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737 results about "Nitrogen adsorption" patented technology
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Nitrogen adsorption is the standard way of characterizing carbon gels, whose microporosity is generally not so narrow for justifying the use of CO2 as a probe molecule.
Porous anode active material, method of preparing the same, and anode and lithium battery employing the same
ActiveUS20080145757A1Efficiently remove stressExcellent charge and discharge characteristicsSilver accumulatorsMaterial nanotechnologyAlloyPore diameter
Provided are a porous anode active material, a method of preparing the same, and an anode and a lithium battery employing the same. The porous anode active material includes fine particles of metallic substance capable of forming a lithium alloy; a crystalline carboneous substance; and a porous carboneous material coating and attaching to the fine particles of metallic substance and the crystalline carboneous substance, the porous anode active material having pores exhibiting a bimodal size distribution with two pore diameter peaks as measured by a Barrett-Joyner-Halenda (BJH) pore size distribution from a nitrogen adsorption. The porous anode active material has the pores having a bimodal size distribution, and thus may efficiently remove a stress occurring due to a difference of expansion between a carboneous material and a metallic active material during charging and discharging. Further, the anode electrode and the lithium battery comprising the anode active material have excellent charge / discharge characteristics.
Owner:SAMSUNG SDI CO LTD
Micro-pore structure evaluation and reservoir classification method for tight reservoirs
InactiveCN105334149ASolve the problem of observationDetermining the cause of densificationEarth material testingPermeability/surface area analysisPorosityFluorescence
The invention provides a micro-pore structure evaluation and reservoir classification method for tight reservoirs. The method comprises steps as follows: the origin and the petrologic features of each reservoir are analyzed, and the phase type, the content and the like of each reservoir are determined; physical features of each reservoir are analyzed; features of a reservoir space of each reservoir are observed, and the pore type, the surface porosity and the like are determined; pore structure parameters of the reservoirs are measured with a high-pressure mercury intrusion method and a nitrogen adsorption method; the diagenesis is researched, and compaction, cementation and corrosion sequences are determined; physical property control factors of the reservoirs are analyzed; the reservoirs are classified. The method mainly has the effects as follows: the diagenesis and the influences of the diagenesis on the reservoirs are comprehensively reflected through cathode luminescence and micro-area mineral quantitative analysis; micro pores of the tight reservoirs are researched elaborately through fluorescent casting and field emission scanning electron microscopy; the microscopic features of the tight reservoirs are determined accurately through high-pressure mercury intrusion experiments and the nitrogen adsorption experiments; the parameters are optimized for classification and evaluation of the reservoirs, and the method has a great significance in further prediction of beneficial developing stratums or zones.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
Preparation method of chitin aerogel
The invention discloses a preparation method of chitin aerogel, comprising the following steps of: immersing a chitin solution into a coagulant, regenerating, washing to obtain chitin hydrogel; displacing water in the chitin hydrogel with an organic liquid to obtain chitin organogel; drying the chitin hydrogel or organogel to remove the liquid so as to obtain the chitin aerogel; carrying out deacetylation on the chitin hydrogel, washing to obtain chitosan hydrogel; displacing water in the chitosan hydrogel with an organic liquid to obtain chitosan organogel; drying the chitosan hydrogel or organogel to remove the liquid so as to obtain chitosan aerogel; and carrying out heat treatment on the chitin and chitosan aerogel over 150 DEG C so as to obtain carbon aerogel. Through a nitrogen adsorption-desorption test, the specific surface area of the chitin aerogel, chitosan aerogel and carbon aerogel reaches 300m<2> / g or more than 300m<2> / g.
