ADDITIVE FOR FORMING SAND MOLD, SAND COMPOSITION FOR FORMING SAND MOLD, METHOD FOR PRODUCING SAND MOLD, AND SAND MOLD
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United States of America Patent
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Nov 24, 2022
app pub date -
Jun 8, 2020
filing date -
Jun 8, 2020
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Abstract
The additive composition of the present invention is one blended in a sand composition which is subjected to foaming to mold a sand mold, and includes (A) an alkylsulfonate metal salt having an alkyl group with 9 to 22 carbon atoms. The additive composition may further include at least one component selected from a group consisting of (B) an alkylsulfate metal salt, (C) a polyoxyalkylene alkyl ether sulfate metal salt, and (D) an alkylbenzene sulfonate metal salt.
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