ALUMINA FIBER AGGREGATE AND RETAINER FOR CATALYTIC CONVERTER COMPRISING THE SAME

Title:

ALUMINA FIBER AGGREGATE AND RETAINER FOR CATALYTIC CONVERTER COMPRISING THE SAME

Document Type and Number:

WIPO Patent Application WO/2005/028727

Kind Code:

A1

Abstract:

An alumina fiber aggregate composed of alumina short fibers, characterized in that, when the fiber diameter of the alumina short fiber is x (μm), the percentage, in which a natural logarithm value lnx for x is less than ln3, is 2 % or less, in the logarithmic normal distribution of x, and also the value obtained by reducing the twofold of the standard error for said fiber diameters from the length weighted geometric mean diameter thereof is 6 μm or less; and a retainer for a catalytic converter comprising the alumina fiber aggregate. The alumina fiber aggregate is reduced in the scattering of fibers and thus is excellent from the view point of handlability and of working environment and sanitation, and also is suitable for use as a retainer for a catalytic converter and the like.

Inventors:

KAKIKURA EISAKU (JP)
SASAKI TOSHIAKI (JP)

Application Number:

PCT/JP2004/013509

Publication Date:

March 31, 2005

Filing Date:

September 16, 2004

Export Citation:

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Assignee:

MITSUBISHI CHEM FUNCTIONAL PRO (JP)
KAKIKURA EISAKU (JP)
SASAKI TOSHIAKI (JP)

International Classes:

D04H1/42; (IPC1-7): D04H1/42; D04H1/72

Foreign References:

JP2003105658A	2003-04-09
JP3282326B2	2002-05-13
JPH08174687A	1996-07-09

Other References: