Patent ID: 8865833

Claim:
A method of preparing a polycarbonate nanocomposite, comprising: forming a reactant mixture comprising a nanomaterial, a solvent, a dihydroxy compound and an activated carbonate, wherein the amount of solvent in the reactant mixture before commencing the reaction is from 10-300 grams of solvent per gram of the nanomaterial in the reactant mixture; followed by commencing a reaction of the dihydroxy compound and the activated carbonate in the presence of the solvent, the nanomaterial, and a polymerization catalyst to form the polycarbonate nanocomposite; wherein 0.1 to 10 percent by weight of the total polycarbonate nanocomposite is the nanomaterial, wherein the nanomaterial is functionalized or partly functionalized, wherein greater than 90% by volume of the particles of the nanomaterial in the composition have a particle diameter less than 50 nm as measured by SAXS.