FINE CARBON FIBER AND PROCESS FOR PRODUCING THE SAME, AND CONDUCTIVE MATERIAL COMPRISING THE SAME

Title:

FINE CARBON FIBER AND PROCESS FOR PRODUCING THE SAME, AND CONDUCTIVE MATERIAL COMPRISING THE SAME

Document Type and Number:

WIPO Patent Application WO/2001/077423

Kind Code:

A1

Abstract:

A fine carbon fiber which has a central portion of hollow structure, has an annual ring-like multilayer structure comprising cylindrical carbon layers, and has an outer diameter in a range of 1 to 80 nm and an aspect ratio in a range of 10 to 30,000, wherein the cylindrically layered carbon does not form a complete cylinder but is partly cut, or the cylindrical carbon layer is cut in the longitudinal direction, and as a result, the outer diameter of the fiber and/or the diameter of the hollow portion is not uniform in the longitudinal direction; a vapor phase process for producing the fine carbon fiber comprising reacting instantaneously an organic compound gas comprising an organometallic compound of a transition metal heated at a temperature below the decomposition temperature of the organometallic compound with a carrier gas having a high temperature. The fine carbon fiber has a conductivity of the same level as that of a conventional vapor phase carbon fiber and further is suitable as a filler for use in a resin, a rubber, a coating material and the like.

Inventors:

MORITA TOSHIO (JP)
INOUE HITOSHI (JP)
NISHIMURA KUNIO (JP)
SUHARA YUTAKA (JP)
OHSHIMA SATOSHI (JP)
YUMURA MOTOO (JP)

Application Number:

PCT/JP2001/003066

Publication Date:

October 18, 2001

Filing Date:

April 10, 2001

Export Citation:

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Assignee:

SHOWA DENKO KK (JP)
MORITA TOSHIO (JP)
INOUE HITOSHI (JP)
NISHIMURA KUNIO (JP)
SUHARA YUTAKA (JP)
OHSHIMA SATOSHI (JP)
YUMURA MOTOO (JP)

International Classes:

D01F9/127; (IPC1-7): D01F9/127

Domestic Patent References:

WO1990007023A1

1990-06-28

Foreign References:

JPS6170014A	1986-04-10
JPH0162366U	1989-04-20
EP0158853A2	1985-10-23

Other References: