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:
Jun. 09, 2015
Filed:
Mar. 13, 2009
Method for producing particulate water-absorbing agent composed principally of water-absorbing resin
Kozo Nogi, Himeji, JP;
Sumio Okuda, Himeji, JP;
Keiji Inoue, Himeji, JP;
Kazumasa Konishi, Himeji, JP;
Toru Nishioka, Himeji, JP;
Yusuke Watanabe, Himeji, JP;
Kozo Nogi, Himeji, JP;
Sumio Okuda, Himeji, JP;
Keiji Inoue, Himeji, JP;
Kazumasa Konishi, Himeji, JP;
Toru Nishioka, Himeji, JP;
Yusuke Watanabe, Himeji, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
Provided is a production method for the particulate water-absorbing agent, which can collecting the fine powders generated during the producing process efficiently without worsening working environment, and also the particulate water-absorbing agent produced by the production method thereof. This production method includes (1) a polymerization step for obtaining a polymer gel, (2) a drying step for drying said polymer gel to obtain a particulate water-absorbing resin, (3) a classification step for sieving said particulate water-absorbing resin, (4) a surface cross-linking step for cross-linking the neighborhood of the surface of said particulate water-absorbing resin (5) a packaging step for filling a packaging material container with said particulate water-absorbing agent for packaging and (6) a transportation step for transporting the products produced in each of the steps to the other steps. In this production method, the fine powders contained in gas composed principally of air, in any of the steps, can be collected by use of a trapping material.