초록 ▼

A predetermined mass comprising an acrylate salt and acrylamide is exposed to a controlled intensity and dose of ionizing radiation effecting simultaneous cross-linking and polymerization thereof to form a polyelectrolyte hydrogel. The resulting hydrogel is an insoluble hydrophilic copolymer which c

A predetermined mass comprising an acrylate salt and acrylamide is exposed to a controlled intensity and dose of ionizing radiation effecting simultaneous cross-linking and polymerization thereof to form a polyelectrolyte hydrogel. The resulting hydrogel is an insoluble hydrophilic copolymer which can contain or when dried absorb large quantities of aqueous fluids.

대표청구항 ▼

A method of preparing an insoluble polyelectrolyte hydrogel capable of absorbing more than about 20 times its weight in aqueous solution which comprises: forming a predetermined mass comprised of a mixture of an acrylate salt and acrylamide in a ratio of acrylate salt to acrylamide between about 0.3

A method of preparing an insoluble polyelectrolyte hydrogel capable of absorbing more than about 20 times its weight in aqueous solution which comprises: forming a predetermined mass comprised of a mixture of an acrylate salt and acrylamide in a ratio of acrylate salt to acrylamide between about 0.3 to 1 and about 20 to 1, the predetermined mass having a pH in solution between about 6 and about 12; and exposing the predetermined mass to a dose of from about 0.2 to about 10 Megarads of ionizing radiation at a dose rate between about 0.001 Megarads per second and about 10 Megarads per second for a time period sufficient to form said hydrogel which is substantially free of unreacted monomer.