Improvements in or relating to the production of aqueous dispersions of interpolymers and of moistureproof sheet wrapping materials coated therewith

摘要: A mixture of vinylidene chloride (80 to 96 per cent), acrylic acid (0.5 3 and acrylonitrile are interpolymerized in aqueous emulsion the presence 6 cent a benzene sulphonic general formula where R represents an aliphatic radical containing 10 14 carbon atoms, or alkali metal ammonium salt thereof. catalyst-activator mixture, e.g. persulphate sodium metabisulphite, may be present together with aldehyde ketone, methyl isobutyl ketone as modifier. The resulting dispersion applied regenerated cellulose film form moisture-proof coating. Specification 453,778 is referred to.