| abstract |
The present invention relates to a hydrogel and its use. More specifically, the present invention is a hydrogel comprising water and a polymer matrix, wherein the polymer matrix has a monofunctional monomer having a hydrophilic group and one ethylenically unsaturated group, does not have an ester bond, and has an amide group and 3 to 6 A copolymer of a polyfunctional monomer having two ethylenically unsaturated groups is included, and in 100 parts by mass of the hydrogel, 40 to 95 parts by mass of the water and 5 to 60 parts by mass of the polymer matrix are contained, and the hydrogel is 25 It relates to a hydrogel characterized in that it exhibits a swelling degree of 650% or less when immersed in a 4M KOH aqueous solution at a temperature of °C for 14 days, and to a use thereof. |