Novel hydrogels based on polyvinyl alcohols and polyvinyl alcohol - copolymers

摘要

The present invention relates to hydrogels, comprising polyvinyl alcohols and / or polyvinyl alcohol - copolymers with special geometries, a method for the production of the hydrogels and the use of the hydrogels as materials in the biomedical and pharmaceutical region for the production of contact lenses, for the controlled release of active compounds, as a carrier material for the inclusion of - immobilized biocatalysts, as a carrier material for transition metal catalysts, as a material for the production of reactive membranes, as an additive to drilling fluids, as the urging means in the case of the oil production, as an additive for cement and as additives for highly viscous liquids, such as, for example, petroleum, for improving the flow behavior and to the faster transport as well as as a constituent of cosmetic articles.