METHOD OF PRODUCING NANOPOROUS POLYMERS WITH OPEN PORES Russian patent published in 2010 - IPC C08J5/00 D01F6/00 B82B1/00 D01F6/04 C08J5/18 

FIELD: chemistry.

SUBSTANCE: method involves uniaxial drawing of a polymer article with an elongated shape in a medium with subsequent removal of the medium from the volume of the article while holding the article in a pulled state in the drawing direction. The polymer used is a partially crystalline polymer with degree of crystallinity over 10%. The medium used is a gas in a supercritical state, and the medium is removed from the volume of the article by lowering pressure to a value below the critical value. The polymer article with elongated shape used can be any object selected from a film, fibre, tape, pipe or rod.

EFFECT: invention simplifies the method of producing nanoporous polymers with open pores, reduces fire hazard and improves ecological indices of the method while retaining high parametre values of volume porosity and permeability of obtained polymers.

6 cl, 2 ex