Lithium and potassium copolysilicate barrier coatings

Details Lithium and potassium copolysilicate barrier coatings Lithium and potassium copolysilicate barrier coatings

1997-05-16

1999-03-16

Pezzuto, Helen L.

Stock material or miscellaneous articles

Composite

Of silicon containing

4284755, 428480, 428521, 428523, B32B 904, B32B 1304

Patent

active

058827986

ABSTRACT:
A method for coating polymeric substrate articles with a barrier coating that imparts improved vapor, gas or aroma permeability characteristics to the coated substrate, without efflorescence or hazing of the dried coating. The method employs a lithium-potassium copolysilicate of the formula (L.sub.2 O).sub.x (K.sub.2 O).sub.1-x (SiO.sub.2).sub.y, wherein y is between 1 and 10, if x is less than 1; or y is greater than 4.6, if x is 1.

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