ALUMINA FIBER AGGREGATE AND METHOD FOR PRODUCTION THEREOF

Title:

ALUMINA FIBER AGGREGATE AND METHOD FOR PRODUCTION THEREOF

Document Type and Number:

WIPO Patent Application WO/2003/010379

Kind Code:

A1

Abstract:

An alumina fiber aggregate which consists essentially of alumina short fibers having an average fiber diameter of 4.0 to 10.0 μm and a minimum fiber diameter of 3.0 μm or more&semi and (2) a method for producing the alumina fiber aggregate which comprises spinning a spinning solution containing basic aluminum chloride, a silicon compound, an organic polymer and water by the blowing method, and firing the resulting alumina short fiber precursor aggregate, characterized in that use is made of a spinning solution having a ratio of aluminum and silicon in terms of the weight ratio of Al₂O₃ and SiO₂ of 99:1 to 65:35, a concentration of the basic aluminum chloride of 180 to 200 g&sol L, and a concentration of the organic polymer of 20 to 40 g&sol L. The alumina fiber aggregate is composed of alumina short fibers having an increased diameter and thus is suppressed in the scatter of the alumina short fibers.

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Inventors:

SHOJI MAMORU (JP)
IKEDA NORIO (JP)
SASAKI TOSHIAKI (JP)

Application Number:

PCT/JP2002/007383

Publication Date:

February 06, 2003

Filing Date:

July 22, 2002

Export Citation:

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Assignee:

MITSUBISHI CHEM FUNCTIONAL PRO (JP)
SHOJI MAMORU (JP)
IKEDA NORIO (JP)
SASAKI TOSHIAKI (JP)

International Classes:

C04B35/622; C04B35/634; D01F9/08; D04H1/4209; D04H1/46; D04H1/498; D04H1/56; D04H1/72; D04H13/00; E04B1/72; E04B1/76; (IPC1-7): D04H1/42; D04H1/72

Foreign References:

JPH0441757A	1992-02-12
JPH0441758A	1992-02-12
EP0971057A1	2000-01-12
JP2002212836A	2002-07-31
EP0495466A2	1992-07-22
EP0971057A1	2000-01-12
JP2602460B2	1997-04-23
JP2000080547A	2000-03-21

Other References: