Poly(hydroxy ether imides) as barrier packaging materials

Details Poly(hydroxy ether imides) as barrier packaging materials Poly(hydroxy ether imides) as barrier packaging materials

1992-05-18

1993-09-21

Krass, Frederick F.

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

428 366, 428 367, 428412, 428413, 428414, 428480, 428516, 428523, 525523, 525533, 528 96, B29D 2200, B29D 2300, C08G 5900, C08G 6508

Patent

active

052467511

ABSTRACT:
Hydroxy-functionalized polyethers having imide groups in their backbones are prepared by contacting an imide-containing bisphenol with the diglycidyl ether of the same or another bisphenol under conditions sufficient to cause the nucleophilic phenolic hydroxyl moieties to react with epoxy groups. These poly(hydroxy ether imides) possess a combination of high barrier to oxygen transmission (i.e., oxygen transmission rates of less than 10.0 cm.sup.3 -mil/100 in.sup.2 -atm-day) and high heat resistance (i.e., T.sub.g above 120.degree. C.). These polymers are suitable for use in the manufacture of packaging materials with high barrier to oxygen.

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