Fibers and yarns from a fluorinated polyester blend
AssigneeE. I. Du Pont de Nemours and Company
InventorsNeville Everton Drysdale, Fredrik Nederberg
Life of this patent
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Abstract
Yarns comprising fibers comprising a fluorinated polyester blend are prepared by melt blending a fluorovinyl ether functionalized polyester with a non-fluorinated polyester. The fluoroether functionalized polyester can be a homopolymer or a copolymer. The yarns and fibers, and the textile and carpet goods produced therefrom, exhibit durable soil, oil, and water repellency.
Claims11
A fiber or yarn comprising a blend composition comprising a first aromatic polyester selected from the group consisting of poly(trimethylene terephthalate) (PTT), poly(ethylene naphthalate) (PEN), poly(ethylene isophthalate), poly(trimethylene isophthalate), poly(butylene isophthalate), mixtures thereof, and copolymers thereof, and a second aromatic polyester in contact therewith, wherein the second aromatic polyester is present in the blend composition at a concentration;
- and, wherein the second aromatic polyester comprises a molar concentration of fluorovinylether functionalized repeat units represented by structure I
- wherein,
- Ar represents a benzene or naphthalene radical;
- each R is independently H, C1-C10 alkyl, C5-C15 aryl, C6-C20 arylalkyl;
- OH, or a radical represented by the structure (II)
- with the proviso that only one R can be OH or the radical represented by the structure II;
- R1 is a C2-C4 alkylene radical which can be branched or unbranched;
- X is O or CF2;
- Z is H or Cl;
- a=0 or 1;
- and,
- Q represents the structure (Ia)
- wherein q=0-10;
- Y is O or CF2;
- Rf1 is (CF2)n, wherein n is 0-10;
- and,
- Rf2 is (CF2)p, wherein p is 0-10, with the proviso that when p is 0, Y is CF2.
Dependencies are inferred from the claim text.