Owner:WUHAN UNIV
Rubber composition for tread, and pneumatic tire
ActiveUS20130331498A1Improve wear resistanceImprove wet grip performanceSpecial tyresNitrogenEngineering
Provided are a rubber composition for treads that has both excellent abrasion resistance and good wet grip performance and also offers good fuel economy and elongation at break, and a pneumatic tire (particularly for passenger vehicles and for sport utility vehicles) formed therefrom. The rubber composition includes, based on 100% by mass of a rubber component, 40-75% by mass of BR and 25-55% by mass of SBR; and includes, per 100 parts by mass of the rubber component, 40-120 parts by mass of a silica having a nitrogen adsorption specific surface area of 160-270 m2 / g, and 15-50 parts by mass of a carbon black having a nitrogen adsorption specific surface area of 100-250 m2 / g, wherein a ratio of a total content of silica to a total content of SBR is 0.70-2.50, and a ratio of a total content of carbon black to a total content of BR is 0.25-0.75.
Owner:SUMITOMO RUBBER IND LTD
Agglomerated adsorbent, process for the production thereof and use thereof for the non-cryogenic separation of industrial gases
InactiveUS6652626B1Reduce the burden onReduce consumptionIsotope separationHydrogen/synthetic gas productionLithiumIndustrial gas
A description is given of agglomerates of faujasite X with an Si / Al ratio of 1, the inert binder of which, on the one hand, has been converted to active zeolite by conversion to zeolite in an alkaline liquor, and which have been subjected, on the other hand, to an exhaustive lithium exchange. These adsorbents develop a nitrogen adsorption capacity (1 bar / 25° C.) of at least 26 cm<3> / g, which makes them excellent adsorbents for the non-cryogenic separation of gases from air and for the purification of hydrogen.
Owner:ARKEMA FRANCE SA
Active carbon fiber organic gas recovery method and system using nitrogen as desorption medium
InactiveCN101288820AReduce water contentAchieving zero emissionsDispersed particle separationCombustible gas purificationSolubilityFiber
The invention relates to a method for recovering active carbon fibre organic waste gas by taking nitrogen as desorption medium, belonging to the field of environmental protection. The method for recovering active carbon fibre organic waste gas by taking nitrogen as desorption medium takes the active carbon fibre as a fixed bed adsorber of the adsorbent, adopts thermal nitrogen desorption and can recover and reuse the organic waste gas and nitrogen at the same time. The method of the invention adopts the thermal nitrogen adsorption, generates no secondary contaminant, realizes that the exhaust reaches the standard of the environmental protection, leads the adsorption layer to keep dry at the same time, improves the utilization ratio of the active carbon fibre and prolongs the service life of the active carbon fibre. As vapour is not used for desorption, the equipment has no corrosion problem, thus greatly reducing the manufacture cost of the equipment. The method of the invention has extremely good recovery effects on solvent with large water solubility and easy hydrolysis performance and organic waste gas with high boiling point, has low water content in the recovered products, high quality of the solvent and reduces the running cost.
Owner:中节能天辰(北京)环保科技有限公司
Carbonaceous electrode material for secondary battery and process for production thereof
InactiveUS6303249B1Small non-dedoping capacityLarge capacityNon-aqueous electrolyte accumulator electrodesLi-accumulatorsPotassiumSolvent
A carbonaceous electrode having improved capacities for doping and dedoping of a cell active substance, such as lithium, and suitable for a non-aqueous solvent-type secondary battery, is constituted by a carbonaceous material having a pore volume of at least 0.55 ml / g of pores having a pore diameter of at most 5 mum as measured by mercury injection method, a potassium content of at most 0.5 wt. % as measured by fluorescent X-ray analysis, and a specific surface area of at most 100 m2 / g as measured by nitrogen adsorption BET method. The carbonaceous material is advantageous produced by carbonizing a carbon precursor of plant origin having a potassium content of at most 0.5 wt. % as measured by fluorescent X-ray analysis, in contact with a stream of an inert gas optionally containing a halogen gas at a temperature of 700-1500° C.
