Plexifilamentary strands of polyester
AssigneeE. I. Du Pont de Nemours and Company
InventorsHyunkook Shin, Joseph Robert Guckert, Joseph V. Kurian
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Abstract
A process for producing plexifilamentary or foam products by flash spinning in selected spin agents a polymer from the group consisting of poly (1,3-propylene terephthalate), poly (1,4-butylene terephthalate), and poly(ethylene terephthalate), including their copolymers in which the spin agents have minimal or no ozone-depleting properties.
Claims3
Plexifilamentary film-fibril strands, comprising poly(1,3-propylene terephthalate) and copolymers thereof.
Plexifilamentary film-fibril strands, comprising a blend of poly(1,3-propylene terephthalate) and copolymers thereof with a polyolefin selected from the group consisting of polyethylene and polypropylene.
Dependencies are inferred from the claim text.