US3392216A - Method for producing carbon structures from molten baked substances - Google Patents

Method for producing carbon structures from molten baked substances Download PDF

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Publication number
US3392216A
US3392216A US406603A US40660364A US3392216A US 3392216 A US3392216 A US 3392216A US 406603 A US406603 A US 406603A US 40660364 A US40660364 A US 40660364A US 3392216 A US3392216 A US 3392216A
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temperature
filaments
carbon
substance
treatment
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US406603A
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Otani Sugio
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Kureha Corp
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Kureha Corp
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/20—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products
    • D01F9/21—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F9/22—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyacrylonitriles
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/524—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from polymer precursors, e.g. glass-like carbon material
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/145—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from pitch or distillation residues
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/145—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from pitch or distillation residues
    • D01F9/15—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from pitch or distillation residues from coal pitch
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/145—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from pitch or distillation residues
    • D01F9/155—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from pitch or distillation residues from petroleum pitch
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/16—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from products of vegetable origin or derivatives thereof, e.g. from cellulose acetate
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/20—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products
    • D01F9/21—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/20—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products
    • D01F9/24—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/19—Inorganic fiber

Definitions

  • the shaped articles resulting from the process are likewise provided.
  • the method comprises the steps of (a) heating a natural or synthetic organic substance in the presence of an inert gas to a temperature in the range of about 300 to 500 C., which temperature is below the carbonization temperature of such substance,
  • the shaped articles are useful for a wide range of uses,
  • thermal insulation materials such as for example, thermal insulation materials, carbon electrodes, and the like.
  • This invention relates to techniques in the production of carbon structures including shaped articles and more particularly to a new method for producing shaped articles of carbon from molten baked organic substances.
  • a method for producing shaped articles of carbon which 3,302,215 Patented July 9, 1968 ice comprises melt extrusion and stretching of a molten stock resulting from the baking, at a temperature of from 300 to 500 C., of a natural or synthetic organic substances.
  • the melt extrusion is accomplished at the baking temperature of said starting material or in the temperature region therebelow.
  • the extrusion is followed by an oxilation treatment and a carbonization treatment of the re sulting filament under nitrogen.
  • the present invention is based on the remarkable discovery that when many kinds of organic compounds are heated at a suitable temperature in the range from 300 to 500 C., the resulting molten products shortly before carbonization exhibit excellent spinnabiiity.
  • Examples of natural or synthetic organic substances which can be used in the practice of the present invention are synthetic high-polymer substances such as polyvinyl chloride and polyacrylonitrile, and high-polymer or lowpolymer organic substances such as petroleum pitch, coal and coal pitch, distillation residues of benzyl chloride and chlorobenzene, and by-products of DDT.
  • synthetic high-polymer substances such as polyvinyl chloride and polyacrylonitrile
  • high-polymer or lowpolymer organic substances such as petroleum pitch, coal and coal pitch, distillation residues of benzyl chloride and chlorobenzene, and by-products of DDT.
  • the resultin substance in the pitch state is considered to be a polycyclic aromatic compound closely related in structure to aromatic plane component making up amorphous carbon. if the temperature is raised to 500 C., this polycyclic aromatic compound will again harden without remarkable weight loss and become a lustrous, massive substance which is insoluble and unmeltable.
  • the aforementioned substance in the pitch state is cooled to C., or lower temperature, it will also become a black, lustrous solid. This solid can be readily dissolved in benzene, chloroform, and other solvents and melts when heated over 150 C.
  • the term carbon is herein used in the crystallographical meaning to designate that structure wherein con densed polycyclic planes are arranged in laminar form.
  • the temperature region higher than so called thermaldecomposition temperature and lower than the carbonization temperature is herein called the temperature region shortly before the carbonization. This temperature region differs with different substances and, even with the same substance, it varies somewhat depending on the surrounding atmosphere and the rate of heating. However, in any case this temperature region does not depart greatly from the range of approximately from 300 to 500 C.
  • the natural or synthetic organic substance used in the method of this invention is heated to a temperature in the region of 300 to 500 C. shortly before the carbonization in a nitrogen gas (N carbon dioxide gas (CO or some other inert gas atmosphere, or under conditions wherein oxygen does not exist.
  • N carbon dioxide gas CO or some other inert gas atmosphere, or under conditions wherein oxygen does not exist.
  • the substance is shaped into the desired form such as filaments, which, as a result of the succeeding oxidation treatment with air or other agent and heat treatment, is unexpectedly rendered unmeltable in a very easy manner.
  • this extruded material further to carbonization or graphitization, it is possible to obtain the objective carbon or graphite article such as filaments.
  • the starting material by heating the starting material at a suitable temperature below the carbonization temperature within the range of from 300 to 500 C. for a suitable time, for example, from 5 minutes to hours, the necessary rearrangement of the molecules is effected, and a plastic material suitable for melt extrusion (for example, melt spinning) is obtained.
  • the baked substance in a pitch state, heated for a suitable time at a suitable temperature in the range of from 300 to 500 C. may be cooled once, preserved, and then reheated for the succeeding melt extrusion process, or it may be immediately subjected to an appropriate temperature change in order to adjust its molten viscosity for the succeeding extrusion process and then extruded (for example, spun as filaments).
