| abstract |
The present invention provides a method for arbitrarily adjusting the crosslinking rate during the production of a hydrogel body using a (meth) acrylic acid polymer used for a transdermally absorbable preparation, a cosmetic, a cooling sheet or the like. When a (meth) acrylic acid polymer (component A) is mixed with an aluminum-containing compound (component B) and water (component C) to crosslink the (meth) acrylic acid polymer, It is characterized in that at least one metal salt (component D) selected from the group consisting of metal salts containing monovalent or divalent metal ions is added to adjust the crosslinking rate of the (meth) acrylic acid polymer. A method for producing a (meth) acrylic acid hydrous gel. [Selection figure] None |