US 12,410,340 B1
Breathable coating compositions
Thomas Colasanto, Tolland, CT (US)
Assigned to BROOKWOOD COMPANIES INCORPORATED, New York, NY (US)
Filed by Brookwood Companies Incorporated, New York, NY (US)
Filed on Oct. 18, 2019, as Appl. No. 16/657,968.
Claims priority of provisional application 62/748,249, filed on Oct. 19, 2018.
Int. Cl. C09D 175/04 (2006.01); B32B 37/00 (2006.01); B32B 37/12 (2006.01)
CPC C09D 175/04 (2013.01) [B32B 37/025 (2013.01); B32B 37/12 (2013.01); B32B 2264/0292 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A coating composition for forming a polymeric coating on a substrate comprising:
(a) a dispersion of polyurethane particles in liquid media, wherein said polyurethane particles are present in said dispersion in an amount sufficient to coalesce to form a continuous and non-porous film upon removal of said media, and
(b) a secondary polymer;
dispersed in the liquid media; wherein said secondary polymer is polyethyleneimine and has a molecular weight of greater than 100,000 g/mol;
wherein the substrate is a woven or knitted fabric and
said substrate with said polymeric coating has a moisture vapor transmission rate within 0% and 30% of an otherwise identical uncoated substrate at 90° F. and 90% humidity.