Owner:KUREHA KAGAKU KOGYO KK
Low density cements for use in cementing operations
InactiveUS20080066655A1Inhibit migrationImprove responseSolid waste managementDrilling compositionSilica fumeNitrogen adsorption
A cement mix which is suitable for cementing in subterranean formations to provide zonal isolation or for blocking or plugging an abandoned pipeline or back filling a mine shaft, tunnel or excavation contains Portland cement or a mixture of two components selected from Portland cement, fly ash, slag, silica fume, gypsum, limestone and bentonite; and diatomaceous earth, preferably having a BET nitrogen adsorption specific surface area between from about 30 to about 100 m2 / g. The cement mix may further contain an alkali metasilicate and / or alkali silicate, zeolite and / or aluminum silicate, an accelerator, such as an inorganic salt, and / or an alkaline metal oxide, as well as a lightweight density modifying agent, including glass, ceramic or plastic spheres. A cementitious slurry, formulated from the cement mix, has a density less than or equal to 1500 kg / m3 and exhibits good compressive strength.
Owner:BAKER HUGHES INC
Carbonaceous electrode material for non-aqueous secondary battery
InactiveUS6335122B1Large de-doping capacityLarge doping and de-doping capacityNon-aqueous electrolyte accumulatorsActive material electrodesElement analysisVolumetric Mass Density
A carbonaceous electrode having improved capacities for doping and dedoping of a cell active substance, such as lithium, and suitable for a non-aqueous solvent secondary battery, is constituted by a carbonaceous material having a true density as measured by a butanol substitution method of at most 1.46 g / cm3, a true density as measured by a helium substitution method of at least 1.7 g / cm3, a hydrogen-to-carbon atomic ratio H / C of at most 0.15 as measured according to elementary analysis, a BET specific surface area of at most 50 m2 / g as measured by nitrogen adsorption BET method, and a carbon dioxide adsorption capacity of at least 10 ml / g. The carbonaceous material is advantageously produced by carbonizing an organic material originated from bamboo genera of family Gramineae, particularly genus Pleioblastus or Bambusa, at 1000-1400° C. under a reduced pressure or under a flowing inert gas stream to provide an appropriate porous structure.
Owner:TOHOKU MURATA MFG CO LTD +1
Fine pore formation agent for porous resin film and composition containing the same for porous resin film
ActiveUS20090030100A1Uniform diameterDiameter is limitedCalcium/strontium/barium carbonatesSynthetic resin layered productsElectrical batteryInorganic particles
A fine pore formation agent for a porous resin film is provided which comprises inorganic particles satisfying (a) 0.1≦D50≦1.5 (μm) (D50: average particle diameter of particles in 50% cumulative total by weight from the larger particle side by micro-track FRA), (b) Da≦20 (μm) (Da: maximum particle diameter by micro-track FRA), (c) 3≦Sw≦60 (m2 / g) (Sw: BET specific surface area measured by nitrogen adsorption method), (d) Ir≦1.0×105 (Ω·cm) (Ir: volume resistivity (Ω·cm).The fine pore formation agent for a porous resin film is capable of providing a resin composition giving a porous resin film useful in uses for electric parts such as capacitors and battery separators.
Owner:MARUO CALCIUM COMPANY +1
Enhanced negative plates for lead acid batteries
InactiveUS20100015531A1Reduced paste densityIncreased BET surface areaLead-acid accumulatorsLead-acid accumulator electrodesActivated carbonLead oxide
A paste for negative plate of lead acid battery is disclosed that has a reduced paste density, yet provides a negative plate with substantially increased BET surface area and consequently the battery with enhanced performance. The disclosed paste comprises an activated carbon additive having a mesopore volume of greater than about 0.1 cm3 / g and a mesopore size range of about 20 angstroms to about 320 angstroms as determined by DFT nitrogen adsorption isotherm. The cured negative plate made of the disclosed paste has a BET surface area of about 9 m2 / g and 19 m2 / g when the carbon loading level of the paste is about 1% and 2% weight, respectively relative to dry paste lead oxide. The battery including the negative plate made of the disclosed paste maintains the performance such as charge capacity and cycle life, despite containing less lead.
