Vinylidene chloride resin composition and process for production thereof

摘要

A vinylidene chloride resin composition excellent in thermal stability and little liable to be discolored due to thermal degradation is provided by adding an EDTA compound and an inorganic phosphoric acid salt to a vinylidene chloride resin. The EDTA compound and inorganic phosphoric acid salt may be added in 0.00001 - 0.2 wt. part and 0.00001 - 1 wt. part, respectively, per 100 wt. parts of the vinylidene chloride resin. The resin composition may be produced by polymerizing a vinylidene chloride monomer mixture in the presence of an EDTA compound and an inorganic phosphoric acid salt, particularly at least one species of sodium pyrophosphate, disodium dihydrogen pyrophosphate and sodium dihydrogen phosphate so as to keep pH 3 - 9 of the polymerization system.