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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.:

US 10189007 B1

PDFFull Text
Date of Patent:
Jan. 29, 2019

Filed:

Oct. 14, 2014

Method for producing porous cellulose beads and adsorbent employing same

Applicant:

Kaneka Corporation, Osaka-shi, JP;

Inventors:

Asuka Hayashi, Takasago, JP;

Yoshikazu Kawai, Takasago, JP;

Ken-ichiro Morio, Osaka, JP;

Assignee:

KANEKA CORPORATION, Osaka-shi, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Clare M Perrin

Int. Cl.
CPC ...
B01J 20/24 (2006.01); C07K 17/12 (2006.01); B01J 20/285 (2006.01); B01J 20/30 (2006.01); B01J 20/32 (2006.01); B01J 20/286 (2006.01); C08J 9/28 (2006.01); C08B 15/10 (2006.01); C08J 9/16 (2006.01); C07K 1/14 (2006.01); C07K 1/22 (2006.01);
U.S. Cl.
CPC ...
B01J 20/24 (2013.01); B01J 20/285 (2013.01); B01J 20/286 (2013.01); B01J 20/305 (2013.01); B01J 20/3085 (2013.01); B01J 20/3212 (2013.01); B01J 20/3274 (2013.01); C07K 17/12 (2013.01); C08B 15/10 (2013.01); C08J 9/28 (2013.01); B01J 20/3217 (2013.01); B01J 20/3293 (2013.01); C07K 1/145 (2013.01); C07K 1/22 (2013.01); C08J 9/16 (2013.01); C08J 2201/026 (2013.01); C08J 2201/0547 (2013.01); C08J 2301/00 (2013.01);
Abstract

The objective of the present invention is to provide a method for easily and efficiently producing cellulose beads which have pore shape suitable for an adsorbent and of which adsorption performance is excellent without using highly toxic and highly corrosive auxiliary raw material and without industrially disadvantageous cumbersome step. The method for producing porous cellulose beads according to the present invention is characterized in comprising (a) the step of preparing a fine cellulose dispersion by mixing a low temperature alkaline aqueous solution and cellulose, (b) the step of preparing a mixed liquid by adding a crosslinking agent to the fine cellulose dispersion, (c) the step of preparing an emulsion by dispersing the mixed liquid in a dispersion medium, (d) the step of contacting the emulsion with a coagulating solvent.

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