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:
Nov. 24, 2009
Filed:
Mar. 24, 2005
Yorimichi Dairoku, Himeji, JP;
Yoshio Irie, Himeji, JP;
Shinichi Fujino, Himeji, JP;
Yasuhiro Fujita, Himeji, JP;
Kenji Tada, Himeji, JP;
Hiroki Inoue, Kyoto, JP;
Makoto Nagasawa, Himeji, JP;
Hirofumi Shibata, Himeji, JP;
Yorimichi Dairoku, Himeji, JP;
Yoshio Irie, Himeji, JP;
Shinichi Fujino, Himeji, JP;
Yasuhiro Fujita, Himeji, JP;
Kenji Tada, Himeji, JP;
Hiroki Inoue, Kyoto, JP;
Makoto Nagasawa, Himeji, JP;
Hirofumi Shibata, Himeji, JP;
Nippon Shokuba Co., Ltd., Osaka, JP;
Abstract
The present invention relates to a method for continuous production of a water-absorbent resin by use of an continuous polymerization device having a charge part of a monomer aqueous solution; an endless belt on which the monomer and a hydropolymer formed are conveyed; and a discharge part of the hydropolymer, wherein the continuous polymerization device has side walls and a ceiling, and the space ratio in the device represented by the equation, 'space ratio in the device=B/A', is in the range of 1.2 to 20. In the equation, A is a maximum cross-sectional area (cm) of the hydropolymer during the polymerization in the width direction of the endless belt, and B is a maximum cross-sectional area (cm) of the space between the endless belt of the continuous polymerization device and the ceiling of the continuous polymerization device in the width direction of the endless belt.