	US 12,031,005 B2
	Polyurethane foam and methods of forming the same
Qing Gao, Shanghai (CN); and Yue Dong, Shanghai (CN)
Assigned to SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION, Solon, OH (US)
Filed by SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
Filed on Sep. 15, 2021, as Appl. No. 17/447,701.
Claims priority of provisional application 63/089,599, filed on Oct. 9, 2020.
Claims priority of application No. 202010997685.7 (CN), filed on Sep. 21, 2020.
Prior Publication US 2022/0089826 A1, Mar. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C08J 9/00 (2006.01); C08G 18/40 (2006.01); C08G 18/42 (2006.01); C08G 18/48 (2006.01)

CPC C08J 9/00 (2013.01) [C08G 18/4018 (2013.01); C08G 18/42 (2013.01); C08G 18/4829 (2013.01); C08J 2375/04 (2013.01)]

19 Claims

1. A polyurethane foam comprising:

a first polyol component comprising a polyether polyol having a functionality of at least about 5; and

a second polyol component comprising at least one component selected from the group of a polyether polyol having a functionality of not greater than about 4 and a polyester polyol having a functionality of not greater than about 4,

wherein the first polyol component comprises an OH number of at least about 400 KOH mg/g and not greater than about 450 KOH mg/g,

wherein the polyurethane foam comprises a density of at least about 150 kg/m³, and

wherein the polyurethane foam comprises a compression curve ratio CFD₇₀/CFD₁₀of not greater than about 20, where CFD₇₀is equal to the compression force deflection (CFD) of the polyurethane foam measured at a 70% compression ratio and CFD₁₀is equal to the compression force deflection (CFD) of the polyurethane foam measured at a 10% compression ratio.