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:
Sep. 16, 2025
Filed:
Aug. 28, 2019
Sekisui Kasei Co., Ltd., Osaka, JP;
Ryo Akuta, Osaka, JP;
Koichiro Okamoto, Osaka, JP;
SEKISUI KASEI CO., LTD., Osaka, JP;
Abstract
The present invention relates to a hydrogel and use thereof. More specifically, the present invention relates to a hydrogel comprising water and a polymer matrix, wherein the polymer matrix comprises a copolymer of a monofunctional monomer having a hydrophilic group and one ethylenic unsaturated group, and a polyfunctional monomer having no ester bond, and having an amide group and 3 to 6 ethylenic unsaturated groups, 40 to 95 parts by mass of the water, and 5 to 60 parts by mass of the polymer matrix are contained in 100 parts by mass of the hydrogel, and the hydrogel shows a swelling degree of 650% or less, when the hydrogel is immersed in a 4M aqueous KOH solution under a temperature of 25° C. for 14 days, and use thereof.