US 12,448,507 B1
Composite board including core and capstock, and associated method
Nicholas Tomko, Chicago, IL (US); and Evan Kemp, Chicago, IL (US)
Assigned to The Azek Group LLC, Chicago, IL (US)
Filed by THE AZEK GROUP LLC, Chicago, IL (US)
Filed on Apr. 3, 2024, as Appl. No. 18/625,607.
Int. Cl. C08L 27/06 (2006.01); B32B 27/06 (2006.01); B32B 27/20 (2006.01); B32B 27/22 (2006.01); B32B 27/30 (2006.01); B32B 27/36 (2006.01); C08L 25/08 (2006.01); C08L 25/12 (2006.01); C08L 33/20 (2006.01)
CPC C08L 27/06 (2013.01) [B32B 27/06 (2013.01); B32B 27/20 (2013.01); B32B 27/22 (2013.01); B32B 27/302 (2013.01); B32B 27/304 (2013.01); B32B 27/308 (2013.01); B32B 27/36 (2013.01); C08L 25/12 (2013.01); C08L 33/20 (2013.01); B32B 2250/02 (2013.01); B32B 2270/00 (2013.01); B32B 2274/00 (2013.01); B32B 2325/00 (2013.01); B32B 2607/00 (2013.01); C08L 25/08 (2013.01); C08L 2205/02 (2013.01); C08L 2205/035 (2013.01); C08L 2207/04 (2013.01); Y10T 428/31935 (2015.04)] 3 Claims
OG exemplary drawing
 
1. A composite board, comprising:
a core; and
a capstock positioned to at least partially cover the core,
wherein the capstock consists of, based on a total weight of the capstock:
30 wt. % to 45 wt. % of polyvinyl chloride (PVC);
20 wt. % to 30 wt. % of acrylonitrile-styrene-acrylate (ASA);
15 wt. % to 20 wt. % of styrene-acrylonitrile (SAN); and
10 wt. % to 25 wt. % of a polymeric plasticizer,
wherein the polymeric plasticizer consists of a ketone ethylene ester terpolymer.