US 12,410,324 B2
Flame retardant clear coatings for building panels
Linzhu Zhang, Pittsburgh, PA (US); John E. Hughes, Lincoln University, PA (US); Michelle X. Wang, Lititz, PA (US); and Steven L. Masia, Lancaster, PA (US)
Assigned to AWI Licensing LLC, Wilmington, DE (US)
Filed by ARMSTRONG WORLD INDUSTRIES, INC., Lancaster, PA (US)
Filed on May 26, 2022, as Appl. No. 17/825,458.
Application 17/825,458 is a continuation of application No. 15/994,067, filed on May 31, 2018, granted, now 11,365,322.
Claims priority of provisional application 62/653,897, filed on Apr. 6, 2018.
Claims priority of provisional application 62/513,115, filed on May 31, 2017.
Claims priority of provisional application 62/513,126, filed on May 31, 2017.
Prior Publication US 2022/0289987 A1, Sep. 15, 2022
Int. Cl. C09D 5/18 (2006.01); B32B 21/00 (2006.01); C09D 7/61 (2018.01); C09D 7/63 (2018.01); C09D 133/06 (2006.01); C09D 175/14 (2006.01); E04B 1/94 (2006.01); E04B 9/04 (2006.01); E04B 9/16 (2006.01); E04B 9/36 (2006.01); E04C 2/52 (2006.01); C08F 230/08 (2006.01); C08K 3/22 (2006.01); C08K 3/38 (2006.01); E04C 2/26 (2006.01); E04C 2/296 (2006.01)
CPC C09D 5/18 (2013.01) [B32B 21/00 (2013.01); C09D 7/61 (2018.01); C09D 7/63 (2018.01); C09D 133/06 (2013.01); C09D 175/14 (2013.01); E04B 1/942 (2013.01); E04B 9/045 (2013.01); E04B 9/16 (2013.01); E04B 9/366 (2013.01); E04C 2/526 (2013.01); C08F 230/085 (2020.02); C08K 2003/2227 (2013.01); C08K 2003/387 (2013.01); E04C 2/26 (2013.01); E04C 2/296 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A barrier coating composition comprising:
a liquid carrier in an amount ranging from about 5 wt. % to about 50 wt. % based on the total weight of the barrier coating composition;
an organic blend comprising a first component and a second component, the first component comprising latex polymer and the second component being selected from polyurethane emulsion, wax emulsion, and alkyd emulsion; and
alumina trihydrate;
wherein the first component and the second component are present in a weight ratio ranging from about 2:1 to about 20:1;
wherein the latex polymer comprises acrylic polymer; and
wherein the latex polymer has a glass transition temperature of less than about 18° C.