  • a temperature below the aforementioned baking temperature is ordinarily selected for the extrusion temperature.
  • the extrusion process is preferably carried out in an atmosphere of an inert gas as mentioned hereinabove, but the extruded article (for example, filaments) is caused to contact air or an oxidizing gas at the extrusion temperature or lower temperature for a number of minutes or longer. It has been found that this process is remarkably etfective. It appears that, by this process, recoupling occurs together with the alinement of the modecules in the extrusion (filament) direction during the succeeding stretching process or subsequent process to which the extruded article is subjected, whereby high polymer carbon material (carbon filaments) of insoluble and unmeltable characteristic is further produced.
  • the carbon extruded article (filaments) obtained in the above manner are subsequently carbonized amply in a state wherein they are not in contact with oxidizing gases such as air.
  • the rate of heating during this step is preferably 10 C./minute or lower.
  • this temperature rises above 600 to 700 C. to approximately 1,500 C. the shaped article (filaments) assumes mechanical strength of practical magnitude. If necessary, the article can be further subjected to heat treatment at 2,000 C. or higher temperature to produce a graphite article (filaments).
  • Carbon filaments or graphite filaments produced in the above described manner can be used effectively for a wide range of uses, examples of which are thermal insulation materials, carbon electrode, other basic materials for carbon and graphite products, reinforcement materials in general, reinforcement materials for various products made of synthetic resins, electroconductive and heating mats, heat-resistant packings, fillers for electroconductive paints, and various resistance materials for electronics.
  • Example 1 grams of polyvinyl chloride powder was heated in nitrogen gas (inert gas) at a rate of 1 C./minute up to 400i5 C., which temperature was maintained for one hour, whereupon 30 grams of a molten baked substance was obtained. (When this substance is cooled to room temperature, it solidifies, and, further, when it is crushed, it becomes a brownish black powder.)
  • This substance was heated rapidly to 275 15 C. and melted as carbon dioxide gas was caused to flow over its surface.
  • the molten substance was then extruded into air and stretched to produce filaments of diameters of from 20 to 30 microns.
  • These filaments were heated from room temperature at a rate of 5 C./minute up to 250 C. at which temperature N gas was caused to flow to replace air, and the heating was continued at the same rate up to 900 C., which was then maintained constant for ten minutes.
  • the filaments were then left to cool naturally.
  • Example 2 The distillation residue which is a by-product in the production of benzyl chloride from the reaction of chlorine with toluene is a brownish black, tar-form substance. 250 grams of this substance was heated to 400 C. in a stream of N gas and subjected to dry distillation, the same temperature then being maintained for a further 30 minutes to remove low-temperature boiling point components and decomposition products.
  • Example 3 250 grams of the same distillation residue of benzyl chloride as used in Example 2 was heated to 400 C. in a stream of N gas and dry distilled. The temperature was maintained for a further 30 minutes, and then, as the pitch state of the resulting substance was maintained, it was gradually cooled from 220 to 240 C. and then spun at this temperature, whereupon a filament-form product was readily obtained. By subjecting this product to the same heat treatment as set forth in Example 2, excellent carbon filaments were obtained.
  • the present invention in another important aspect thereof, provides a new oxidation treatment step for the product subsequent to its melt extrusion.
  • This treatment great saving is effected in the time and heat supply necessary for the process of producing carbon filaments and other carbon structures.
  • This treatment affords not only economic advantage but also substantial improvement in the quality of the product, particularly making possible the production of carbon filaments of remarkably high strength.
  • the extruded filaments are caused to contact air or an oxidizing gas at the extrusion temperature or lower temperature for several minutes or longer.
  • a treatment is carried out on the filaments with air containing ozone or with oxygen gas for a suitable time of 7 hours or less at a suitable temperature in the range of from room temperature to 100 C., and immediately thereafter the filaments are subjected to oxida tion treatment in air at a temperature range up to 260 C.
  • the filaments so obtained are then subjected to ample carbonization treatment in a state wherein they are not in contact with an oxidizing gas such as air as described hereinbefore.
  • Example 4 by carrying out a 3-hour ozone treatment at 70 C., it is possible to shorten substantially and freely the time of preparatory oxidation treatment necessary for rendering the product insoluble without dfiiculty. This desirable effect cannot be expected from a simple heating in air. Moreover, a treatment imparting such a great effect on the quality of carbon filaments has heretofore been unknown as far as we are aware.
  • Example 4 100 grams of polyvinyl chloride powder was heated in nitrogen gas (inert gas) at a rate of 1 C./minute up to 4001-5" C., which temperature was maintained for one hour, whereupon 30 grams of a molten baked substance was obtained as described in Example 1.
  • This substance was heated rapidly to 275 i5 C. and melted as N gas was caused to flow over its surface.
  • the molten substance was then extruded through a jet (spinneret) into air to produce filaments having diameters of from 5 to 30 microns. These filaments were ozone treated under the following conditions.
  • Treatment temperatures 25, 50, and 70 degrees C.
  • Ozone concentration 10.4 grams/cubic meter
  • ozone flowrate liters/ hour.
  • the filaments so treated were then heated in air to 260 C. and maintained at this temperature for one hour, after which they were carbonized by the normal procedure by heating in N gas to 1,000 C.
  • Example 5 Samples similar to those in Example 4 except that the spinning conditions were varied suitably to obtain fila ments of diiferent diameters were prepared, which were all ozone treated 70 C. for 3 hours. The other treatment conditions were the same as those in Example 1. As a result, carbon filaments having final diameters of 15, 10, and 8.5 microns were obtained.
  • a method for the production of carbon shaped articles which comprises:
  • a method for the production of carbon shaped articles which comprises:
  • organic substance is a member selected from the group consisting of polyvinyl chloride, polyacrylonitrile, petroleum pitch, coal, coal pitch, distillation residue of benzyl chloride and chlorobenzene, and by-products of DDT.
  • oxidizing gas in (c) is selected from the group consisting of air, oxygen gas and air containing ozone.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Inorganic Fibers (AREA)
US406603A 1963-11-01 1964-10-26 Method for producing carbon structures from molten baked substances Expired - Lifetime US3392216A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5894263 1963-11-01
JP4977264 1964-09-01

