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Proppants comprising a particle coated with a composition comprising bisphenol-aldehyde novolak resin, a bisphenol homopolymer or mixtures including such polymers are disclosed. Foundry sands comprising a particle coated with a composition comprising bisphenol-aldehyde novolak resin, a bisphenol hom

Proppants comprising a particle coated with a composition comprising bisphenol-aldehyde novolak resin, a bisphenol homopolymer or mixtures including such polymers are disclosed. Foundry sands comprising a particle coated with a composition comprising bisphenol-aldehyde novolak resin, a bisphenol homopolymer or mixtures including such polymers are disclosed. Methods of making and using these proppant particles in subterranean formations or making and using these foundry sands in foundries are also disclosed.

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A proppant useful in treating a subterranean formation comprising particles, each particle comprising: a particulate proppant substrate; a solid coat of a coating composition coated on the substrate, the composition comprising a mixture of: (i) a resin selected from the group consisting of a bisphen

A proppant useful in treating a subterranean formation comprising particles, each particle comprising: a particulate proppant substrate; a solid coat of a coating composition coated on the substrate, the composition comprising a mixture of: (i) a resin selected from the group consisting of a bisphenol-aldehyde novolak polymer and a bisphenol homopolymer, the bisphenol component of the novolak polymer and homopolymer having a Formula I: [Figure] I wherein R and R1 are independently selected from the group consisting of alkyl, aryl, arylalkyl and H, and are located meta to the respective OH group of the respective aromatic ring of Formula I; X is independently selected from the group consisting of a direct bond, sulfonyl, alkylidene unsubstituted or substituted with halogen, cycloalkylidene, and halogenated cycloalkylidene, wherein alkylidene is defined as by Formula II: [Figure] II wherein R2 and R3 are independently selected from the group consisting of H, alkyl, aryl, arylalkyl, halogenated alkyl, halogenated aryl and halogenated arylalkyl, wherein the bisphenol components of the homopolymer are attached by direct bonds between aromatic carbon atoms; with an absence of bisphenol F for the novolak polymer bisphenol component when the proppant is a curable proppant; and (ii) a crosslinking agent for crosslinking the resin.