Hydroxy-functional poly(amide ethers) as thermoplastic barrier resins
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United States of America Patent
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Sep 1, 1992
Issued Date -
N/A
app pub date -
Sep 13, 1991
filing date -
Apr 26, 1989
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Expired
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Abstract
Hydroxy-functional poly(amide-ethers) are fabricated into articles such as rigid containers and flexible films exhibiting high barrier to oxygen transmission in both dry and moist environments. For example, a polymer prepared by reacting the diglycidyl ether of 4,4'-isopropylidene bisphenol with .alpha.,.alpha.'-bis(4-hydroxybenzamido)-1,3-xylene exhibits especially high barrier.
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