Process for hydrolyzing and neutralizing a crosslinked polymer of maleic anhydride and a C.sub.1 -C.sub.5 alkyl vinyl ether, optionally with a hydrophobic monomer, substantially instantly at room temperature

摘要

A process for hydrolyzing and neutralizing a crosslinked polymer of maleic anhydride and a C.sub.1 -C.sub.5 alkyl vinyl ether, and, optionally a hydrophobic monomer, in anhydride form substantially instantaneously in water at room temperature, which comprises reacting about 0.1-4% by weight of the crosslinked polymer in water at room temperature with ammonium hydroxide base, with stirring, to form a gel solution.