Multi-lobal composite filaments with reduced stainability
AssigneeBASF SE
InventorsMatthew B. Hoyt, Phillip E. Wilson
Life of this patent
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Abstract
A multi-lobal composite filament with reduced stainability having a polyamide core being substantially free of amine end-groups and being surrounded by a sheath of a hydrophobic polymer of aromatic polyesters, aliphatic polyesters, polyethylene, polymethylpentent, polybutene, polymethyl butene and copolymers thereof, wherein the weight ratio between core and sheath is from about 2:1 to about 10:1. These filaments are particularly useful to the manufacture of carpets.
Claims12
A multi-lobal composite filament with reduced stainability comprising a polyamide core having an amine end group content of from about 5 to about 45 meq/kg, and a hydrophobic polymer sheath surrounding said core, said hydrophobic polymer being selected from the group consisting of aromatic polyesters, aliphatic polyesters, polyethylene, polymethylpentene, polybutene, and polymethyl butene, and wherein the weight ratio between said core and said sheath is from about 2:1 to about 10:1.
Dependencies are inferred from the claim text.