Proppant

A proppant for hydraulically fracturing a subterranean formation, said proppant comprising:

• A. a particle present in an amount of from 90 to 99.5 percent by weight based on the total weight of said proppant;
• and
• B. a polymeric coating disposed about said particle and present in an amount of from 1 to 4 percent by weight based on the total weight of said proppant, said polymeric coating comprising the reaction product of:
• i. a hydroxylated styrene acrylate copolymer having a hydroxyl number of from 90 to 150 mg KOH/g and comprising 20 to 40 percent by weight styrene units, 21 to 32 percent by weight hydroxyethyl methacrylate units, and 12 to 21 percent by weight 2-ethylhexyl acrylate units;
• and
• ii. a diphenylmethane diisocyanate and/or a polymeric diphenylmethane diisocyanate.