Patent ID: 7976859

Claim:
A method of producing a biocompatible, flexible, elastic volume-stabilized hydrophilic, cohesive aqueous polyvinylpyrrolidone (PVP) water-insoluble gel material comprising: (a) combining an amount of water with an amount of polyvinylpyrrolidone (PVP) and a minor amount of base compound forming a mixture wherein the mixture is free of cross-linking agents, the weight of PVP is from about 65% to 80% of the weight of the water and the PVP has a molecular weight-related viscosity between K 29 and K 90; (b) reacting the mixture of (a) at ambient temperature and pressure until a cohesive water-insoluble gel mass is formed; and (c) adding an amount of water to the reacted gel mass of (b) to maximize and stabilize the gel mass volume.