Equipment for polymerization of vinyl chloride monomers and polymerization process using the same

摘要

Equipments for polymerization of vinyl chloride monomers characterized in that the inside wall of the polymerization vessel and/or the surface of attachments to the vessel which are brought into contact with said monomers are wholly or partially made of mirror-polished ferritic stainless steel containing 15 to 40% by weight of chromium, 0.5 to 5% by weight of molybdenum, not more than 0.5% by weight of nickel, not more than 0.05% by weight of carbon and not more than 0.05% by weight of nitrogen, or mirror-polished duplex-phase stainless steel comprising a ferrite phase and an austenitic phase.