Thermoplastic polyester compositions having improved barrier pro

Details Thermoplastic polyester compositions having improved barrier pro Thermoplastic polyester compositions having improved barrier pro

1983-05-31

1984-10-02

Lee, Lester L.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524330, 524333, 524342, 524343, 524348, 524605, 528173, 528176, 528190, 528193, 528195, C08K 513

Patent

active

044749180

ABSTRACT:
Disclosed are polyester compositions having special utility in film or sheet form having improved gas and water barrier properties, and comprising homo- or copolyesters derived from terephthalic acid or mixtures of terephthalic acid with acids such as isophthalic, 2,6-naphthalene dicarboxylic, and the like, and a glycol component such as ethylene glycol or 1,4-cyclohexanedimethanol, blended with from about 1 to about 30 weight % of certain bisphenols such as bisphenol-A, and naphthalene diols. Films or sheets of these compositions are characterized by having greatly reduced oxygen, carbon dioxide and water vapor permeabilities.

REFERENCES:
patent: 3772405 (1973-11-01), Hamb

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