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US00051817A Expired - Lifetime US3716607A (en) 1963-11-01 1970-07-07 Heat treatment of molten carbonaceous material prior to its conversion to carbon fibers and other shapes

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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3639953A (en) * 1969-08-07 1972-02-08 Kanegafuchi Spinning Co Ltd Method of producing carbon fibers
US3852428A (en) * 1970-09-08 1974-12-03 Coal Industry Patents Ltd Manufacture of carbon fibres
US3869302A (en) * 1970-08-06 1975-03-04 Great Lake Carbon Corp Method for manufacture of graphite flour
US3888958A (en) * 1970-03-21 1975-06-10 Bergwerksverband Gmbh Process for making shaped pieces from low temperature coke of low bulk weight
US3899574A (en) * 1970-11-02 1975-08-12 Gen Electric Method for making graphite fiber and ribbon
US3943213A (en) * 1970-04-06 1976-03-09 Great Lakes Carbon Corporation Method for manufacturing high temperature graphite fiber-graphite composites
US3959448A (en) * 1969-08-27 1976-05-25 Coal Industry (Patents) Limited Process for the manufacture of carbon fibers
FR2289468A1 (fr) * 1974-10-28 1976-05-28 Aerospace Corp Procede d'application de revetements de carbone vitreux
US3995014A (en) * 1973-12-11 1976-11-30 Union Carbide Corporation Process for producing carbon fibers from mesophase pitch
US3997654A (en) * 1974-04-24 1976-12-14 Bergwerksverband Gmbh Method for the production of carbonaceous articles, particularly strands
US4016247A (en) * 1969-03-31 1977-04-05 Kureha Kagaku Kogyo Kabushiki Kaisha Production of carbon shaped articles having high anisotropy
US4055583A (en) * 1974-04-24 1977-10-25 Bergwerksverband Gmbh Method for the production of carbonaceous articles, particularly strands
US4066737A (en) * 1971-05-05 1978-01-03 Koppers Company, Inc. Method for making isotropic carbon fibers
US4184942A (en) * 1978-05-05 1980-01-22 Exxon Research & Engineering Co. Neomesophase formation
US4356158A (en) * 1981-07-04 1982-10-26 Nippon Carbon Co., Ltd. Process for producing carbon fibers
EP0099425A1 (en) * 1982-07-22 1984-02-01 Amoco Corporation Method for producing a mesophase pitch derived carbon yarn and fiber
US5238672A (en) * 1989-06-20 1993-08-24 Ashland Oil, Inc. Mesophase pitches, carbon fiber precursors, and carbonized fibers
US20140120026A1 (en) * 2011-08-30 2014-05-01 Carbon Fiber Recycle Industry Ltd. Device for Manufacturing Recycled Carbon Fibers, and Method for Manufacturing Recycled Carbon Fibers

