The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 03, 1976
Filed:
Apr. 09, 1973
Tetsuhiro Kusunose, Nobeoka, JA;
Tatsuo Ishikawa, Nobeoka, JA;
Norio Akimoto, Nobeoka, JA;
Noboru Fukuma, Nobeoka, JA;
Kazuyoshi Imamura, Nobeoka, JA;
Asahi Kasei Kogyo Kabushiki Kaisha, Osaka, JA;
Abstract
The present invention is to provide a method of producing an adsorbent composed of micro-fibrils, comprising the steps of mixing two synthetic polymers in a mixing ratio of 20/80 - 80/20, both of said polymers being incompatible with each other when they are intimately mixed, subjecting the mixture in molten state to an extrusion molding to shape the article in the form of threads, ropes or films where at least one of the polymers assumes the forms of micro-fibrils, and thereafter treating the shaped article with a solvent which is incapable of dissolving or decomposing one polymer but capable of dissolving or decomposing the other constituent polymer. The polymer adsorbent obtained by the above method is characterized by superior adsorbing activity and high treating efficiency and can be used for a wide range of purpose of adsorption.