Document Type

Patent

Publication Date

5-19-1998

Patent Number

patent number 5753166

Abstract

A melt extrusion composition made by combining about 99.9 to about 98.5 weight percent of at least one polyester and about 0.1 to about 1.5 weight percent additive provides for a polyester or copolyester non-circular cross-sectional fiber having at least four percent improved shape retention as compared to the same fiber made from a melt extrusion composition without the additive. The additive is present at the air-polymer interfacial surface during melt spinning. A method of making the fiber is also disclosed.

Application Number

08/734538

Assignees

Eastman Chemical Company (Kingsport, TN)

Filing Date

1996-10-21

Primary/U.S. Class

264/177.13

Other/U.S. Class

264/211

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