Patent ID: 8063265
Filing Date: 2011-11-22
Classification: A61L,Y10S,Y10T

Abstract:
1. A hydrogel having a floatability and having a thickening capability wherein the hydrogel thickens from 40% to 90% of an aqueous solution or suspension starting from the surface of the solution or suspension and the hydrogel thickens the rest of the solution or suspension starting from the bottom of a container for the solution or suspension, said hydrogel comprising superabsorbent polymer particles coated with 0.05% to 1%, by weight, of a hydrophobic compound, wherein the hydrophobic compound is a hydrophobicized silica or a hydrophobicized mixture of silicas and aluminas, and 0.05% to 4%, by weight, of a multivalent cation; and said hydrogel having a solidification time of less than 120 seconds upon contact with the solution or suspension and having a blood absorbance of at least 10 g/g.