Metal process equipment or container for use in contact with vinyl monomers, e.g. distillation apparatus, has at least part of metal surface treated with polymeric complex former to prevent deposition of polymer

摘要

A device in the form of technical process apparatus or a container with a metallic surface containing iron and/or molybdenum and/or vanadium and/or titanium and/or chromium and/or nickel and/or cobalt, has at least part of the surface treated with a polymeric complex-former (I). An Independent claim is also included for a method for the treatment of metallic surfaces by preparing a clean metallic surface and treating this with (I).