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4762652 Process and apparatus for producing carbon fiber mat
IV
New Patents
carbon fiber material exhibits a flexibility ratio D/d of not greater than 200 (where D is the diameter of curvature of the carbon material, when bent, just before breakage, and d is the thickness of the carbon material). The carbon fibers and lumps are preferrably present in an amount of from 5 to 50x, and 5 to 70% by volume, respectively, based upon the total volume of the carbon material.
4759985 COMPOSITES OF BROKEN ALIGNED CARBON AND REINFORCED
STRETCH FIBERS OF GLASS RESIN
Thomas E Armiger, David Edison, Herbert Lauterbach, James R Layton, Richard K Okine assigned to E I Du Pont de Nemours and Company A coating of a viscous lubricant applied prior to stretch-breaking permits forming slivers of stretch-broken carbon fibers. When an antistatic ingredient is added to the viscous lubricant cohesive slivers of stretch-broken glass fibers can be formed. Composites of matrix resin reinforced with these slivers exhibit high strength, tensile stiffness, and good formability.
4759989 ELECTRODE SUBSTRATE FOR FUEL CELL Hikonori Abe, Masayuki Funabashi, Japan assigned to Kureha Kagaku Kabushiki Kaisha
Iwaki, Kogyo
Disclosed herein is an electrode substrate for a fuel cell, wherein at least a part of the electrode substrate comprises a flexible carbon material obtained from a composite material comprising carbon fibers of not less than 1 mm in mean length which have been treated at a temperature of not lower than 1000 degrees C. and a binding agent, the electrode substrate being contacted with flow channels of a reactant gas and the flexible carbon material comprising carbon lumps derived from the binding agent which are dispersed in the matrix of the carbon fibers and restrain a plurality of the carbon fibers and the carbon fibers slidably held to one another by the carbon lumps.
4760046 PROCESS FOR THE PRODUCTION OF ACTIVATED CARBONS USING PHOSHORIC ACID Ale Burger, Karl-Friedrich Thorn, Peter Schmidt, Cologne, Federal Republic Of Germany assigned to Bayer Aktiengesellschaft Activated carbon is produced by an improved process which comprises subjecting a mash comprising carbon-containing combustibles, phosphoric acid and water to a rapid thermal pretreatment at temperatures of from 80 degrees to 250 degrees C. in the presence of steam and oxygen followed by activation at temperatures of from 250 degrees to 550 degrees C. for no more than 30 minutes.
4761308 PROCESS FOR THE PREPARATION OF REFLECTIVE PYROLYTIC GRAPHITE Joseph J Gebhardt, Robert Mulvey, John J Yodsnukis assigned to General Electric Company A process for preparing reflective pyrolytic graphite by the chemical vapor deposition of graphite on a suitable support from methane or other short chain hydrocarbons at a suitable pressure and temperature followed by annealing the pyrolytic graphite at a temperature in excess of 2600 degrees C. and pressure of 5 to 10 tort-.
4762652 PROCESS AND APPARATUS FOR PRODUCING CARBON FIBER MAT Tamotsu Miyamori, Iwao Kameyama, Takeo Abe, Iwaki, Japan assigned to Kureha Kagaku Kogyo Kabushiki Kaisha Disclosed herein are a process for producing a carbon fiber mat, having excellent production and energy efficiencies, comprising successively melt-spinning a fiber-forming pitch by a centrifugal spinning machine having a horizontal axis of rotation (parallel to the plane on which the spinning machine is placed), forming a mat by the thus spun pitch fibers, bringing the mat
New Patents
into an infusibilized state in an air atmosphere containing NO2 and calcining the thus infusibilized mat in an inert atmosphere, and an apparatus for carrying out the above-mentioned process.
V
CARBON BLACK REACTOR HAVING A REACTOR THROAT
average cell diameter 3 to 100 times the length of the activated carbon fiber, wherein the activated carbon fiber is adhered to the substrate by a binder, and wherein the activated carbon fiber is deposited on and in the substrate by impregnating the substrate with a dispersion obtained by dispersing activated carbon fiber in a dispersion or solution of a binder, and drying methods for forming and using the same are also disclosed.
