Polypropylene film with primer of a water dispersed epoxy resin coating
AssigneeMobil Oil Corporation
InventorsRobert H. Steiner, Gary L. Duncan, Robert E. Touhsaent
Life of this patent
Estimating the term…
Abstract
Thermoplastic films, such as polypropylene, are coated with a vinylidene chloride based multipolymer to enhance the physical properties of such films. The coating is anchored to the base film by first applying a primer coating directly on the film surface, which primer coating comprises a water dispersed epoxy resin composition.
Claims12
A thermoplastic film substrate having a topcoat of a heat sealable vinylidene chloride multi-polymer containing at least 50% by weight of vinylidene chloride, said film having a primer coat, intermediate said substrate film surface and said topcoat, comprising the reaction product of an acidified aminoethylated vinyl polymer and an epoxy resin.
A polypropylene film substrate having a topcoat consisting of a sealable vinylidene chloride polymer containing at least 50% by weight of vinylidene chloride, said polypropylene film having a primer coat intermediate said substrate film surface and said topcoat, said primer coat consisting of the reaction product of an acidified aminoethylated vinyl polymer and an epoxy resin.
Dependencies are inferred from the claim text.