METHOD FOR DIRECT AMMONOLYSIS OF POLYCARBONATE-CONTAINING MATERIALS AND PRODUCTS

摘要

A method for recovering a dihydroxy aromatic compound and urea from a polycarbonate-containing composition comprising a polycarbonate and a phosphorus-containing flame retardant, comprising contacting the composition with ammonia in the presence of a swelling solvent for a time sufficient to depolymerize the polycarbonate producing a dihydroxy aromatic compound and urea.