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US 6,603,055 B2Granted
Poly (vinylamine) - base superabsorbent gels and method of manufacturing the same
AssigneeBASF SE
InventorsMichael A. Mitchell, Thomas W. Beihoffer, Raffat S. Sultana
Life of this patent
Estimating the term…
Abstract
Bi-component superabsorbent materials are disclosed. The superabsorbent materials comprise a mixture of about 20% to about 40%, by weight, poly(vinylamine) polymer or other basic resin and about 60% to about 80%, by weight of an acidic water-absorbing polymer, like polyacrylic acid.
Claims33
A superabsorbent material comprising:
- (a) about 20% to about 40%, by weight, of a lightly crosslinked poly(vinylamine), and
- (b) about 60% to about 80%, by weight, of an acidic water-absorbing resin, based on the total weight of the poly(vinylamine) and the acidic resin.
A superabsorbent material comprising about 20% to about 40%, by weight, of one or more basic water-absorbing resin and about 60% to about 80%, by weight, of one or more acidic resin, based on the total weight of the basic and acidic resin.
Dependencies are inferred from the claim text.