Owner:MEADWESTVACO CORP
Method for determining contribution of pores with different apertures in shale reservoir stratum to porosity
InactiveCN103512838AAchieving precise measurementsEasy to operatePermeability/surface area analysisPorosityAnalysis data
The invention discloses a method for determining contribution of pores with different apertures in a shale reservoir stratum to porosity, and belongs to the technical field of petroleum, geology and mining exploration and development. The method comprises the following steps: selecting three groups of parallel samples from shale reservoir stratum samples at the same depth; carrying out a low-temperature nitrogen adsorption-desorption experiment on the first group of samples to determine contribution of the pores with aperture ranging from 0.4-100 nm to the porosity; carrying out argon ion polishing and electron scanning microscope examination on the second group of samples to determine the contribution of the pores with aperture ranging from 50 nm to 3 microns to the porosity; carrying out mercury intrusion analysis on the third group of samples to determine the contribution of the pores with aperture greater than 1000 nm to the porosity; synthesizing the analytic data of the three groups of parallel samples, and obtaining the determination results of contribution of the pores with different apertures in the shale reservoir stratum to the porosity. The method can determine the contribution of the pores with different apertures in the shale reservoir stratum to the porosity, and overcomes the defect of the conventional gas adsorption method and the mercury intrusion method for determining the contribution of the pores with different apertures in the shale reservoir stratum to the porosity.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Method for preparing aerobiotic nitrifier immobilizing vector
InactiveCN103013973ALarge specific surface areaImprove adsorption capacityWater contaminantsOn/in organic carrierMicroorganismNitrogen removal
The invention discloses a method for preparing an aerobiotic nitrifier immobilizing vector, and belongs to the field of water treatment. The method comprises the steps of: firstly, carrying out acid washing on thermally modified attapulgite; adsorbing the nitrifier using the nanometer grade attapulgite; carrying out rapid inclusion by using the mixture gel of polyvinyl alcohol (PVA) and sodium alginate (SA); dropping the mixture into a crosslinking agent to soak for 24 hours using a granulator to obtain an immobilized nitrifier pellet; and finally, repeatedly washing the immobilized nitrifier pellet for three times using normal saline to obtain a vector particle. By taking advantage of pretty large specific surface area and pretty strong adsorption performance of the modified attapulgite, an adsorption vector which is conductive to the growth and reproduction of the aerobiotic nitrifier is prepared; the modified attapulgite is capable of ammonia and nitrogen adsorption, and can increase the ammonia and nitrogen removal rate in water; the carrier particle composited from the modified attapulgite and a macromolecular material can improve the activity and ammonia and nitrogen removal capacity of denitrification microorganisms; and the repeated use rate of the carrier is high.
Owner:CHANGZHOU UNIV
Rubber composition and tire having tread comprising thereof
InactiveUS20060173118A1Improve rolling resistance performanceReduce fuel consumptionSpecial tyresRolling resistance optimizationRolling resistanceNitrogen
There is provided a rubber composition capable of producing a tire which improves rolling resistance performance, wet skid performance and drivability of a vehicle in good balance, and a tire having a tread comprising thereof. A rubber composition comprising 30 to 150 parts by weight of the total of (1) silica with a nitrogen adsorption specific area of 100 m2 / g or less and (2) silica with a nitrogen adsorption specific area of 180 m2 / g or more based on 100 parts by weight of a rubber component, wherein the content of silica (1) and silica (2) satisfies the following formula, and a tire having a tread comprising thereof: [Content of silica (1)]×0.2≦[content of silica (2)]≦[content of silica (1)]×6.5.
