Barrier coating of an elastomer and a dispersed layered filler in a liquid carrier
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United States of America Patent
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Jul 11, 2000
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N/A
app pub date -
Jun 8, 1998
filing date -
Jun 9, 1997
priority date (Note) -
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Abstract
Barrier coating mixtures contain in a carrier liquid, (a) an elastomeric (preferably butyl-containing) polymer; (b) a dispersed exfoliated layered filler having an aspect ratio greater than 25; and (c) at least one surfactant, wherein the solids content of the mixture is less than 30% and the ratio of polymer (a) to filler (b) is between 20:1 and 1:1. Coated articles, which are rigid or flexible and elastomeric, and free-standing films and membranes, which are flexible and elastomeric, are produced using the barrier coating mixtures.
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