Polyester containers having improved gas barrier properties

Details Polyester containers having improved gas barrier properties Polyester containers having improved gas barrier properties

1983-04-13

1984-03-13

Phynes, Lucille M.

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

Synthetic resins

From carboxylic acid or derivative thereof

528173, 528176, 528190, 528194, 528293, 528302, 5283086, C08G 6344, C08G 6368

Patent

active

044368950

ABSTRACT:
The present invention provides containers having improved resistance to gas permeability. The containers are formed from a polyester resin which comprises the reaction product of a diol containing up to about 8 carbon atoms and a diacid component which comprises terephthalic acid and a second diacid selected from iminodiacetic acid, oxydiacetic acid, thiodiacetic acid, and mixtures thereof. The second diacid is present in a concentration of about 1 to 50 mole percent, based upon the total amount of diacid. The polyester resin has an inherent viscosity of about 0.5 to 1.5. A preferred polyester is that derived from ethylene glycol, terephthalic acid, and oxydiacetic acid. The containers which are provided by the present invention may be in the form of sheet, film, molded articles, such as bottles, and other such structures.

REFERENCES:
patent: 3931114 (1976-01-01), Gall et al.
patent: 4076693 (1978-02-01), Go
patent: 4403090 (1983-09-01), Smith

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