Nippon Shokubai Co., Ltd.

Teruhisa Nagashima

Kunihiko Ishizaki

Kozo Nogi

Kazuo Hata

Masatoshi Nakamura

Yusuke Watanabe

Masatoshi Shimomura

A method includes the steps of: adding an organic surface cross-linking agent to a water absorbent resin having a cross-linked structure; adding a liquid permeability improving agent to the water absorbent resin concurrently with or after the addition of the organic surface cross-linking agent; and then adding a lubrication improving agent to the water absorbent resin. This provides a particulate water absorbing agent and a method for producing it, the particulate water absorbing agent being suitable for pneumatic transportation, suffering no decrease in the effect of the liquid permeability improving agent, and excelling in properties such as fluidity and damage resistance after the pneumatic transportation.

Particulate water absorbing agent and method for producing the same

Disclosed is an electrode support substrate for a fuel cell which is even, gives a small fluctuation in gas permeability, and is capable of carrying out printing of an anodic electrode with high adhesiveness, and which comprises a ceramic sheet having a porosity of 20 to 50%, a thickness of 0.2 to 3 mm and a surface area of 50 cmor more wherein the variation coefficient of measured values of the gas permeable amounts of areas measured by the method according to JIS K 6400 ranges from 5 to 20% and further the surface roughness measured with a laser optical manner three-dimensional shape measuring device may be 1.0 to 40 &#x3bc;m as the maximum roughness depth (Rmax) thereof.

Solid oxide type fuel cell-use electrode support substrate and production method therefor

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Himeji, Japan

Teruhisa Nagashima