Amide and hydroxymethyl functionalized polyethers as thermoplastic barrier resins
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United States of America Patent
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May 19, 1992
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N/A
app pub date -
May 8, 1990
filing date -
May 8, 1990
priority date (Note) -
Expired
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Abstract
Polyethers having improved barrier to oxygen are normally solid, thermoplastic polyethers having aromatic ether repeating units in their backbones and pendent hydroxyl moieties and pendent amido, N-substituted amido and/or hydroxyalkyl moieties. Such polyethers are prepared by reacting diglycidyl ethers of dihydric aromatic compounds such as diglycidyl ether of bisphenol A with dihydric phenols having pendent amido, N-substituted amido and/or hydroxyalkyl moieties such as 2,2-bis(4-hydroxyphenyl)acetamide and 3,5-dihydroxybenzamide.
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