초록 ▼

Foamed water-swellable polymeric water absorbent materials are prepared by contacting a polymer capable of having a water-swellable character and containing acid moieties in acid form with a blowing agent such as sodium bicarbonate, which blowing agent is capable of neutralizing the acid moieties of

Foamed water-swellable polymeric water absorbent materials are prepared by contacting a polymer capable of having a water-swellable character and containing acid moieties in acid form with a blowing agent such as sodium bicarbonate, which blowing agent is capable of neutralizing the acid moieties of the polymer. The foamed polymers are useful in a wide variety of water absorbent applications.

대표청구항 ▼

A process for preparing a foamed water-swellable polymeric water absorbent material, said process comprising contacting an aqueous polymer dispersion said polymer capable of having a water-swellable character and containing a functionally effective amount of pendant acid moieties in acid form with a

A process for preparing a foamed water-swellable polymeric water absorbent material, said process comprising contacting an aqueous polymer dispersion said polymer capable of having a water-swellable character and containing a functionally effective amount of pendant acid moieties in acid form with a carbon dioxide yielding compound decomposeable blowing agent which is capable of neutralizing an effective amount of pendant acid moieties.