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:
Mar. 19, 2024
Filed:
Mar. 27, 2019
Sumitomo Seika Chemicals Co., Ltd., Hyogo, JP;
SUMITOMO SEIKA CHEMICALS CO., LTD., Hyogo, JP;
Abstract
Water-absorbing resin particles have a repulsion rate of 5% or more according to the formula (h−h)/h×100(%) when a cylinder with an inner diameter of 25.4 mm, which has a mesh-like bottom onto which 0.2 g of the water-absorbing resin particles are sprinkled, is placed in a container having ion exchange water in an amount of 30 times a mass of the water-absorbing resin particles, where hrepresents a free swelling height (mm) of the water-absorbing resin particles after 1 minute from initiation of water absorption, hrepresents a height (mm) of the water-absorbing resin particles after a load of 1.3×10Pa is applied to the water-absorbing resin particles for 1 minute after 1 minute from initiation of the water absorption, and hrepresents a height (mm) of the water-absorbing resin particles after 1 minute from release of the load applied when measuring h.