Kureha Kagaku Kogyo Kabushiki Kaisha

Kuniaki Hino

Kazuhiro Watanabe

Yoshio Okada

Yasushi Nishimura

Yasuo Uehara

Hiroshi Endo

Susumu Okazaki

Masao Katoh

The present invention discloses a phosphate adsorbent comprising an MgO-TiO.sub.2 complex as an active ingredient and a phosphate adsorbent having said complex deposited on active carbons. In the preferred embodiments of the present invention, the MgO/TiO.sub.2 molar ratio in the complex is in the range of 99.99/0.01 to 80/20, the specific surface area of the adsorbent as measured by BET method is in the range of 50 to 700 m.sup.2 /g. and the absorbent shows a crystal diffraction pattern of MgO in powder X-ray diffractometry. The phosphate adsorbent according to the present invention is useful as an antihyperphosphoremial agent, an adsorbent for hemoperfusion and a therapeutical agent for renal diseases.

Complex phosphate adsorbent of MgO-TiO.sub.2

Disclosed herein is a novel porous and spherical carbonaceous product having acidic groups, basic groups, phenolic hydroxyl groups and carboxyl groups as functional groups at the following relationships: (1) the equivalent ratio of the acidic groups to the basic groups is in the range of 0.40 to 2.5 and (2) the value obtained by subtracting the amount of the carboxyl groups from the sum of the amounts of the basic groups and the phenolic hydroxylic groups is larger than 0.60, wherein the amount of the above-mentioned functional groups is expressed by milliequivalent/g of the product. The novel porous and spherical carbonaceous product having its groups in the above-mentioned relationships exhibits a specific adsorptive capability in living bodies and particularly useful as a pharmaceutical for treating diseases of the liver and kidney after administered orally.

Porous and spherical carbonaceous product

A process for producing spherical particles of activated carbon having a low susceptibility to dusting.

Spherical activated carbon having low dusting property and high physical

An absorbant for use in artificial organs which is obtained by mixing and dissolving pitch with an aromatic compound and a polymer or copolymer of a chain hydrocarbon, dispersing the resultant mixture in water giving rise to beads and subjecting these beads to a series of treatments of removing of the aromatic hydrocarbon, infusibilizing, carbonizing and activating.

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Tokyo, Japan

Kuniaki Hino