Mark L Gravley, E Webb Henderson assigned to Phillips Petroleum Company
4772502
4765964
A new reactor for the production of carbon black, a method for the production of carbon black, and a carbon black are disclosed. The carbon blacks are characterized by a surface area preferably in the range of 70 to 150 m2/g and G values of either less than 1.20 or greater than 1.85, corresponding to very narrow or very broad aggregate size distributions, respectively. The reactor is preferably for axial flow of combustion gases and is characterized by serial arrangement of a cylindrical combustion zone, a frustoconical converging zone, a throat, an abrupt diverging zone and a cylindrical pyrolysis zone. In certain aspects of the invention, the combustion gases are formed by combusting low BTU fuel and forcing these gases through the throat at a velocity approaching Mach 1. In one method of carbon black production, the feedstock is introduced into the converging zone. In another method, it is introduced as a spray. In other methods, the feedstock is introduced with upstream or downstream velocity components.
PREFORMED YARN USEFUL IN FORMING COMPOSITE ARTICLES AND PROCESS OF PRODUCING SAME Akimits Okura, Toshoku Cho, Taka Nakagawa, Shimpei Gomi, Takuya Ueda, Tokyo, Japan assigned to Across Co Ltd A preformed yarn useful in forming fiberreinforced carbon composite articles is disclosed which includes a core of a multiplicity of inorganic reinforcing fibers, a mixed powder provided in the interstices between the fibers and including a finely divided carbonaceous binder pitch and a finely divided coke, and a flexible sleeve formed of a thermoplastic resin and surrounding the core.
4772508 ACTIVATED CARBON-CARBON COMPOSITE OF HIGH SURFACE AREA AND HIGH COMPRESSIVE STRENGTH
4772455 FILTER Kazuo Izumi, Kenz Shimazaki, Shizuoka, Japan assigned to Toho Belson Co Ltd A filter composed of a mesh structure substrate having deposited thereon and therein activated carbon fiber treated with an alkali and having a length within the range of from 5 to 1,000 mu, wherein the mesh structure substrate has an
Gilbert W Brassell A carbon bonded carbon fiber composite having a surface area greater than about 10 m2/g, and a compressive strength of about 20 psi or higher provides excellent filtering capacity in an activated carbon able to withstand heretofore intolerable environmental disturbances.
For information about PATSEARCH” Pergamon Orbit InfoLine Inc. 8000 Westpark Drive McLean, VA 22102 USA Telephone (703) 442-0900 Telex: 90-1811
Pergamon Orbit InfoLine Ltd 12 Vandy Street London EC2A 2DE UK Telephone (01) 377-4650 Telex: 8814614
New Patents
carbon fiber material exhibits a flexibility ratio D/d of not greater than 200 (where D is the diameter of curvature of the carbon material, when bent, just before breakage, and d is the thickness of the carbon material). The carbon fibers and lumps are preferrably present in an amount of from 5 to 50x, and 5 to 70% by volume, respectively, based upon the total volume of the carbon material.
4759985 COMPOSITES OF BROKEN ALIGNED CARBON AND REINFORCED
STRETCH FIBERS OF GLASS RESIN
Thomas E Armiger, David Edison, Herbert Lauterbach, James R Layton, Richard K Okine assigned to E I Du Pont de Nemours and Company A coating of a viscous lubricant applied prior to stretch-breaking permits forming slivers of stretch-broken carbon fibers. When an antistatic ingredient is added to the viscous lubricant cohesive slivers of stretch-broken glass fibers can be formed. Composites of matrix resin reinforced with these slivers exhibit high strength, tensile stiffness, and good formability.
4759989 ELECTRODE SUBSTRATE FOR FUEL CELL Hikonori Abe, Masayuki Funabashi, Japan assigned to Kureha Kagaku Kabushiki Kaisha
Iwaki, Kogyo
Disclosed herein is an electrode substrate for a fuel cell, wherein at least a part of the electrode substrate comprises a flexible carbon material obtained from a composite material comprising carbon fibers of not less than 1 mm in mean length which have been treated at a temperature of not lower than 1000 degrees C. and a binding agent, the electrode substrate being contacted with flow channels of a reactant gas and the flexible carbon material comprising carbon lumps derived from the binding agent which are dispersed in the matrix of the carbon fibers and restrain a plurality of the carbon fibers and the carbon fibers slidably held to one another by the carbon lumps.
4760046 PROCESS FOR THE PRODUCTION OF ACTIVATED CARBONS USING PHOSHORIC ACID Ale Burger, Karl-Friedrich Thorn, Peter Schmidt, Cologne, Federal Republic Of Germany assigned to Bayer Aktiengesellschaft Activated carbon is produced by an improved process which comprises subjecting a mash comprising carbon-containing combustibles, phosphoric acid and water to a rapid thermal pretreatment at temperatures of from 80 degrees to 250 degrees C. in the presence of steam and oxygen followed by activation at temperatures of from 250 degrees to 550 degrees C. for no more than 30 minutes.
