The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 1985
Filed:
Dec. 26, 1984
Robert B Barbee, Kingsport, TN (US);
Burns Davis, Kingsport, TN (US);
Eastman Kodak Company, Rochester, NY (US);
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.