| abstract |
A water absorbent material, in the form of a foam, which has a functionally effective amount of a preneutralized hydrophilic polymer capable of having a water-swellable character, and a blowing agent. Such a water absorbent material is prepared by contacting a solution of the hydrophilic polymer having a water-swellable character and a blowing agent, and then heating the composition until it is foamed. |