4761308 PROCESS FOR THE PREPARATION OF REFLECTIVE PYROLYTIC GRAPHITE Joseph J Gebhardt, Robert Mulvey, John J Yodsnukis assigned to General Electric Company A process for preparing reflective pyrolytic graphite by the chemical vapor deposition of graphite on a suitable support from methane or other short chain hydrocarbons at a suitable pressure and temperature followed by annealing the pyrolytic graphite at a temperature in excess of 2600 degrees C. and pressure of 5 to 10 tort-.
4762652 PROCESS AND APPARATUS FOR PRODUCING CARBON FIBER MAT Tamotsu Miyamori, Iwao Kameyama, Takeo Abe, Iwaki, Japan assigned to Kureha Kagaku Kogyo Kabushiki Kaisha Disclosed herein are a process for producing a carbon fiber mat, having excellent production and energy efficiencies, comprising successively melt-spinning a fiber-forming pitch by a centrifugal spinning machine having a horizontal axis of rotation (parallel to the plane on which the spinning machine is placed), forming a mat by the thus spun pitch fibers, bringing the mat
New Patents
into an infusibilized state in an air atmosphere containing NO2 and calcining the thus infusibilized mat in an inert atmosphere, and an apparatus for carrying out the above-mentioned process.
V
CARBON BLACK REACTOR HAVING A REACTOR THROAT
average cell diameter 3 to 100 times the length of the activated carbon fiber, wherein the activated carbon fiber is adhered to the substrate by a binder, and wherein the activated carbon fiber is deposited on and in the substrate by impregnating the substrate with a dispersion obtained by dispersing activated carbon fiber in a dispersion or solution of a binder, and drying methods for forming and using the same are also disclosed.
Mark L Gravley, E Webb Henderson assigned to Phillips Petroleum Company
4772502
4765964
A new reactor for the production of carbon black, a method for the production of carbon black, and a carbon black are disclosed. The carbon blacks are characterized by a surface area preferably in the range of 70 to 150 m2/g and G values of either less than 1.20 or greater than 1.85, corresponding to very narrow or very broad aggregate size distributions, respectively. The reactor is preferably for axial flow of combustion gases and is characterized by serial arrangement of a cylindrical combustion zone, a frustoconical converging zone, a throat, an abrupt diverging zone and a cylindrical pyrolysis zone. In certain aspects of the invention, the combustion gases are formed by combusting low BTU fuel and forcing these gases through the throat at a velocity approaching Mach 1. In one method of carbon black production, the feedstock is introduced into the converging zone. In another method, it is introduced as a spray. In other methods, the feedstock is introduced with upstream or downstream velocity components.
PREFORMED YARN USEFUL IN FORMING COMPOSITE ARTICLES AND PROCESS OF PRODUCING SAME Akimits Okura, Toshoku Cho, Taka Nakagawa, Shimpei Gomi, Takuya Ueda, Tokyo, Japan assigned to Across Co Ltd A preformed yarn useful in forming fiberreinforced carbon composite articles is disclosed which includes a core of a multiplicity of inorganic reinforcing fibers, a mixed powder provided in the interstices between the fibers and including a finely divided carbonaceous binder pitch and a finely divided coke, and a flexible sleeve formed of a thermoplastic resin and surrounding the core.
4772508 ACTIVATED CARBON-CARBON COMPOSITE OF HIGH SURFACE AREA AND HIGH COMPRESSIVE STRENGTH
4772455 FILTER Kazuo Izumi, Kenz Shimazaki, Shizuoka, Japan assigned to Toho Belson Co Ltd A filter composed of a mesh structure substrate having deposited thereon and therein activated carbon fiber treated with an alkali and having a length within the range of from 5 to 1,000 mu, wherein the mesh structure substrate has an
Gilbert W Brassell A carbon bonded carbon fiber composite having a surface area greater than about 10 m2/g, and a compressive strength of about 20 psi or higher provides excellent filtering capacity in an activated carbon able to withstand heretofore intolerable environmental disturbances.
For information about PATSEARCH” Pergamon Orbit InfoLine Inc. 8000 Westpark Drive McLean, VA 22102 USA Telephone (703) 442-0900 Telex: 90-1811
Pergamon Orbit InfoLine Ltd 12 Vandy Street London EC2A 2DE UK Telephone (01) 377-4650 Telex: 8814614