Patent Number: 6,309,757

Title: Gas barrier coating of polyamine, polyepoxide and hydroxyaromatic compound

Abstract: Gas barrier coating compositions are provided which include a polyamine component, a polyepoxide component and a hydroxy-substituted aromatic compound that is present in an amount sufficient to provide a gas barrier coating having an oxygen permeability less than or equal to 75 percent of the oxygen permeability of the same composition without a hydroxy-substituted aromatic compound. Also provided is a multi-layer packaging material having at least one gas permeable packaging material layer and at least one gas barrier material layer formed from the gas barrier coating composition. Sealable containers are also provided.

Inventors: Carlblom; Leland H. (Gibsonia, PA), Kutchko; Cynthia (Pittsburgh, PA), Niederst; Ken W. (Allison Park, PA)

Assignee: PPG Industries Ohio, inc.

International Classification: C08G 59/62 (20060101); C08J 7/00 (20060101); C08J 7/04 (20060101); C08G 59/56 (20060101); C08G 59/00 (20060101); B32B 001/02 (); B32B 027/08 (); C08G 059/50 (); C08L 063/00 ()

Expiration Date: 10/30/2018