POLYMERIC POLYURETHANE COMPOSITION AND MULTILAYER MATERIAL BASED THEREON Russian patent published in 2013 - IPC C09D175/06 D03D1/02 B32B33/00 D06M15/564 

FIELD: chemistry.

SUBSTANCE: invention relates to polymer compositions for producing multilayer materials meant for making inflatable rescue equipment, including inflatable stairs for aircraft. The polymeric polyurethane composition contains a polyurethane polymer, filler - titanium dioxide and a fire-retardant - antimony trioxide, and additional filler in form of a layered nanosilicate which is organically modified with imidazole, and decabromodiphenyl oxide as a fire-retardant. Content of the organic modifier in the layered nanosilicate is at least 100% of the cationic volume capacity of the layered nanosilicate. The polymer composition can additionally contain polyisocyanate and ethyl acetate. The multilayer material contains a high-strength textile base coated with layers of said polymeric polyurethane composition on the front and back sides. The textile base used is a textile made from high-modulus SVM threads with density of 70-80 g/m² and breaking strength on the base and filling of at least 1200 kg/cm². The multilayer material has density of 220-270 g/m² and is air-tight and self-extinguishing.

EFFECT: obtaining a polyurethane composition and a multilayer material based on said composition, having high fire-safety (self-extinction), air-tightness, low density and hardness.

7 cl, 2 tbl, 5 ex