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

A yarn containing a filament formed of a thermoplastic polymeric composition comprising:

• (i) a thermoplastic polymeric host material, and
• (ii) an additive concentrate system in an amount between about 0.01 to about 15 wt. %, based on the total weight of the polymeric host material and the additive concentrate system, dispersed throughout at least a portion of the polymeric host material, wherein said additive concentrate system includes:
• (a) solid pigment particles in an amount between about 5 to about 75 wt. %, based on the weight of the additive concentrate system,
• (b) a dispersant in an amount between about 40 to about 100 wt. %, based on the weight of the pigment particles, and
• (c) the balance being a polymeric carrier.

An additive-containing filament formed of a thermoplastic polymeric composition comprising:

• (a) a polymeric host material, and
• (b) between 0.01 to about 15 wt. %, based on the total composition weight, of an additive concentrate system which includes:
• (i) solid pigment particles;
• (ii) a dispersant in an amount between about 5 to about 100 wt. %, based on the weight of the pigment particles;
• and
• (iii) a polycaprolactone carrier for said pigment particles and dispersant which is liquid at 20.degree. C. and is present in an amount to provide said additive concentrate system with a solids content of at least about 50 wt. %.