Waterborne hydrophobic barrier coatings
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United States of America Patent
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Mar 10, 2009
Grant Date -
Jun 8, 2006
app pub date -
Jan 24, 2006
filing date -
May 24, 2002
priority date (Note) -
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Abstract
A waterborne hydrophobic barrier coating formulation comprising a blend of a vinyl acetate-ethylene (VAE) polymer emulsion and a paraffin wax emulsion, wherein a dried coating of the blend on a substrate, such as a nonwoven web, an absorbent pad, or a textile, and dried, has a hydrostatic head barrier sufficient to prevent passage of fluids but allow passage of water vapor through it. A multi-layer material comprising at least one layer of a nonwoven web, an absorbent pad, or a textile, and at least one layer of a blend of a VAE polymer emulsion and paraffin wax emulsion.
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