Process for cleaning metal surfaces of poly(arylene sulfide) deposits

摘要

A process for removing poly(arylene sulfide) deposits from metal surfaces is provided which comprises contacting said deposits with a halogenated cleaning agent followed by contacting the remaining deposits with a solution of a aluminum halide in an aromatic hydrocarbon. In addition, a process for the cleansing of metal parts having poly(arylene sulfide) deposits is provided which comprises contacting the parts in a manner as described immediately above, and thereafter contacting the metal parts with a lower alkyl alcohol, washing the metal part with H2O, drying the metal part, followed by treatment of the dried part with concentrated HNO3.