Elastic fiber containing an anti-tack additive

A yarn comprising a fiber consisting of:

• an elastomeric propylene based polymer;
• an anti-tack agent, wherein the anti-tack agent is a bis-stearamide in combination with another anti-tack agent selected from the group consisting of TiO2, corn starch, talc, barium sulfate, lamellar clay, and calcium carbonate;
• a diene selected from the group consisting of 5-ethylidene-2-norbornene (ENB);
• 1,4-hexadiene;
• 5-methylene-2-norbornene (MNB);
• 1,6-octadiene;
• 5-methyl-1,4-hexadiene;
• 3,7-dimethyl-1,6-oetadiene;
• 1,3-cyclopentadiene;
• 1,4-cyclohexadiene;
• vinyl norbornene (VNB);
• dicyclopentadiene (DCPD), and a combination thereof;
• a non-silicone finishing agent on a surface of the fiber, said fiber having less than 0.01 weight % of a silicone-based finishing agent on the surface of the fiber;
• optionally an additive selected from an antioxidant, thermal stabilizer, UV stabilizer, pigment, delustrant, dye, dye enhancer and/or additive to enhance resistance to chlorine degradation;
• and
• optionally a crosslinking agent selected from the group consisting of:
• a multifunctional acrylate, a multifunctional methacrylate, a functionalized polybutadiene resin, a functionalized cyanurate, and allyl isocyanurate;
• wherein the anti-tack agent is present in an amount of about 0.5 to about 30% by weight of the fiber;
• wherein said anti-tack agent is blended with said elastomeric propylene-based polymer prior to spinning;
• and
• wherein said yarn is spun, wound and unwound on a yarn package without sticking together.