PROTECTIVE DIFFUSE POLYMER MEMBRANE AND COMPOSITION FOR PREPARING IT Russian patent published in 2013 - IPC A62B17/00 

FIELD: medicine.

SUBSTANCE: invention refers to preparing protective materials on the basis of diffuse polymer membranes, as well as to compositions for preparing them. The protective diffuse polymer membrane is made of a composite material containing polyamidoimide and polyvinylpyrrolidone in the following proportions (wt %): polyamidoimide - 30-70, polyvinylpyrrolidone - 70-30 and has a thickness of 10-300 mcm. Polyamidoimide has the following bond formula: . The membrane is presented either in the form of a film, or in the form of a coating. The composition for preparing the protective diffuse polymer membrane represents 10-20% polyamidoimide and polyvinylpyrrolidone in a aprotonic polar solvent in the following proportions (wt %): polyamidoimide - 30-70, polyvinylpyrrolidone - 70-30.

EFFECT: declared polymer membrane protects against the toxic and hazardous chemical substances in the form of vapours, aerosols and liquids, and is characterised by high vapour permeability (not less than 2500 g/m² a day) to provide the protective environment comfort.

5 cl, 1 dwg