Patent ID: 6896903

Claim:
A bioadhesive composition formed by polymerising a homogeneous aqueous reaction mixture comprising from about 5% to about 50%, by weight of the reaction mixture, of at least one ionic water soluble monomer, from about 10% to about 50%, by weight of the reaction mixture, of at least one plasticiser which is not water, up to about 50%, by weight of the reaction mixture, of at least one non ionic water soluble monomer, up to about 40%, by weight of the reaction mixture, of water, up to about 10%, by weight of the reaction mixture, of at least one surfactant and from about 1% to about 30%, by weight of the reaction mixture, of at least one hydrophobic monomer and/or polymer, said composition comprising a polymerised material having a hydrophobic phase and a hydrophilic phase, wherein at least one of said hydrophobic and hydrophilic phases exists as discrete regions within said polymerised material and both phases do not simultaneously extend across the polymerised material.