US 11,718,764 B2
Coating compositions, elastic barrier coatings formed therefrom, and methods of applying such coatings
Roxalana L. Martin, Pittsburgh, PA (US); Dennis L. Faler, North Huntingdon, PA (US); Jennifer Tamaki Jordan, Natrona Heights, PA (US); Mark P. Bowman, New Kensington, PA (US); Shanti Swarup, Allison Park, PA (US); Xiangling Xu, Pittsburgh, PA (US); Hongying Zhou, Allison Park, PA (US); and Mark A. Tucker, Allison Park, PA (US)
Assigned to PPG INDUSTRIES OHIO, INC., Cleveland, OH (US)
Appl. No. 16/86,232
Filed by PPG Industries Ohio, Inc., Cleveland, OH (US)
PCT Filed Jan. 18, 2017, PCT No. PCT/US2017/013913
§ 371(c)(1), (2) Date Sep. 18, 2018,
PCT Pub. No. WO2017/180220, PCT Pub. Date Oct. 19, 2017.
Claims priority of provisional application 62/310,204, filed on Mar. 18, 2016.
Prior Publication US 2020/0239730 A1, Jul. 30, 2020
Int. Cl. B05D 1/02 (2006.01); B05D 3/02 (2006.01); B05D 3/06 (2006.01); B05D 7/00 (2006.01); C08K 3/013 (2018.01); C08K 5/00 (2006.01); C08L 33/10 (2006.01); C08L 75/02 (2006.01); C09D 175/06 (2006.01)
CPC C09D 175/06 (2013.01) [B05D 1/02 (2013.01); B05D 3/02 (2013.01); B05D 3/061 (2013.01); B05D 7/56 (2013.01); C08K 3/013 (2018.01); C08K 5/0025 (2013.01); C08L 33/10 (2013.01); C08L 75/02 (2013.01); C08K 2201/008 (2013.01); C08L 2201/14 (2013.01); C08L 2203/16 (2013.01); C08L 2205/03 (2013.01); C08L 2207/53 (2013.01); C08L 2312/00 (2013.01)] 19 Claims
 
1. A coating composition for forming an elastic barrier coating, the coating composition comprising:
an aqueous carrier medium;
at least a first polymer comprising: (i) a barrier segment comprising aromatic groups and urethane linkages, urea linkages, or a combination thereof, having a glass transition temperature of greater than 0° C.; and (ii) an elastomeric segment that is different from (i) having a glass transition temperature of less than 0° C., wherein the barrier segment comprises at least 30 weight % of the polymer based on the total solids weight of the polymer; and
polymeric core-shell particles dispersed in the aqueous carrier medium.