Multicomponent superabsorbent gel particles
AssigneeBASF SE
InventorsThomas W. Beihoffer, Michael A. Mitchell, Mark Anderson, Anthony S. Tomlin
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Abstract
Multicomponent superabsorbent gel particles are disclosed. The multicomponent particles comprise at least one acidic water-absorbing resin and at least one basic water-absorbing resin. Each particle contains at least one microdomain of the acidic resin in contact with, or in close proximity to, at least one microdomain of the basic resin. Blends of multicomponent superabsorbent gel particles with particles of a second water-absorbing resin also are disclosed. Improved diaper cores containing particles of the multicomponent superabsorbent gel particles also are disclosed.
Claims18
A superabsorbent material comprising:
- (a) multicomponent superabsorbent particles, wherein each multicomponent superabsorbent particle comprises at least one microdomain of a first water-absorbing resin in contact with, or in close proximity to, at least one microdomain of a second water-absorbing resin, and
- (b) particles of a second water-absorbing resin selected from the group consisting of an acidic water-absorbing resin, a basic water-absorbing resin, and mixtures thereof.
A method of claim 18 wherein the aqueous medium contains electrolytes.
A method of claim 19 wherein the electrolyte-containing aqueous medium is selected from the group consisting of urine, saline, menses, and blood.
Dependencies are inferred from the claim text.