US 12,403,681 B2
Flame resistant composite fabric
Laurence Fitch Ellis, Wauregan, CT (US); Thomas C. Colasanto, Wauregan, CT (US); David A. Capwell, Kenyon, RI (US); and Barbara Rell Young, New York, NY (US)
Assigned to Brookwood Companies Incorporated, New York, NY (US)
Filed by Brookwood Companies Incorporated, New York, NY (US)
Filed on Feb. 12, 2020, as Appl. No. 16/789,254.
Claims priority of provisional application 62/804,315, filed on Feb. 12, 2019.
Prior Publication US 2020/0254740 A1, Aug. 13, 2020
Int. Cl. B32B 27/12 (2006.01); B32B 5/02 (2006.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); B32B 27/40 (2006.01); B32B 33/00 (2006.01); B32B 37/12 (2006.01); B32B 37/16 (2006.01); B32B 37/26 (2006.01); B32B 38/08 (2006.01)
CPC B32B 27/12 (2013.01) [B32B 5/024 (2013.01); B32B 7/12 (2013.01); B32B 27/08 (2013.01); B32B 27/40 (2013.01); B32B 33/00 (2013.01); B32B 37/12 (2013.01); B32B 37/16 (2013.01); B32B 37/26 (2013.01); B32B 38/08 (2013.01); B32B 2250/05 (2013.01); B32B 2250/40 (2013.01); B32B 2260/023 (2013.01); B32B 2260/04 (2013.01); B32B 2262/0261 (2013.01); B32B 2437/00 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A flame-retardant fabric composite comprising, in order:
(a) a first woven nylon fabric sheet, optionally impregnated with thiourea formaldehyde flame-retardant and/or a fluorinated durable water repellant (DWR);
(b) a first flame-retardant polyurethane polymer layer;
(c) a thermoplastic polyurethane (TPU) layer;
(d) a second flame-retardant polyurethane polymer layer;
(e) a second woven nylon fabric sheet, optionally impregnated with thiourea formaldehyde flame-retardant and/or a fluorinated durable water repellant (DWR);
(f) a first thermosetting polymer adhesive layer disposed between said first flame-retardant polymer layer and said thermoplastic polyurethane; and
(g) a second thermosetting polymer adhesive layer disposed between said thermoplastic polyurethane and said second flame-retardant polyurethane polymer;
wherein said first and second flame-retardant polyurethane polymer layers each independently comprise (1) an intrinsically flame-retardant thermoset polyurethane polymer comprising one or more halogenated monomers, and (2) a flame-retardant additive comprising one or more of a brominated flame-retardant, antimony trioxide, aluminum hydroxide, or melamine or a derivative thereof, and
the flame-retardant fabric composite is characterized by an absence of drips in the ASTM D6413 Vertical Flame Test.