| abstract |
Methods for producing proppants with a polyurethane proppant coating are provided. The methods include forming aliphatic polycarbonate polyols from the copolymerization of epoxide and CO2 monomers, forming the polyurethane proppant coating by reacting the aliphatic polycarbonate polyols and at least one of diisocyanate monomers and isocyanate monomers, and coating proppant particles with the polyurethane proppant coating to produce coated proppants with polyurethane proppant coating. |