Polyester fiber and methods for making same
AssigneeHNA Holdings, Inc.
InventorsLarry F. Charbonneau, Garo Khanarian, Robert E. Johnson, Helmut B. Witteler, John A. Flint
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Abstract
A polyester fiber made from a polymer having ethylene glycol moieties, isosorbide moieties and terepthaloyl moieties, and the method of making the fiber is described. The polyester fiber is used to form articles suitable for commercial, especially textile, and industrial uses, 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.
Claims36
A fiber 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 fiber, wherein the fiber comprises a polyester, said method comprising:
- a) forming the polyester;
- b) spinning the polyester into a fiber;
- and
- c) drawing the spun fiber;
- wherein the polyester comprises terephthaloyl moieties;
- optionally, 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.
Dependencies are inferred from the claim text.