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. 19, 2013
Filed:
Jul. 09, 2008
Yuichiro Morimitsu, Hyogo, JP;
Masatoyo Yoshinaka, Tokyo, JP;
Shinji Kobayashi, Hyogo, JP;
Sumitomo Seika Chemicals Co., Ltd., Hyogo, JP;
Abstract
The present invention has its objective to provide a gelling agent for a battery, which forms a paste gel in a short period of time on dissolution in an alkaline electrolyte. The gel has less bubbles and a high gel density. The gelling agent for a battery comprises granular carboxyl group-containing polymer particles having a median particle diameter of 100 to 800 μm and a bulk density of 0.30 g/ml or more, and has a gel turbidity of 200 ppm or less and a gel density of 1.37 g/ml or more in a gel. The gel is prepared by adding 2 parts by mass of the granular carboxyl group-containing polymer particles to 98 parts by mass of 40% by mass of an aqueous potassium hydroxide solution.