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Title:
ALUMINA FIBER AGGREGATE AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/012423
Kind Code:
A1
Abstract:
A needled alumina fiber aggregate made of short alumina fibers, the needled alumina fiber aggregate being characterized in that: the average fiber diameter of the short alumina fibers is 6.0 µm to 10.0 µm; the specific surface area of the short alumina fibers is 0.2 m2/g to 1.0 m2/g; and the high temperature cycle open-side surface pressure persistence (%) of the alumina fiber aggregate is at least 45%. Preferably, the value of subtracting, from the length-weighted geometric average diameter for the diameter of the short alumina fibers, two times the standard error thereof is at least 6.0 µm. Preferably, the proportion of the short alumina fibers with a diameter exceeding 10.0 µm is not more than 5.0%, on a fiber number basis.

Inventors:
KIMURA, Yusuke (1-1 Marunouchi 1-chome, Chiyoda-k, Tokyo 51, 〒1008251, JP)
Application Number:
JP2017/024953
Publication Date:
January 18, 2018
Filing Date:
July 07, 2017
Export Citation:
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Assignee:
MITSUBISHI CHEMICAL CORPORATION (1-1 Marunouchi 1-chome, Chiyoda-ku Tokyo, 51, 〒1008251, JP)
International Classes:
D04H1/4209; D01F9/08
Domestic Patent References:
WO2014115814A12014-07-31
WO2014069589A12014-05-08
Foreign References:
JP2007332531A2007-12-27
JP2002356380A2002-12-13
JP2010031416A2010-02-12
JPS5831118A1983-02-23
JPS61186519A1986-08-20
JP2013170338A2013-09-02
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi et al. (Nissin bldg, 9F 5-10, Shinjuku 2-chome, Shinjuku-k, Tokyo 22, 〒1600022, JP)
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