Production of highly water-absorptive resin

Abstract

Abstract PURPOSE:To produce a highly water-absorptive resin excellent in water absorptivity, especially, absorptivity of saline water, by polymerizing acrylic acid (alkali metal salt) in the presence of a cationic polyfunctional monomer. CONSTITUTION:A highly water-absorptive resin is produced by polymerizing acrylic acid and/or an alkali metal acrylate in the presence of a cationic polyfunctional monomer of the formula (wherein R1 and R2 are each H or methyl, R3 and R4 are each a 1-3 C alkyl, Y is O or imino, Z is a 1-4 C alkylene and X is a halogen or an acid residue). The highly water-absorptive resin obtained in this way is excellent in water absorptivity, especially, absorptivity of saline water, and can be suitably used for paper napkins etc.

Inventors

• 👤 Yoshiharu Hashiguchi

Bibliographic Details