Extrusion coatable polyester film having an aminofunctional silane primer, and extrusion coated laminates thereof

摘要: Oriented polyester film primer coated with a hydrolyzed aminosilane IS disclosed. The aminosilanes in the unhydrolyzed state have formula: (R.sup.1).sub.a Si(R.sup.2).sub.b (R.sup.3).sub.c wherein R 1 is functional group at least one primary amino group; 2 hydrolyzeable such as lower alkoxy group, an acetoxy or halide; and 3 nonreactive, nonhydrolyzeable alkyl phenyl (a) being greater than equal to 1; (b) (c) zero; a+b+c=4. preferred silane N-beta-(aminoethyl)-gamma-aminopropyltrimethoxysilane having H.sub.2 N(CH.sub.2).sub.2 NH(CH.sub.2).sub.3 Si(OCH.sub.3).sub.3. applied aqueous solution any suitable stage during manufacture of film, i.e., before stretching operation, it may also be finished film. resultant primed found exhibit excellent adhesion other polymeric materials can readily laminated films.