Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Reexamination Certificate
2005-06-14
2005-06-14
Acquah, Samuel A. (Department: 1711)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
C528S298000, C528S299000, C528S300000, C528S301000, C528S302000, C528S307000, C528S308000, C528S308600, C428S221000, C428S359000, C428S364000, C428S365000, C525S437000, C525S444000
Reexamination Certificate
active
06905765
ABSTRACT:
A polyether ester comprises poly(trimethylene-ethylene ether) ester soft segment and alkylene ester hard segment. Preferably, the polyether ester is a thermoplastic elastomer in which the hard segment comprises C2to C12alkylene ester. The composition is prepared by providing and reacting:(a) poly(trimethylene-ethylene ether) glycol(b) at least one polyester.Fiber made from this composition is particularly useful in making films, membranes and fabrics.
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Acquah Samuel A.
E.I. du Pont de Nemours and Company
Kuller Mark D.
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