Isophthalic acid/P,P-sulfonyldibenzoic acid/ethylene glycol/neop

Details Isophthalic acid/P,P-sulfonyldibenzoic acid/ethylene glycol/neop Isophthalic acid/P,P-sulfonyldibenzoic acid/ethylene glycol/neop

1977-01-17

1978-07-11

Phynes, Lucille M.

Food or edible material: processes, compositions, and products

Packaged or wrapped product

215 1C, B65D 8500, C12C 106

Patent

active

041003039

ABSTRACT:
Copolyesters having an oxygen permeability of less than 15 cc.multidot.mil/100 in..sup.2 .multidot.day.multidot.atm. (at 50% relative humidity and about 73.degree. F.) and a glass transition temperature in excess of 72.degree. C. and having the following four repeating units are contemplated: ##STR1## Based on reactant charges the ratio of (b) units to (a) units will be about 80:20 to about 20:80. Containers made of these polyesters for packaging products of commerce like comestibles are also contemplated.

REFERENCES:
patent: 3790684 (1974-02-01), Trementozzi
patent: 3867249 (1975-02-01), Vitale
patent: 3912823 (1975-10-01), Kane

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