Owner:SUMITOMO RUBBER IND LTD
Shale gas reservoir pore structure quantitative calculation method based on nuclear magnetic resonance
InactiveCN108169099AThe calculation result is accuratePracticalAnalysis using nuclear magnetic resonancePermeability/surface area analysisPore distributionHigh pressure
The invention discloses a shale gas reservoir pore structure quantitative calculation method based on nuclear magnetic resonance. The shale gas reservoir pore structure quantitative calculation methodcomprises the following steps: collecting cores; drilling parallel samples, carrying out oil and water self-adsorption nuclear magnetic resonance experiment measurement; contrastively analyzing the difference of a parallel sample oil and water nuclear magnetic resonance T2 spectrum, and determining the distribution of different wetting pore types on the nuclear magnetic resonance T2 spectrum; obtaining a shale gas reservoir full-pore distribution curve according to high-pressure pressurized mercury, nitrogen adsorption and carbon dioxide adsorption; furthermore, obtaining an intersection plate of pore diameters and corresponding T2 time; and according to the intersection plate of different pore types of pore diameters and corresponding T2 time, establishing a quantitative calculation model of the pore diameters according to the pore types. The method has the advantages that a shale gas reservoir pore full-pore distribution curve can be quantitatively calculated through the technology;simultaneously, the nuclear magnetism measurement is quick, simple and loss-free, and is higher in practicability by compared with high-pressure pressurized mercury, nitrogen adsorption and carbon dioxide adsorption; and compared with a conventional method, the calculation result is more accurate.
Owner:SOUTHWEST PETROLEUM UNIV
Method for preparing molecular sieve absorbent with high adsorption capacity
The invention relates to a method for preparing the absorber of molecule screen, wherein it is characterized in that: it improves the calcium content to prepare the absorber with high adsorption on nitrogen, carbon oxide, oxygen, water, etc. And said method mixes 4A molecule screen with calcium compound, uses caoline as adhesive, compresses, bakes, treats with alkali, exchanges with calcii chloridum solution and activates. The nitrogen adsorption of product can reach 11.5ml / g, and the carbon oxide adsorption can reach 34ml / g, and the skellysolve B adsorption can reach 16%.
Owner:TAIYUAN UNIV OF TECH
Hydrocracking catalyst
ActiveUS7192900B2Large specific surface areaLow unitAluminium compoundsMolecular sieve catalystsNitrogenSilicon dioxide
Hydrocracking catalyst composition comprising an optional metal hydrogenation component supported on a carrier comprising a zeolite of the faujasite structure having a unit cell size in the range of from 24.10 to 24.40 Å, a bulk silica to alumina ratio (SAR) above about 12, and a surface area of at least about 850 m2 / g as measured by the BET method and ATSM D4365-95 with nitrogen adsorption at a p / po value of 0.03.
Owner:SHELL USA INC
Phosphorus slag powder doped dry powdered anti-crack mortar
Owner:TONGJI UNIV
SAPO-34 molecular sieve and synthesis method thereof
ActiveCN101633508AMolecular-sieve and base-exchange phosphatesMolecular-sieve silicoaluminophosphatesHysteresisSynthesis methods
The invention provides an SAPO-34 molecular sieve and a synthesis method thereof. A hysteresis loop is arranged between nitrogen adsorption isotherm and desorption isotherm of the molecular sieve; and a molecular sieve crystal comprises topographies such as hollow shells, holes, concave-convex, cracks, nuclear shells and the like. The molecular sieve is obtained by mixing an aluminum source, a phosphorous source, a silicon source and an organic template agent to form gel and hydrothermally crystallizing the gel for 4 to 500 hours at the temperature of between 100 and 250 DEG C, wherein the organic template agent is added in two steps, one part is added during forming the gel, and the rest is added during hydrothermal crystallization. The molecular sieve is a catalyst of active components, can be used for conversion reaction of oxygenated organic compounds, and also can be used for conversion reaction of hydrocarbons, or used as a hydrogen conversion catalyst of hydrocarbons after supporting metals.
