Kureha Chemical Industry Company, Limited

Kureha Corporation

Susumu Morimoto

Naohiro Sonobe

Hideyuki Yoshihara

Makoto Arakawa

Hiroyuki Hanatsuka

Michihito Ise

Hideyuki Yamato

Haruhisa Hayashi

Satoshi Mitsuhashi

An adsorbent for oral administration, characterized by comprising a spherical activated carbon, wherein a diameter is 0.01 to 1 mm, a specific surface area determined by Langmuir's adsorption equation is 1000 m/g or more, and a diffraction intensity ratio, an R value, determined by an equation (1):=()/()&#x2003;&#x2003;(1)wherein Iis a diffraction intensity when a diffraction angle (&#x3b8;) of an X-ray diffractometry is 15&#xb0;, Iis a diffraction intensity when a diffraction angle (&#x3b8;) of an X-ray diffractometry is 35&#xb0;, and Iis a diffraction intensity when a diffraction angle (&#x3b8;) of an X-ray diffractometry is 24&#xb0;, is 1.4 or more; and an adsorbent for an oral administration, characterized by comprising a surface-modified spherical activated carbon, wherein a diameter is 0.01 to 1 mm, a specific surface area determined by Langmuir's adsorption equation is 1000 m/g or more, a total amount of acidic groups is 0.40 to 1.00 meq/g, a total amount of basic groups is 0.40 to 1.10 meq/g, and a diffraction intensity ratio, an R value, determined by equation (1) is 1.4 or more. The adsorbents for oral administration exhibit a useful selective adsorbability, that is, a less adsorbability of useful substances in a body, and a greater adsorbability of toxic substances.

Adsorbent for oral administration

An adsorbent for oral administration, characterized by comprising a surface-modified spherical activated carbon, having a diameter of 0.01 to 1 mm, a specific surface area determined by Langmuir's adsorption equation of 1000 m/g or more, a total amount of acidic groups of 0.40 to 1.00 meq/g, a total amount of basic groups of 0.40 to 1.10 meq/g, and a diffraction intensity ratio, an R value, determined by equation (1) of 1.4 or more. The adsorbents for oral administration exhibit a useful selective adsorbability; that is, a lesser adsorbability of useful substances, and a greater adsorbability of toxic substances, in a body.

An adsorbent for an oral administration, comprising a porous spherical carbonaceous substance wherein a diameter is 0.01 to 1 mm, a specific surface area determined by a BET method is 700 m /g or more, a volume of pores having a pore diameter of 20 to 15000 nm is from not less than 0.04 mL/g to less than 0.10 mL/g, a total amount of acidic groups is 0.30 to 1.20 meq/g, and a total amount of basic groups is 0.20 to 1.00 meq/g, is disclosed.

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Tokyo, Japan

Susumu Morimoto