US 12,152,189 B2
Surfactant composition for foaming sand
Norihiro Sugaya, Amagasaki (JP); Hiroyuki Komiya, Amagasaki (JP); Munehiro Yamada, Amagasaki (JP); Hirotsune Watanabe, Miyoshi (JP); and Shogo Izumi, Toyota (JP)
Assigned to NOF CORPORATION, Tokyo (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Appl. No. 17/615,385
Filed by NOF CORPORATION, Tokyo (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
PCT Filed Jun. 4, 2020, PCT No. PCT/JP2020/022084
§ 371(c)(1), (2) Date Nov. 30, 2021,
PCT Pub. No. WO2020/246538, PCT Pub. Date Dec. 10, 2020.
Claims priority of application No. 2019-106698 (JP), filed on Jun. 7, 2019.
Prior Publication US 2022/0228067 A1, Jul. 21, 2022
Int. Cl. B22C 1/10 (2006.01); C09K 23/00 (2022.01); C09K 23/04 (2022.01); C09K 23/08 (2022.01); C09K 23/18 (2022.01)
CPC C09K 23/018 (2022.01) [B22C 1/10 (2013.01); C09K 23/04 (2022.01); C09K 23/08 (2022.01); C09K 23/18 (2022.01)] 1 Claim
 
1. A surfactant composition for a foamed sand, said surfactant composition comprising:
80 to 99.8 mass % of a compound (A) represented by the following formula (1);
0.1 to 10 mass % of a compound (B) represented by the following formula (2); and
0.1 to 10 mass % of an amphoteric surfactant (C):
R1O-(EO)n—SO3M1  (1)
wherein in the formula (1),
R1 represents a hydrocarbon group having 6 to 22 carbons,
EO represents oxyethylene group,
n represents an average molar number added of said oxyethylene group, wherein n is a number from 1 to 10, and
M1 represents an alkali metal, an alkaline earth metal, ammonium, or an organic ammonium;
R2O—SO3M2  (2)
wherein in the formula (2),
R2 represents a hydrocarbon group having 6 to 22 carbons, and
M2 represents an alkali metal, an alkaline earth metal, ammonium, or an organic ammonium.