Polyisophthalates and copolymers thereof having high barrier pro

Details Polyisophthalates and copolymers thereof having high barrier pro Polyisophthalates and copolymers thereof having high barrier pro

1982-09-07

1983-09-06

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

5282953, 5282955, 528302, 5283086, C08G 6302, C08G 6316

Patent

active

044030908

ABSTRACT:
Polyisophthalates, for example, poly(ethylene isophthalate), or copolymers thereof, have low glass transition temperatures, even lower than poly (ethylene terephthalate). Unexpectedly, such polyisophthalates have very good barrier properties with regard to oxygen and carbon dioxide penetration. The polyisophthalates can be utilized as packaging materials, for example as films or containers such as bottles for beverages such as intoxicating beverages such as beer, and the like.

REFERENCES:
patent: 4045431 (1977-08-01), Fagerburg
patent: 4049631 (1977-09-01), Go
patent: 4145517 (1979-03-01), Go
patent: 4154920 (1979-05-01), Jabarin
patent: 4340721 (1982-07-01), Bonnebat et al.

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