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. 26, 2024
Filed:
Dec. 12, 2019
Sumitomo Seika Chemicals Co., Ltd., Hyogo, JP;
Takashi Ito, Himeji, JP;
SUMITOMO SEIKA CHEMICALS CO., LTD., Hyogo, JP;
Abstract
Disclosed is water-absorbent resin particles including: a crosslinked polymer having a monomer unit derived from an ethylenically unsaturated monomer including at least one compound selected from the group consisting of (meth)acrylic acid and a salt thereof, in which a proportion of (meth)acrylic acid and a salt thereof is 70 to 100 mol % with respect to a total amount of monomer units in the crosslinked polymer, an artificial urine permeation speed when the water-absorbent resin particles are swollen tenfold is 1.0 g/min or more and 35.0 g/min or less, a water retention capacity for a physiological saline solution is 32 to 60 g/g, and a contact angle measured in a test performed in the order of i) and ii) is 70 degrees or smaller.