storage at high temperature in a charged state is provided.
Owner:SANYO ELECTRIC CO LTD
Non-aqueous electrolyte secondary cell
InactiveUS20140023915A1Good liquid permeabilityExcellent characteristicsCell seperators/membranes/diaphragms/spacersCell electrodesPorosityLithium compound
The present invention aims to productively provide a non-aqueous electrolyte secondary cell having high capacity. This object can be achieved by adopting the following configuration. A non-aqueous electrolyte secondary cell comprises a non-aqueous electrolyte and an electrode assembly having a positive electrode, a negative electrode and a separator; the positive electrode has a positive electrode core and a positive electrode active material layer; the negative electrode has a negative electrode core and a negative electrode active material layer; a protective layer is provided on the positive electrode active material layer and / or the negative electrode active material layer; the total thickness of the protective layers is 10 to 40% of that of the separator; a porosity of the protective layer is larger than that of any of the positive and negative electrode active material layer; and the non-aqueous electrolyte contains a non-aqueous solvent and two or more kinds of lithium compounds.
Owner:SANYO ELECTRIC CO LTD
Water-absorbent resin composition and its production process
ActiveUS8247491B2Little gel-blockingGood liquid permeabilityNon-fibrous pulp additionOther chemical processesLiquid diffusionWater soluble
Owner:NIPPON SHOKUBAI CO LTD
Super absorbent polymer
InactiveCN106459265AGood liquid permeabilityWell balanced and excellent physical propertiesAbsorbent padsBandagesCross-linkPolymer science
The present invention relates to a super absorbent polymer which generally exhibits balanced and superior physical properties through the optimization of retention capacity, absorption under pressure, liquid permeability, and gel strength. This super absorbent resin comprises a cross-linked polymer obtained by surface cross-linking a powder type base resin prepared by polymerizing water-soluble ethylene-based unsaturated monomers having an acidic group of which at least a portion is neutralized, and the centrifuge retention capacity (CRC), absorption under pressure (AUP), gel strength (G'), and saline flow conductivity (SFC), of the super absorbent resin can satisfy predetermined relational expressions.
Owner:LG CHEM LTD
Water-absorbing agent having water-absorbent resin as a main component and production method of the water-absorbing agent
ActiveUS9309375B2High pore volumeGood liquid permeabilityOther chemical processesEmulsion paintsAqueous solutionUnsaturated monomer
To provide (i) a water-absorbing agent, having a water-absorbent resin as a main component, whose absorbency is high and liquid permeability is enhanced and (ii) a production method thereof. The water-absorbing agent of the present invention includes a water-absorbent resin obtained by polymerizing an unsaturated monomer having a carboxyl group and included in an aqueous monomer solution in the presence of at least a non high molecular compound having four or more functional groups each capable of forming a covalent bond with a carboxyl group.
Owner:NIPPON SHOKUBAI CO LTD
Superabsorbent resin and method for producing same
The present invention relates to a superabsorbent resin exhibiting more improved liquid permeability while maintaining excellent absorption performance, and a method for producing the same. The superabsorbent resin comprises: a base resin powder comprising a first crosslinked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface crosslinked layer formed on the base resin powder and comprising a second crosslinked polymer in which the first crosslinked polymer is further crosslinked through an alkylene carbonate having two to five carbon atoms. The superabsorbent resin satisfies predetermined physical properties.
Owner:LG CHEM LTD
Super absorbent polymer
ActiveUS10285866B2Good liquid permeabilityImprove breathabilityNon-adhesive dressingsAbsorbent padsPolymer scienceSuper absorbent
The present invention relates to a super absorbent polymer. The super absorbent polymer according to the present invention includes surface crosslinked polymer particles prepared by surface crosslinking particles of a base resin, wherein the base resin is polymerized from water-soluble ethylene-based unsaturated monomers, and a water-soluble component, in which the water-soluble component is present in an amount of 5% by weight or less based on the total weight of the super absorbent polymer, when measured after free swelling the super absorbent polymer in a 0.9% NaCl solution for 1 hour, and the super absorbent polymer has a permeability of 50 seconds or shorter. According to the present invention, provided is a super absorbent polymer having excellent liquid permeability even when swollen without a reduction in centrifuge retention capacity or absorbency under load while having improved permeability.
Owner:LG CHEM LTD
Super absorbent polymer and preparation method thereof
ActiveUS20160030921A1Good liquid permeabilityOther chemical processesAbsorbent padsMonomer compositionSuper absorbent
The present invention relates to a super absorbent polymer and a preparation method thereof. The super absorbent polymer includes surface crosslinked polymer particles prepared by surface crosslinking of particles of a base resin, wherein the base resin is polymerized from a monomer composition including water-soluble ethylene-based unsaturated monomers, and a water-soluble component, wherein the water-soluble component has a ratio (dwt / d(log M)) of 0.9 or less over molecular weights (M) ranging from 100,000 to 300,000 when measured from an eluted solution after swelling the super absorbent polymer for 1 hour, and wherein the content of the water-soluble component is 5% by weight or less, based on the total weight of the super absorbent polymer, when measured after swelling the super absorbent polymer for 1 hour. The super absorbent polymer has excellent liquid permeability even when swollen without a reduction in centrifuge retention capacity or absorbency under load while having improved permeability.
