POLYMER MATERIAL WITH MULTIMODAL PORE DISTRIBUTION BY SIZE Russian patent published in 2017 - IPC C08J9/00 C08L67/04 C08L23/00 C08J5/18 D01F6/00 B32B27/04 B82Y30/00 

FIELD: technological processes.

SUBSTANCE: material is formed by applying a force to a thermoplastic composition comprising a continuous phase comprising first and second additives in the form of discrete domains dispersed in a continuous phase. The continuous phase comprises a matrix polymer in which a plurality of micropores having an average cross-sectional dimension of from about 0.5 to about 30 micrometers is formed on and/or around the first domains and in which a plurality of nanopores having an average A cross-sectional dimension of about 50 to about 500 nanometers. The matrix polymer has a glass transition temperature of 0°C or more.

EFFECT: achieving a unique multimodal porous structure as a result of the use of specific types of inclusion additives and careful control over how such additives are dispersed in the polymer matrix.

29 cl, 14 dwg, 1 tbl, 4 ex