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Foundry Resin Coated Sand Hot Process Machine

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Foundry Resin Coated Sand Hot Process Machine

A resin for coating sand and a resincoated sand produced therefrom wherein the resin is prepared by incorporating furan into a phenolic novolak resin. In the preferred practice the resin is produced by reaction of furfuryl alcohol with a phenolic compound at an acid pH to give a furfurylphenolic intermediate in a first step and then in a second step reacting the furfuryl

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