PRODUCTION OF MEDICAL ADSORBENT COMPRISING ACTIVATED CARBON WHICH IS OBTAINED BY CARBONIZING SPHERICAL PHENOL RESIN AND THEN ACTIVATING HAVING EFFECT OF SELECTIVELY ABSORBING IONIC ORGANIC COMPOUNDS WHILE INHIBITING ABSORPTION OF POLYMERS NECESSARY FOR BODY SUCH AS ENZYMES AND POLYSACCHARIDES

PURPOSE: A medical adsorbent comprising activated carbon which is obtained by carbonizing spherical phenol resin and then activating and controlled in the specific surface area, pore volume, mean pore diameter, particle diameter and amount of surface oxide is provided. It can selectively absorb ioni...

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Bibliographic Details
Main Authors UMEKAWA TOMOMICHI, INAGAKI TOMOMI, KOHSAKA TSUTOMU, HATORI TOH ICHIRO, HIBI KEITA
Format Patent
LanguageEnglish
Korean
Published 30.07.2004
Edition7
Subjects
CHEMISTRY
COMPOUNDS THEREOF
HUMAN NECESSITIES
HYGIENE
INORGANIC CHEMISTRY
MEDICAL OR VETERINARY SCIENCE
METALLURGY
NON-METALLIC ELEMENTS
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS
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Summary:PURPOSE: A medical adsorbent comprising activated carbon which is obtained by carbonizing spherical phenol resin and then activating and controlled in the specific surface area, pore volume, mean pore diameter, particle diameter and amount of surface oxide is provided. It can selectively absorb ionic organic compounds such as causative substances of uremia and produces minimal side-effects such as constipation while inhibiting absorption of polymers necessary for the body such as enzymes and polysaccharides as compared to conventional products. CONSTITUTION: The medical adsorbent is prepared by the steps of: obtaining activated carbon by carbonizing a spherical phenol resin in a nitrogen atmosphere at 400 to 1,000 deg.C; activating the carbonized spherical phenol resin at 800 to 1,000deg.C; washing the activated phenol resin with dilute hydrochloric acid; heating the activated phenol resin at 150 to 1,000deg.C in a mixed gas comprising oxygen and nitrogen and then straining the heated phenol resin. The activated carbon has a specific surface area of 500 to 2,000 m¬2/g, a pore volume of 0.2 to 1.0mL/g and a packing density of 0.5 to 0.75g/mL. The spherical phenol resin has a specific surface area of 800 to 2,000 m¬2/g, a pore volume of 1.7 to 2.0mL/g, a maximum particle diameter of 425μm or less and a mean particle diameter of 350μm or less.
Bibliography:Application Number: KR20040002950