Method and compositions for enhancing blood absorbence by superabsorbent materials
AssigneeWeyerhaeuser Company
InventorsMichael R. Hansen, Donald D. Halabisky
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Abstract
The blood absorbence properties, e.g., free swell blood absorbence capacity and after load blood absorbence capacity of superabsorbent materials is enhanced by combining the superabsorbent materials with enhancing agents which serve to enhance the blood absorbent properties thereof. The enhancing agents can be applied to the superabsorbent materials or they can be provided on a fibrous material to be combined with the superabsorbent materials. The enhancing agents are selected from materials that include functionalities that allow them to hydrogen bond to the superabsorbent material when the enhancing agent is applied directly thereto or combined with materials to which the enhancing agents have been applied.
Claims19
A modified superabsorbent material for absorbing blood comprising:
- a superabsorbent material;
- and
- an enhancing agent applied to the superabsorbent material as a liquid for increasing the blood absorbence properties of the superabsorbent material, the enhancing agent selected from the group consisting of polymeric enhancing agents, non-polymeric organic enhancing agents and combinations thereof nonreactive with each other, the enhancing agents comprising enhancing agent molecules, the enhancing agent molecules having at least one functional group capable of forming a hydrogen bond or a coordinate covalent bond with the superabsorbent material, the enhancing agent being at least partially bonded to the superabsorbent material through hydrogen bond or coordinate covalent bonds in the absence of covalent bonds between the enhancing agent and the superabsorbent material, and the enhancing agent present in an amount ranging from about 0.01% to 10% of the total weight of the superabsorbent material.
Dependencies are inferred from the claim text.