| abstract |
Packaging foil comprising a flexible support foil, a top layer of a vinyl polymer, and an adhesion promoter or primer between the support foil and top layer, wherein the primer is a mixture of a chlorine or fluorine containing polymer, an organic compound of at least two isocyanate groups, and a reaction product having terminal hydroxyl groups and derived from a linear polyester with terminal hydroxyl groups and an organic diisocyanate. |