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005183A (en) * 1972-03-30 1977-01-25 Union Carbide Corporation High modulus, high strength carbon fibers produced from mesophase pitch
US4017327A (en) * 1973-12-11 1977-04-12 Union Carbide Corporation Process for producing mesophase pitch
US3976729A (en) * 1973-12-11 1976-08-24 Union Carbide Corporation Process for producing carbon fibers from mesophase pitch
US4138525A (en) * 1976-02-11 1979-02-06 Union Carbide Corporation Highly-handleable pitch-based fibers
JPS5590621A (en) * 1978-12-26 1980-07-09 Kureha Chem Ind Co Ltd Production of carbon fiber
JPS5920381A (ja) * 1982-07-28 1984-02-02 Fuji Standard Res Kk 微粒含油炭素質球の製造法
US4856179A (en) * 1983-04-21 1989-08-15 Hoechst Celanese Corp. Method of making an electrical device made of partially pyrolyzed polymer
US4581437A (en) * 1985-01-22 1986-04-08 E. I. Du Pont De Nemours And Company Method of treating filaments of poly(p-phenylene-trans-benzobisthiazole) or poly(p-phenylene-cis-benzobisoxazole)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2437687A (en) * 1943-11-24 1948-03-16 Celanese Corp Melt extrusion of artificial filaments, films and the like and apparatus therefor
GB911542A (en) * 1960-08-25 1962-11-28 Tokai Denkyoku Seizo Kabushiki Improvements in or relating to the manufacture of heat resistant and corrosion resistant polyacrylonitrile fibres
US3092519A (en) * 1961-03-17 1963-06-04 Kendall & Co Battery separator
US3258363A (en) * 1961-08-21 1966-06-28 Leesona Corp Carbonized polyvinylidenechloride fuel cell electrode

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2437687A (en) * 1943-11-24 1948-03-16 Celanese Corp Melt extrusion of artificial filaments, films and the like and apparatus therefor
GB911542A (en) * 1960-08-25 1962-11-28 Tokai Denkyoku Seizo Kabushiki Improvements in or relating to the manufacture of heat resistant and corrosion resistant polyacrylonitrile fibres
US3092519A (en) * 1961-03-17 1963-06-04 Kendall & Co Battery separator
US3258363A (en) * 1961-08-21 1966-06-28 Leesona Corp Carbonized polyvinylidenechloride fuel cell electrode

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016247A (en) * 1969-03-31 1977-04-05 Kureha Kagaku Kogyo Kabushiki Kaisha Production of carbon shaped articles having high anisotropy
US3639953A (en) * 1969-08-07 1972-02-08 Kanegafuchi Spinning Co Ltd Method of producing carbon fibers
US3959448A (en) * 1969-08-27 1976-05-25 Coal Industry (Patents) Limited Process for the manufacture of carbon fibers
US3888958A (en) * 1970-03-21 1975-06-10 Bergwerksverband Gmbh Process for making shaped pieces from low temperature coke of low bulk weight
US3943213A (en) * 1970-04-06 1976-03-09 Great Lakes Carbon Corporation Method for manufacturing high temperature graphite fiber-graphite composites
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