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
COinS