ELASTIC MEMBRANE Russian patent published in 2022 - IPC C08J5/18 B32B27/12 B32B27/40 

FIELD: textile industry.

SUBSTANCE: present invention relates to a group of inventions: elastic membrane, elastic fabric, and the use of elastic membrane. Elastic membrane contains elastomer containing thermoplastic elastomer. Thermoplastic elastomer includes polyurethane elastomer based on: 11-79% by weight of a mixture of at least one diol and at least one aromatic diisocyanate, 21-89% by weight of at least one compound with at least two isocyanate-reactive groups, which is polyol based on polyester. Elastic membrane has relative elongation at break of more than 150%. Elastic membrane has pores with an average diameter of less than 2000 nm. Elastic fabric includes fabric and at least one applied elastic membrane with total relative elongation at break of more than 150%. Elastic membrane is used for the manufacture of clothing, shoes, boots, protective suit, tent, awning, backpack, and umbrella.

EFFECT: development of thermoplastic materials with good water resistance and permeability for water steam, having an elevated elasticity module and increased relative elongation at break.

8 cl, 4 tbl, 5 ex