Hydroxyl functionalized polyetheramines as barrier packaging for oxygen-sensitive materials
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United States of America Patent
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Jan 4, 1994
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app pub date -
Apr 7, 1992
filing date -
Oct 3, 1990
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Abstract
Polyetheramines having improved barrier to oxygen are thermoplastic polymers having aromatic ether/amine repeating units in their backbones and pendant hydroxyl moieties. Such polyetheramines are prepared by reacting diglycidyl ethers of dihydric aromatic compounds such as the diglycidyl ether of bisphenol-A, hydroquinone, or resorcinol with amines having no more than two amine hydrogens per molecule, such as piperazine or ethanolamine.
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