Barrier coating of a mixture of cured and uncured elastomeric polymers and a dispersed layered filler in a liquid carrier and coated articles
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United States of America Patent
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Oct 10, 2006
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app pub date -
Dec 19, 2003
filing date -
Dec 19, 2003
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Abstract
Barrier coating mixtures include (a) a mixture of pre-vulcanized and non-vulcanized elastomeric polymers; (b) an acid or base treated dispersed, substantially exfoliated silicate filler material that has not been functionalized with organic cations having an aspect ratio greater than 25; and (c) at least one additive, wherein the total solids content is less than 30% and the amount of filler is between 5% to about 60% of the total solids content. The coating retains its permeability properties under strain and has a strain to first damage of at least 10% biaxial elongation at 0% RH.Coated articles, free standing films and membranes, which are flexible and elastomeric, are produced using the barrier coating mixtures. Methods of manufacturing of such coated products are also encompassed.
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