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

1975-12-22

1978-02-28

Phynes, Lucille M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 75T, C08G 6368

Patent

active

040766934

ABSTRACT:
Copolyesters having an oxygen permeability of less than 15 cc. 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 (4) 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: 3972852 (1976-08-01), Inata et al.
Chemical Abstracts, vol. 50, 16180-16183 (1956).
Ibid, vol. 78, 14844e and 160332y (1973).
Unexamined (Kokai) Japanese Patent Publication No: Showa 50-149787, Patent Application No: Showa 49-57791, May 24, 1974.
Unexamined (Kokai) Japanese Patent Publication No: Showa 50-136394, Patent Application No: Showa 49-43274, Apr. 19, 1974.

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