Coated sand composition and method for producing same
AssigneeSumitomo Durez Company, Ltd.
InventorsYukio Saeki, Shigeru Nemoto, Yukio Tokunaga
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Abstract
A process for preparing resin coated sand for shell molding foundry operations is disclosed wherein the resin utilized is a phenolic resin containing a bromophenol. The resin coated sand has improved shake-out properties and is especially formulated for low melting metals such as aluminum and magnesium castings.
Claims20
A resin coated sand for shell molding foundry applications comprising foundry aggregates coated with a phenolic resin containing bromophenols, wherein the incorporating proportion range of bromophenols to 100 parts by weight phenolic resin is from about 0.2 to about 40 parts by weight.
A resin coated sand for shell molding foundry applications comprising foundry aggregates coated with a phenolic resin containing a lubricant and from about 0.2 to about 40 parts 2,4,6-tribromophenol per 100 parts phenolic resin.
A method for producing resin coated sand for shell molding foundry operations having improved shake-out properties comprising coated foundry aggregates with phenolic resin containing bromophenols, wherein the incorporating proportion range of bromophenols to 100 parts by weight phenolic resin resin is from about 0.2 to about 40 parts by weight.
A method for producing resin coated sand for shell molding foundry operations having improved shake-out properties comprising coating foundry aggregates with phenolic resin containing a lubricant and from about 0.2 to about 40 parts 2,4,6-tribromophenol per 100 parts phenolic resin.
Dependencies are inferred from the claim text.