Otsuka Chemical Co., Ltd.

Kurita Water Industries Ltd.

Nobuki Itoi

Satoshi Yamada

Koichi Mori

Kousuke Inada

Hiroshi Ogawa

Shigeo Takahashi

Hiroyoshi Mori

Hidetoshi Ogawa

Takahiro Mishima

Takashi Hamauzu

Toshiki Gotou

Kumiko Hari

Sodium hexatitanate having a mean particle diameter in the range of 2-5 &#x3bc;m and an indeterminate shape, and is either obtained by firing a milled mixture obtained as a result of mechanochemical milling of a titanium source and a sodium source or prepared from sodium trititanate obtained by firing a milled mixture obtained as a result of mechanochemical milling of a titanium source and a sodium source.

Sodium hexatitanate and method for production thereof

Provided are aluminum titanate capable of providing a sintered body having a low coefficient of thermal expansion, a high porosity, and high mechanical strength, a production method of the same, and a sintered body of the columnar aluminum titanate. The columnar aluminum titanate has an average aspect ratio (=(number average major-axis length)/(number average minor-axis length)) of 1.5 or more and its magnesium content is preferably within the range of 0.5% to 2.0% by weight relative to the total amount of titanium and aluminum in terms of their respective oxides.

Columnar aluminum titanate and method for producing same

A potassium titanate, method for manufacturing the potassium titanate, a friction material using the potassium titanate and a resin composition using the potassium titanate are disclosed. The potassium titanate is represented by KTiO(n=4.0-11.0) and has the highest X-ray diffraction intensity peak (2&#x3b8;) in the range of 11.0&#xb0;-13.5&#xb0; with its half width being not less than 0.5&#xb0;.

Method for manufacturing potassium titanate

Potassium titanate is obtained which has a novel configuration, exhibits excellent wear resistance when incorporated in a friction material and shows an excellent reinforcement performance when incorporated in a resin composition. A manufacturing method of the potassium titanate, a friction material using the potassium titanate and a resin composition using the potassium titanate are also obtained. The potassium titanate is represented by KTiO(n=4.0-11.0) and has the highest X-ray diffraction intensity peak (26) in the range of 11.0&#xb0;-13.5&#xb0; with its half width being not less than 0.5&#xb0;.

Potassium titanate, method for manufacturing the same, friction material and resin composition

Lepidocrocite potassium magnesium titanate having a composition represented by the formula KMgTiOand obtainable by subjecting an aqueous slurry of lepidocrocite potassium magnesium titanate having a composition represented by the formula KMgTiOto an acid treatment and subsequent calcination.

Lepidocrocite potassium magnesium titanate, method for manufacturing the same and friction material

Lepidocrocite lithium potassium titanate characterized as having a composition represented by the formula KLiTiO, and preferably having an arithmetic mean of major and minor diameters of 0.1&#x2013;100 &#x3bc;m, a proportion of a major to minor diameter of from 1 to below 10, a mean thickness of 50&#x2013;5,000 nm and a flaky shape. A friction material characterized as containing 1&#x2013;80% by weight of the lepidocrocite lithium potassium titanate as a friction control agent.

Lepidocrocite type lithium potassium titanate, method for preparation thereof, and friction material

Platy potassium titanate having a mean major diameter of 1-100 &mgr;m and a mean aspect ratio of 3-500 and obtainable by subjecting magnesium or lithium potassium titanate to an acid treatment to thereby prepare platy titanate, immersing the platy titanate in a potassium hydroxide solution and then subjecting it to calcination.

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Tokushima, Japan

Nobuki Itoi