| abstract |
The present invention relates to hydrogels and their uses. More specifically, the present invention is a hydrogel comprising water and a polymer matrix, wherein the polymer matrix contains a monofunctional monomer having a hydrophilic group and one ethylenically unsaturated group, no ester bond, and an amide group and 3 to 6 It contains a copolymer of a polyfunctional monomer having two ethylenically unsaturated groups, and contains 40 to 95 parts by mass of the water and 5 to 60 parts by mass of the polymer matrix in 100 parts by mass of the hydrogel, and the hydrogel contains 25 parts by mass It relates to a hydrogel characterized in that it exhibits a degree of swelling of 650% or less when immersed in a 4M KOH aqueous solution at a temperature of ° C. for 14 days and uses thereof. |