Owner:LG CHEM LTD
Hydrophilizing agent for hydrophobic porous membrane, and method for hydrophilizing hydrophobic porous membrane and test method using this agent
ActiveUS7882962B2Reduce the amount requiredSimple methodSemi-permeable membranesFiltration separationHydrophilizationPorous membrane
A hydrophilizing agent for a hydrophobic porous membrane, wherein the agent contains a surfactant, and the surfactant has a frothability such that the bubble height immediately after frothing, as measured according to the Ross-Miles method (JIS K 3362), using a 0.1 wt % aqueous solution of the surfactant at 25° C., is 40 mm or less, and preferably has a frothability such that the bubble height five minutes after frothing is 20 mm or less; a method for hydrophilizing a hydrophobic porous membrane using this hydrophilizing agent; and a method for testing and hydrophilizing a membrane module using this hydrophilizing agent.
Owner:MITSUBISHI CHEM CORP
Liquid container with variable extraction chimney
ActiveUS20080299011A1Improve throughputGood liquid permeabilityBottlesAnalysis by subjecting material to chemical reactionEngineeringMechanical engineering
A liquid container having a top opening, a base, and an extraction chimney which extends into the container and which is in alignment with the top opening is presented. The extraction chimney is intended for the withdrawal of liquid by a liquid-withdrawal element that is introduced into the liquid container through the extraction chimney. The extraction chimney has a liquid-permeable zone in its bottom region, adjacent to the liquid container base. The liquid permeability of the liquid-permeable zone of the extraction chimney can be adjusted between a setting for minimal liquid permeability and a setting for greater liquid permeability. The extraction chimney can be adjusted while the extraction chimney remains in the liquid container.
Owner:ROCHE DIAGNOSTICS OPERATIONS INC
Intelligent diaper
InactiveUS20190290500A1Quickly and correctly determiningShorten the timeVaccination/ovulation diagnosticsDiagnostic recording/measuringBarcodeColor calibration
An intelligent diaper includes an inner layer configured to be substantially liquid-pervious; a transparent outer layer configured to be substantially liquid-impervious; a middle layer disposed between the inner layer and the transparent outer layer and configured to absorb liquid from a diaper wearer's body; a core member disposed between the transparent outer layer and the middle layer, and the core member including an identification zone having a 2D barcode, a color calibration zone, and a test zone having two spaced test paper strips; urine indication strips disposed between the transparent outer layer and the middle layer and being adjacent to the core member; a negative comparison zone having two spaced negative color comparison cards; and a positive comparison zone having two spaced positive color comparison cards. Color of the urine indication strips changes in response to expelled waste.
Owner:SHENZHEN GAOXIN MEDICAL TECH CO LTD
Resist film removing method
InactiveUS7691210B2Efficient removalGood liquid permeabilityLighting and heating apparatusSemiconductor/solid-state device manufacturingTectorial membraneResist
A resist film removing method for removing a resist film disposed on a substrate and having a cured layer at a surface includes covering the surface of the resist film with a protection film; causing popping in the resist film covered with the protection film; denaturing the resist film and the protection film after causing popping, to be soluble in water; and performing purified water cleaning to remove from the substrate the resist film and the protection film denatured to be soluble in water.
Owner:TOKYO ELECTRON LTD
Water-soluble cutting/grinding fluid
ActiveUS10479917B2Good liquid permeabilityDiffusibility is so goodHeat-exchange elementsAdditivesWater solubleSURFACTANT BLEND
The present invention addresses the problem of providing a water-soluble cutting or grinding fluid that has excellent permeability and washability, that can be widely used in cutting or grinding, and that is particularly suitable for use in superfinishing. The present invention provides a water-soluble cutting or grinding fluid that contains a glycol compound (A), at least one substance (B) selected from the group consisting of organic amines and inorganic alkalis, a surfactant (C), and water (D), the water-soluble cutting or grinding fluid having a contact angle of 2 to 15° as measured using the θ / 2 method one second after a drop of a dilution of the water-soluble cutting or grinding fluid is dropped on an SPCC-SB plate.
Owner:NTN CORP
Method for preparing agonist for improving boar sperm motility
InactiveUS20200270580A1Improving artificial inseminationEasy to produceCulture processVaccination/ovulation diagnosticsCell culture mediaHyaluronidase
A method for preparing an agonist for improving boar sperm motility includes: (1) collecting and infiltrating a testicular tissue of a young boar 3-5 days after born; (2) washing the tissue with PBS; (3) incubating the tissue in a cell culture medium, and centrifuging the cell suspension to remove a supernatant; (4) adding hyaluronidase and collagenase IV followed by shaking, and adding the cell culture medium and centrifuging to remove a supernatant; (5) adding trypsin and deoxyribonuclease followed by shaking, and adding the cell culture medium; (6) filtering the cell suspension by a cell sieve; (7) centrifuging to remove a supernatant, and adding the cell culture medium; (8) culturing and passaging the cells; (9) culturing and storing the cell suspension. The invention has the advantages of good application effect, low cost and simple production process.
