SIMULATED LEATHER Russian patent published in 2007 - IPC D06N3/14 C09K21/02 

FIELD: leather and textile industry.

SUBSTANCE: invention relates to new layered materials with polymer coating and to a process of manufacture thereof, in particular to manufacture of simulated leathers, which can be employed as furniture upholstery in interiors motor cars, aircrafts, and water transport as well as technical- and special-destination articles. Simulated leather includes interconnected knitted backing made from polyamide threads and containing polyurethane and polyurethane film based on 4,4'-diphenylmethanediisocyanate and polytetramethylene ether glycol. Knitted backing further contains polyurethane threads "spandex" knitted through each second row at weight ratio of the latter to polyamide threads 1:(1-2). Polyurethane contained in knitted backing and polyurethane film additionally contain modifier: phosphorus-boron-containing polyol having following formula: , where R represents -CH₂-CH₂-, p=1, q=3, and m=2, while amount of polyurethane in knitted backing is 10-12% of the weight of backing.

EFFECT: improved complex of performance characteristics including fireproofness, high extensibility, and bond strength between layers, while preserving their high physicochemical properties of textile materials.

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