Integral composite wax-polymer membranes
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United States of America Patent
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Dec 2, 2003
Grant Date -
N/A
app pub date -
Mar 1, 1999
filing date -
Mar 1, 1999
priority date (Note) -
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Abstract
A composite barrier membrane coated on a substrate and membrane is formed by phase inversion technique utilizing a water-insoluble wax and a water-insoluble polymer dissolved in a solvent. The barrier membrane coated upon the substrate is used to control transmembrane transport of a liquid and a gas. The substrate can be a starch based food package material, a protein based food package materials, a natural fabric, a synthetic fabric, or a paper product.
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