HYDROGEL COMPOSITIONS Russian patent published in 2006 - IPC A61L15/60 A61F13/02 

FIELD: medicine.

SUBSTANCE: composition has a) continuous hydrophobic phase and discrete hydrophilic phase; b) discrete hydrophilic phase and continuous hydrophilic phase; or c) is entirely built from continuous hydrophilic phase. The hydrophobic phase, when available, comprises hydrophobic polymer, preferentially hydrophobic adhesive sensitive to pressure, plastifying elastomer, resin for giving adhesiveness property and optional antioxidant. Discrete hydrophilic phase, when available, comprises cross-linked hydrophilic polymer, being cross-linked cellulose polymer like cross-linked sodium carboxymethyl cellulose. When containing hydrophilic phase, hydrogel compositions comprise cellulose ester or acrylate polymer or copolymer and hydrophilic polymer mixture with complementary oligomer showing hydrogen links formation ability included into the component phases. Films produced from hydrogel compositions containing or entirely built from said continuous hydrophilic phase, are transparent in particular cases and produceable by means of melt extrusion or fusion casting.

EFFECT: high cohesion strength without adhesion properties being lost.

63 cl, 16 tbl