Terephthalic acid/P,P-sulfonyldibenzoic acid/ethylene glycol/neo

Details Terephthalic acid/P,P-sulfonyldibenzoic acid/ethylene glycol/neo Terephthalic acid/P,P-sulfonyldibenzoic acid/ethylene glycol/neo

1977-01-17

1978-02-14

Phynes, Lucille M.

Food or edible material: processes, compositions, and products

Packaged or wrapped product

B65D 8100

Patent

active

040739490

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: (a) units will be about 90:10 to about 40:60. Containers made of these polyesters for packaging products of commerce like comestibles are also contemplated.

REFERENCES:
patent: 3890448 (1975-06-01), Ito
patent: 3904104 (1975-09-01), Kane
patent: 3912823 (1975-10-01), Kane

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