Title:
SURFACTANT COMPOSITION FOR FOAMING SAND
Document Type and Number:
WIPO Patent Application WO/2020/246538
Kind Code:
A1
Abstract:
[Problem] To provide a surfactant composition for foaming sand that has exceptional rapid-foaming properties for foaming sand and improves the strength of a mold during molding manufacture of a sand core, etc., using the foaming sand. [Solution] This surfactant composition for foaming sand contains 80-99.8 mass% of a compound (A) in formula (1), 0.1-10 mass% of a compound (B) in formula (2), and 0.1-10 mass% of an ampholytic surfactant (C). Formula (1): R1O-(EO)n-SO3M1 (R1 indicates a C6-22 hydrocarbon group, EO is an oxyethylene group, n is a number from 1 to 10, and M1 is an alkali metal, an alkaline earth metal, ammonium, or organic ammonium.) Formula (2): R2O-SO3M2 (R2 is a C6-22 alkyl group, and M2 is an alakli metal, an alkaline earth metal, ammonium, or organic ammonium.)
Inventors:
SUGAYA NORIHIRO (JP)
KOMIYA HIROYUKI (JP)
YAMADA MUNEHIRO (JP)
WATANABE HIROTSUNE (JP)
IZUMI SHOGO (JP)
KOMIYA HIROYUKI (JP)
YAMADA MUNEHIRO (JP)
WATANABE HIROTSUNE (JP)
IZUMI SHOGO (JP)
Application Number:
PCT/JP2020/022084
Publication Date:
December 10, 2020
Filing Date:
June 04, 2020
Export Citation:
Assignee:
NOF CORP (JP)
TOYOTA MOTOR CO LTD (JP)
TOYOTA MOTOR CO LTD (JP)
International Classes:
B22C1/02; B22C1/10; B22C1/18
Domestic Patent References:
| WO2005089984A1 | 2005-09-29 |
Foreign References:
| JPS63115649A | 1988-05-20 | |||
| JP2001314939A | 2001-11-13 |
Other References:
"Tables of fatty acid compositions", 2015, article "Tables of Food Composition in Japan"
See also references of EP 3981525A4
See also references of EP 3981525A4
Attorney, Agent or Firm:
HOSODA Masutoshi et al. (JP)
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