Polyester resins useful for forming containers having improved g

Details Polyester resins useful for forming containers having improved g Polyester resins useful for forming containers having improved g

1984-12-26

1985-10-08

Phynes, Lucille M.

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

Synthetic resins

From carboxylic acid or derivative thereof

528272, 528303, 528308, 5283087, C08G 6316

Patent

active

045461708

ABSTRACT:
The present invention provides polyester resins useful for forming containers having improved resistance to gas permeability. The polyester resin comprises the reaction product of a diol containing up to about 8 carbon atoms and a diacid component which comprises terephthalic acid and oxydiacetic acid. The oxydiacetic acid is present in a concentration of about 5 to 50 mole percent, based upon the total amount of diacid. The polyester resin has an inherent viscosity of about 0.4 to 1.5. A preferred polyester is that derived from ethylene glycol, terephthalic acid, and about 10 to 40 mole percent oxydiacetic acid. The polyesters which are provided by the present invention may be formed into containers in the form of sheet, film, molded articles, such as bottles, and other such structures.

REFERENCES:
patent: 4403090 (1983-09-01), Smith
patent: 4436895 (1984-03-01), Barbee et al.
patent: 4446303 (1984-05-01), Moore et al.

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