Owner:CHINA PETROLEUM & CHEM CORP +1
Positive electrode for lithium secondary batteries and lithium secondary battery using same
InactiveCN103003983AImprove the performance of the positive electrodeImprove performanceMaterial nanotechnologyLi-accumulatorsSurface-enhanced Raman spectroscopyConductive materials
Owner:MITSUBISHI CHEM CORP
Magnesium-based metal organic framework material for methane-nitrogen adsorption separation and preparation
InactiveCN104415737ANitrogen purification/separationGas treatmentChemical compoundMetal-organic framework
The invention relates to a magnesium-based metal organic framework material for methane-nitrogen adsorption separation and a preparation method. The metal organic framework material is formed by coordination of at least one metal compound with at least one organic ligand to generate a framework material; the metal ions in the metal compound comprise one or more than one of Mg (II), Ni (II), Cu (II), Zn (II), Co (II), and Ca (II), and at least one metal ion is Mg (II); the organic ligand is a monodentate or polydentate organic compound of carboxylic acid or its derivatives. The invention also relates to an application of the porous magnesium-based organic framework material in methane-nitrogen adsorption separation.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Rubber composition for covering steel cord and pneumatic tire
InactiveUS20100200141A1Reduce adhesionReduce forceSpecial tyresPneumatic tyre reinforcementsNitrogenEngineering
A rubber composition for covering a steel cord is used to form a rubber-steel cord composite used as a reinforcing material of a pneumatic tire and the like. The rubber composition includes 100 parts by weight of a diene rubber, from 0.3 to 1.5 parts by weight of N-t-butyl-2-benzothiazole sulfenimide, and from 5 to 20 parts by weight of active zinc oxide having a specific surface area by nitrogen adsorption using BET method of 20 m2 / g or more.
Owner:TOYO TIRE & RUBBER CO LTD
Tire
ActiveCN102448739AReduce the temperatureImprove cooling effectSpecial tyresTyre sidewallsRolling resistanceEngineering
Disclosed is a pneumatic tire, in which turbulent flow-creating ridges extending from the inner circumference side to the outer circumference side are formed at intervals in the tire circumference direction on the tire surface of a tire side part, wherein: said turbulent flow-creating ridges have edge parts, as viewed in the sectional shape cut in the radial direction; the front wall angle, which is made between the front wall faces of the turbulent flow creating ridges to be hit by an air flow and the tire surface, ranges from 70o to 110o; and, as a side-reinforcing rubber constituting said tire side part, a rubber composition prepared by blending 100 parts by mass of a rubber component containing 10 mass% or more of a modified conjugated diene polymer, which is obtained by conducting a modification reaction between a terminus of a conjugated diene polymer and an alkoxysilane compound having a primary amino group or a precursor capable of forming a primary amino group through hydrolysis to thereby introduce the primary amino group or the precursor capable of forming a primary amino group through hydrolysis to said terminus, and further adding a fusion accelerator to the modification reaction system in the course of the modification reaction or after the completion thereof, with 10 to 100 parts by mass of carbon black having a nitrogen adsorption specific surface area of 20 to 90 m2 / g. Thus, it is possible to provide a durability-improvable tire, in which the temperature inside the tire side part can be lowered due to efficient heat radiation, and the durability during run-flat traveling and the rolling resistance during normal traveling, as the rubber composition, can be simultaneously improved.
Owner:BRIDGESTONE CORP
Liquid composition, ink set, method of forming a colored section on recording medium and ink-jet recording apparatus
InactiveUS6863391B2Quality improvementGood effectMeasurement apparatus componentsDuplicating/marking methodsDesorptionNitrogen
This invention relates to a liquid composition adapted to be applied to a recording medium with ink containing a multi-color to form a colored section on the recording medium. The liquid composition contains fine particles reactive relative to the solvent and the coloring material in ink. When processed in particular steps, it produces aggregates of fine particles showing a specific surface area between 70 and 250 m2 / g as determined by the BET nitrogen adsorption / desorption method.
