Cross-linked PVOH coatings having enhanced barrier characteristi

Details Cross-linked PVOH coatings having enhanced barrier characteristi Cross-linked PVOH coatings having enhanced barrier characteristi

1994-07-21

1996-03-05

Sluby, P. C.

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

428516, 428910, 428512, 428513, 428461, 427340, 4273935, 4274123, 525 56, 525 61, B32B 2708, C08K 322, B05D 304

Patent

active

054966493

ABSTRACT:
An improved oxygen barrier layer for coating a substrate, such as a polymeric film. The oxygen barrier is a layer of cross-linked polyvinyl alcohol and glyoxal, which exhibits improved barrier characteristics to the transmission of oxygen. The oxygen barrier is produced by coating a solution of polyvinyl alcohol, glyoxal and tensoactive agent onto at least one side of a substrate adapted for receipt of such solution. The polyvinyl alcohol is thereafter cross-linked in the absence of a catalyst to provide the oxygen barrier.

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