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US 7,745,000 B2Granted
Surface-modified plexifilamentary structures, and compositions therefor
AssigneeE. I. Du Pont de Nemours and Company
InventorsMark Gary Weinberg, Gregory T. Dee, Jose Manuel Rodriguez-Parada
Life of this patent
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Abstract
The present invention is concerned with flash-spinning a surface-modified structure such as a plexifilimentary yarn or a microcellular foam.
Claims14
A plexifilamentary structure formed by flash spinning a spin mixture comprising a polymer blend of:
- 5 to 30 percent by weight of a functionalized polymer and 70 to 95 percent by weight of an additional polymer;
- wherein the functionalized polymer is selected from the group consisting of polyolefins, copolymers thereof with ethylenically unsaturated monomers, polyesters, and mixtures thereof, said polymer comprising 1 to 25 mol % of functional groups;
- wherein the additional polymer is selected from the group consisting of polyolefins, copolymers thereof with ethylenically unsaturated monomers, polyesters, and mixtures thereof;
- wherein said functional groups form non-fugitive surface modifications on said plexifilamentary structure and said surface modifications exist at an enriched concentration as compared to the bulk concentration of said functional groups.
1 more element
Dependencies are inferred from the claim text.