4735693 Process for producing carbon fiber

4735693 Process for producing carbon fiber

Carbon Vol. 26, No. 6. pp. I-IV, Printed in Great Britain. 1988 copyright ow8-6223188 s3.00 + .Gu 8 1988 Pergamon Press plc NEW PATENTS This Sectio...

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Carbon Vol. 26, No. 6. pp. I-IV, Printed in Great Britain.

1988 copyright

ow8-6223188 s3.00 + .Gu 8 1988 Pergamon Press plc

NEW PATENTS This Section contains abstracts and, where appropriate, illustrations of recently issued United States Patents and published patent applications filed from over 30 countries under the Patent Cooperation Treaty. This information was obtained from recent additions to the Pergamon PATSEARCH’ online database in accordance with interest profiles developed by the Editors. Further information about Pergamon PATSEARCH ” can be obtained from Pergamon Orbit InfoLine Inc., 8000 Westpark Drive, McLean, Virginia 22102 U.S.A. Copies of complete patents announced in this Section are available from Pergamon Orbit InfoLine Inc. for $8 per copy. Payment with order is required. Orders outside North America add $2 for air postage. Order by patent number for Pergamon Orbit InfoLine only.

4735493

coated fibers, so produced are readily wettable without degradation when immersed in a molten bath of metal matrix material containing an active alloying element.

PROCESS FOR PRODUCING CARBON FIBER Hajime Asai, Fujio signed to Mitsubishi

Nakao, Rayon

Ohtake, Co Ltd

Japan

as-

4737540 for detecting the surface characteristic of a carbon fiber, which comprises making the carbon fiber travel through an electrolyte solution, applying an electric potential in said sohttion between the carbon fiber serving as a working electrode and a counter electrode provided in the solution, said potential being varied continuously within a range of potential not higher than the standard electrode potential, and detecting continuously the resulting charnge of intensity of electric current, and a process for producing a carbon fiber giving a high interfacial bond strength between the fiber and matrix resin, which comprises making the carbon fiber have a constant surface characteristic by apphcation of the above-mentioned detection method. A method

CARBON FIBER REINFORCED POLYESTER RESIN COMPOSITION Tomohiko Yoshida, Naoyuki Suzuki, Kamakura, Japan assigned to Mitsubishi Rayon Co Ltd Disclosed is a carbon fiber reinforced polyester resin composition comprising (A) 30 to 98.985% by weight of a thermoplastic polyester resin, (B) I to 60% by weight of a carbon fiber, (C) 0.01 to 50/oby weight of at least one compound selected from the following compounds (I), (II) and (III): (I) at least one sulphur compound represented by the following formula (X): See Parenrfor Chemical Sfructure (X) wherein Rl and R2 stand for CmHZm+ 1 radical. and m stands for a recurring number of 1 to 30. (II) at least one salt of an organic carboxylic acid with a metal of the group la or IIa of the Periodic Table, (III) a phosphorus compound, and (D) 0.005 to So,; by weight of at least one polycarbonate resin represented by the following formula (IV), See Pntettt ,for Chemical Swucture (IV) wherein R3 through RIO stand for independently a hydrogen atom or a halogen atom, R 11 and R I2 stand for independently an alkyl radical. and n stands for an average recurring number of not less than 3. This carbon fiber reinforced polyester resin composition can be adapted to be molded into formed products with minimized sink mark and thus superior appearance.

4737382 CARBIDE COATINGS FOR FABRICATION OF CARBONFIBER-REINFORCED METAL MATRIX COMPOSITES Howard

A Katzman

assigned

to The Aerospace

Corporation A carbon fiber reinforced metal matrix composite is produced by carbide coating the surface of the fibers by passing the fibers through an organometalhc solution followed by pyrolysis of the

organometallic

compounds.

The

carbide I