Owner:QINGDAO AGRI UNIV
Diaphragm paper, and preparation method and application thereof
ActiveUS10103373B2Small apertureImprove isolationSpecial paperWater-repelling agents additionEngineeringElectrolyte
Diaphragm paper, and a preparation method and an application thereof. The diaphragm paper comprises a first layer, a second layer, and a third layer, wherein the second layer is located between the first layer and the third layer; the first layer and the third layer are loose layers, of which the average aperture is larger than 10 μm and the basis weight is 5 to 30 g / m2; and the second layer is a compact layer, of which the average aperture is smaller than 5 μm and the basis weight is 2 to 15 g / m2. The compact layer has small aperture and good insulating performance, and is capable of effectively insulating a positive electrode and a negative electrode. The loose layers have good liquid permeability and electrolyte absorptivity, and can guarantee the discharge performance of a battery. The material is further advantageous in having good dimensional stability and being thin, so that a battery can achieve high capacity.
Owner:SOUTH CHINA UNIV OF TECH
Water-absorbent resin composition, method of manufacturing the same, and absorbent article
A water-absorbent resin composition is provided which shows only small reduction in liquid permeability and limited coloring over time or in relation to another factor. The water-absorbent resin composition (particulate absorbent agent) of the present invention contains: a polycarboxylate-based water-absorbent resin as a primary component, the resin having a crosslinked structure formed by polymerization of an acid group-containing unsaturated monomer; and multivalent metal cations (preferably, on surfaces of particles (i.e., the water-absorbent resin composition)) wherein: the multivalent metal cations other than Fe cations account for 0.001 to 1 mass % of the water-absorbent resin; and the ratio (in terms of percentage) of the Fe cations to the multivalent metal cations other than the Fe cations is less than or equal to 5.00 mass %.
Owner:NIPPON SHOKUBAI CO LTD
Superabsorbent polymer composition
ActiveUS10960102B2Good liquid permeabilityGood storage stabilityAbsorbent padsBandagesPolymer scienceHigh humidity
A superabsorbent polymer which has excellent initial absorbency and keeps water from flowing out under pressure even after the passage of a long period of time, in which the superabsorbent polymer keeps water from flowing out under pressure even after the passage of a long period of time to exhibit excellent absorbency, and also has an anti-caking property under conditions of high temperature and high humidity to improve storage stability, is provided. The superabsorbent polymer composition of the present invention may be used to improve physical properties of a variety of diapers, potty training pants, incontinence pads, etc., thereby being applied to production of personal absorbent hygiene products having high absorbency and excellent storage stability under conditions of high temperature and high humidity.
Owner:LG CHEM LTD
Superabsorbent polymer and method for its preparation
The present invention relates to a superabsorbent polymer exhibiting more improved liquid permeability while maintaining excellent absorbency and a method for producing the same. The superabsorbent polymer comprises: a base polymer powder comprising a first crosslinked polymer of water-soluble ethylenically unsaturated monomers having at least partially neutralized acid groups; and a surface crosslinked layer, It is formed on a base polymer powder and comprises a second crosslinked polymer in which the first crosslinked polymer is further crosslinked by an alkylene carbonate having two to five carbon atoms. The superabsorbent polymer satisfies predetermined physical characteristics.
Owner:LG CHEM LTD
Super Absorbent Polymer
InactiveUS20190167836A1Good body shapeGood liquid permeabilityOther chemical processesAbsorbent padsCross-linkSuper absorbent
Owner:LG CHEM LTD
Method for producing polyacrylic acid (salt)-based water absorbing agent, and water absorbing agent
ActiveUS9518180B2Simple designImprove liquid permeabilityOther chemical processesAbsorbent padsAbsorption ratioALLYL SUCROSE
The present invention relates to an absorbent suitable for use in a thin sanitary material / absorbent article having a high absorbent content and not prone to gel blocking, the absorbent having excellent liquid diffusibility (e.g. SFC) and minimal decrease in absorption ratio under pressure (e.g., AAP or PUP) even when a liquid permeation enhancer is added, and to a method for manufacturing the high-performance absorbent stably during actual production. The method is a method for manufacturing a polyacrylic acid (salt)-based absorbent, having a surface-crosslinking agent addition step for adding a solution of a surface-crosslinking agent, and a liquid permeation enhancer addition step for adding a liquid permeation enhancer, the liquid permeation enhancer addition step being performed after and / or at the same time as the surface-crosslinking agent addition step, the method characterized in that a surface crosslinking step for performing heat treatment in an atmosphere having a dew point of 45° C. to 100° C. is performed after or at the same time as the surface-crosslinking agent addition step.
Owner:NIPPON SHOKUBAI CO LTD
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