POLYOLEFIN MATERIAL HAVING A LOW DENSITY Russian patent published in 2018 - IPC C08J5/22 C08J9/00 C08L23/00 B29C55/00 B01D67/00 B01D71/26 

FIELD: construction materials.

SUBSTANCE: invention relates to a polyolefin material that is formed by solid state drawing of a thermoplastic composition containing a continuous phase that includes a polyolefin matrix polymer and nanoinclusion additive dispersed within the continuous phase as discrete nano-scale phase domains. Additives of nanoinclusions and microinclusions are a polymer. Method of forming a polyolefin material and an absorbent article comprising a polyolefin material are also described.

EFFECT: technical result is to ensure the limitation of the flow of fluids through the material, the high value of hydrostatic pressure, the permeability of the material to water vapor, and the low heat transfer coefficient.

37 cl, 25 dwg, 18 ex, 6 tbl