COATED STYRENE RESIN VESSEL AND PROCESS FOR ITS PRODUCTION.

摘要

Vessel is made of styrene resin and is coated on at least one surface with a layer of vinylidene chloride resin. The vinylidene chloride resin layer is composed of a three component copolymer, of vinylidene chloride 96-70 mol%), vinyl chloride (3-30 mol%) and an acrylate- or methacrylate-low carbon number alkyl ester (3-20 mol%). The styrene resin vessel and the vinylidene chloride layer are bound tightly together with a layer of styrene resin oxide. The delamination strength between the vessel and the coated layer, when they are soaked in water at 5 deg.C for a week, is specified to be 100g/18mm width or more. The styrene resin is a copolymer of styrene (99-70 mol%) and butadiene (1-30 mol%). The vinylidene chloride resin coating layer is specified to have a glass transition temp. of 6-18 deg.C and a dynamic elasticity of 2-4 x 10 power 10 dyne/cm2 at 10 deg.C and 110 Hz. The styrene resin oxide layer is specified in that its X-ray photo electron spectrum has an Ols peak between the bonding energies 532.6 and 533.6 eV. This coated styrene vessel is produced by oxidising at least one side with a water-soluble latex of the coating vinylidene resin and drying.