Polyester film and methods for making same
AssigneeHNA Holdings, Inc.
InventorsGaro Khanarian, Larry F. Charbonneau, Carol Kitchens, Sunny S. Shen
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Abstract
A polyester film made from a polymer having ethylene glycol moieties, isosorbide moieties and terepthaloyl moieties, and the method of making the film is described. The polyester film is used to form articles such as films, lacquers, labels, capacitors, insulators, and the like, and has an inherent viscosity of at least 0.35 dL/g when measured as a 1% (weight/volume) solution of the polyester in o-chlorophenol at a temperature of 25.degree. C.
Claims41
A film comprising a polyester, wherein said polyester comprises terephthaloyl moieties;
- optionally, one or more other aromatic diacid moieties;
- ethylene glycol moieties;
- isosorbide moieties;
- and, optionally, one or more other diol moieties, wherein said polyester has an inherent viscosity of at least about 0.35 dL/g when measured as a 1% (weight/volume) solution of said polyester in o-chlorophenol at a temperature of 25.degree. C.
A method of making a film, wherein the film comprises a polyester, said method comprising:
- a) forming the polyester;
- and
- b) making the polyester into a film;
- wherein the polyester comprises terephthaloyl moieties;
- optionally, one or more other diacid moieties;
- ethylene glycol moieties;
- isosorbide moieties;
- and, optionally, one or more other diol moieties, wherein said polyester has an inherent viscosity of at least about 0.35 dL/g when measured as a 1% (weight/volume) solution of said polyester in o-chlorophenol at a temperature of 25.degree. C.
Dependencies are inferred from the claim text.