Abstract
Polycarbonates and polyurethanes have been watched as new selectrical properties and mechanical and chemical sytrnetonhwgettithoinc gt hr eeesixrinc es llentj .
Phosgene which has been a raw material of various dyestuffes and medicines is no w increasingly produced as intermediate of polyisocyanates by our company .
Industrial production and utilizations, cares of treatment, recovery and refining of phosgene are described in this paper and production of phosgene is also discussed from theutilizations of carbon monoxide.
