Elastic fiber containing an anti-tack additive
View Patent ↗Embodiments of the disclosure include elastomeric stretch fibers containing an anti-tack agent, methods of preparing the fiber, methods of using this fiber, articles including this fiber, and the like.
1. 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 TiO 2 , 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.
2. The yarn of claim 1 , wherein the bis-stearamide is selected from the group consisting of bi-stearyl-ethylene-diamide; N,N′-ethylene bisstearamide; N,N′-ethylene bis(octadecanamide); 1,2-bis(octadecanamido) ethane; and a combination thereof.
3. The yarn of claim 1 , wherein the non-silicone based finishing agent comprises an ester based oil finish or a fatty acid based oil finish or a combination thereof.
4. The yam of claim 1 , wherein the fiber is at least partially crosslinked.
5. The yarn of claim 1 , wherein the anti-tack agent is an ethylene bis-stearamide.
6. The yarn of claim 5 , wherein the ethylene bis-stearamide is present in an amount of about 1 to about 10% by weight of the fiber.
7. An article comprising the yarn of claim 1 .