Owner:CANON KK
Carbon material for catalyst support use
A carbon material for catalyst support use which, when used as a catalyst support, maintains a high porosity while being stable chemically, having electrical conductivity, being excellent in durability, and being excellent in diffusibility of the reaction starting materials and reaction products is provided. It is characterized by comprising dendritic carbon mesoporous structures which have 3D structures of branched carbon-containing rod shapes or carbon-containing ring shapes, having a pore size of 1 to 20 nm and a cumulative pore volume of 0.2 to 1.5 cc / g found by analyzing a nitrogen adsorption isotherm by the Dollimore-Heal method, and having a powder X-ray diffraction spectrum which has a peak corresponding to a 002 diffraction line of graphite between diffraction angles (2θ: degrees) of 20 to 30 degrees and has a peak with a half value width of 0.1 degree to 1.0 degree at 25.5 to 26.5 degrees.
Owner:NIPPON STEEL CORP +1
Three dimensional high regular nano-porous inorganic material having fine pores and method for preparation thereof, and method for evaluation thereof
InactiveUS20060078487A1Improve regularityLow costOxygen/ozone/oxide/hydroxideSilicaCrystallographyX-ray
A nanoporous inorganic material with high three-dimensional regularity having a large number of fine pores having a nanometer-order size in an inorganic skeleton structure, which has a pore size of 0.5 to 5 nm at a peak of a pore size distribution determined from a nitrogen adsorption isotherm, and a half-width of 1 (2θ / degree) or less in an X-ray diffraction peak of a (100) plane.
Owner:NAT INST OF ADVANCED IND SCI & TECH
Electric double layer capacitor
InactiveUS20100296226A1Fast chargingStable supplyMaterial nanotechnologyElectrolytic capacitorsFiberActivated carbon
Disclosed is an electric double layer capacitor having a positive polarizable electrode and a negative polarizable electrode, each of the positive and negative polarizable electrodes having a polarizable electrode layer, the positive polarizable electrode layer containing carbon fibers P and activated carbon P, the negative polarizable electrode layer containing carbon fibers N and activated carbon N, wherein at least one of the carbon fibers P and carbon fibers N has at least one peak in the range of 1 to 2 nm in a pore distribution determined by BJH analysis using a nitrogen adsorption method, and the sum total of BET specific surface areas of the activated carbon P and the carbon fibers P is larger than the sum total of BET specific surface areas of the activated carbon N and the carbon fibers N.
Owner:SHOWA DENKO KK
Rubber composition for side wall and pneumatic tire
InactiveUS20140090764A1InhibitionReduce the number of timesSpecial tyresInflatable tyresNitrogenRare earth
The present invention provides a rubber composition for a sidewall, which improves fuel economy, handling stability, tensile strength at break, elongation at break, and processability in a balanced manner, and which can also suppress the occurrence of broken spews during demolding of a resulting tire; and a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for a sidewall, comprising a rubber component having: a combined amount of a 1,2-syndiotactic polybutadiene crystal-containing butadiene rubber and a butadiene rubber synthesized in the presence of a rare earth catalyst of 5 to 60% by mass; an amount of a terminally modified butadiene rubber of 7 to 60% by mass; and an amount of an isoprene-based rubber of 20 to 70% by mass, each based on 100% by mass of the rubber component, wherein the rubber composition has: a combined amount of a carbon black having a nitrogen adsorption specific surface area of 25 to 120 m2 / g and a silica having a nitrogen adsorption specific surface area of 70 to 250 m2 / g of 20 to 40 parts by mass; and an amount of zinc oxide of 3.6 to 16 parts by mass, each per 100 parts by mass of the rubber component.
Owner:SUMITOMO RUBBER IND LTD
Rubber composition and tire having tread comprising thereof
InactiveCN1821293AImprove rolling resistance performanceImprove drivabilitySpecial tyresTyre tread bands/patternsRolling resistanceSilicon dioxide
Owner:SUMITOMO RUBBER IND LTD
Production of carbon monoxide-free hydrogen and helium from a high-purity source
Owner:AIR PROD & CHEM INC
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