	US 11,718,725 B2
	Method of forming foam material
Mao-Lin Hsueh, Tainan (TW); Yi-Zhen Chen, Tainan (TW); and Chih-Kuang Chang, Tainan (TW)
Assigned to INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu (TW)
Filed by INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu (TW)
Filed on Jan. 18, 2023, as Appl. No. 18/156,200.
Application 18/156,200 is a division of application No. 16/731,772, filed on Dec. 31, 2019, granted, now 11,603,444.
Prior Publication US 2023/0159719 A1, May 25, 2023
Int. Cl. C08J 9/08 (2006.01); C08J 9/00 (2006.01); C08K 7/22 (2006.01); C08K 3/34 (2006.01)

CPC C08J 9/08 (2013.01) [C08J 9/0066 (2013.01); C08J 2203/02 (2013.01); C08J 2369/00 (2013.01); C08K 3/34 (2013.01); C08K 7/22 (2013.01)]

6 Claims

1. A method of forming foam material, comprising:

mixing 100 parts by weight of a compound having cyclic carbonate groups and a foaming agent to form a foaming composition, wherein the foaming agent includes 3 to 13 parts by weight of carbamate salt and 15 to 65 parts by weight of amino compound; and

heating the foaming composition to 100° C. to 170° C. for decomposing the carbamate salt into CO₂and the amino compound, and the amino compound is reacted with the compound having cyclic carbonate groups to form a foam material.