	US 12,258,434 B2
	Expanded foam solution and thermosetting expanded foam having excellent flame retardancy using the same
Jong Hyun Yoon, Seoul (KR); Sang Yun Lee, Seoul (KR); and Dae Woo Nam, Seoul (KR)
Assigned to KYUNG DONG ONE CORPORATION, Seoul (KR)
Filed by KYUNG DONG ONE CORPORATION, Seoul (KR)
Filed on Jun. 16, 2023, as Appl. No. 18/336,277.
Application 18/336,277 is a division of application No. 17/225,742, filed on Apr. 8, 2021, granted, now 11,976,155.
Application 17/225,742 is a continuation in part of application No. PCT/KR2019/013393, filed on Oct. 11, 2019.
Claims priority of application No. 10-2018-0121633 (KR), filed on Oct. 12, 2018.
Prior Publication US 2023/0331897 A1, Oct. 19, 2023
Int. Cl. C08G 18/20 (2006.01); C08G 18/22 (2006.01); C08G 18/42 (2006.01); C08G 18/48 (2006.01); C08G 18/76 (2006.01); C08J 9/00 (2006.01); C08K 3/34 (2006.01); C08K 5/5415 (2006.01); C08K 7/26 (2006.01); C08K 9/06 (2006.01)

CPC C08G 18/2036 (2013.01) [C08G 18/225 (2013.01); C08G 18/42 (2013.01); C08G 18/48 (2013.01); C08G 18/76 (2013.01); C08J 9/008 (2013.01); C08K 3/346 (2013.01); C08K 5/5415 (2013.01); C08K 7/26 (2013.01); C08K 9/06 (2013.01); C08G 2110/005 (2021.01); C08J 2203/10 (2013.01); C08J 2375/06 (2013.01); C08J 2375/08 (2013.01); C08K 2201/005 (2013.01); C08K 2201/011 (2013.01)]

5 Claims

1. A thermosetting expanded foam having a flame retardancy which is obtained by curing an expanded foam solution with an isocyanate-based compound as a curing agent, and which is increased in height by 3 mm or more due to expansion of char and has a total weight loss of 6.5 g or less, after 5 minutes of burning according to an ISO 5660-1 burning test,

wherein

the expanded foam solution comprises:

at least one polyol-based compound;

a mixture comprising water; and

a mixture solution containing a nanoclay and having a viscosity of 5,000 cps or less, wherein the nanoclay has a water content of 0.5 to 10%.