Additive-containing synthetic filaments, and yarns and carpets including such filaments

Synthetic filaments include a nonaqueous additive system having dispersant-coated pigments physically dispersed in a liquid nonaqueous polymeric carrier. The additive system is most preferably in the form of a particulate paste which can be added in metered amounts (dosed) to a melt flow of the poly...

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Hauptverfasser: BUCHANAN, KARL H, GASPERSON, G. DANIEL, SHORE, GARY A, LEDFORD, DAVID B, MCINTOSH, STANLEY A, HELMS, JR., CHARLES F, JONES, FRANK R, STANKO, WAYNE S
Format: Patent
Sprache:eng
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Zusammenfassung:Synthetic filaments include a nonaqueous additive system having dispersant-coated pigments physically dispersed in a liquid nonaqueous polymeric carrier. The additive system is most preferably in the form of a particulate paste which can be added in metered amounts (dosed) to a melt flow of the polymeric host material prior to being spun into filaments. By providing a number of additive systems having a number of different additive attributes, and controllably dosing one or more into the melt flow of polymeric material, melt-spun filaments having different additive attributes may be produced on a continuous basis (i.e., without shutting down the spinning operation). The filaments may be included in yarns which are formed into carpet structures.