Artificial turf yarn

a technology of artificial turf and yarn, applied in the field of artificial turf, can solve problems such as yarn breakage or curling, and achieve the effect of zero shear viscosity ratio

Inactive Publication Date: 2014-08-28
SANDKUEHLER PETER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0003]The instant invention is an artificial turf and method of preparing same. In one embodiment, the instant invention provides an artificial turf comprising a turf yarn prepared from an ethylene-based polymer composition comprising: less than or equal to 100 percent by weight of the units derived from ethylene; and less than 30 percent by weight of units derived from one or more α-olefin comonomers; wherein said ethylene-based polymer composition is characterized by having a Comonomer Distribution Constant of equal to or greater than 40, a vinyl unsaturation of

Problems solved by technology

Residual shrink in the yarn reflects potential energy and stresses in the material which can be r

Method used

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Examples

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examples

[0049]The following examples illustrate the present invention but are not intended to limit the scope of the invention.

[0050]Each of Inventive Composition Examples (Inv. Comp. Ex.) 1-3 contained 100 wt % of an ethylene-based polymer composition. Comparative Composition Example (Comp. Composition Ex.) 1 contained 100% ELITE 5230G (a polyethylene commercially available from The Dow Chemical Company). Comparative Composition Example 2 contained 100% DOWLEX 2108G (a Linear Low Density Polyethylene commercially available from The Dow Chemical Company). Comparative Composition Example 3 contained 90 wt % ELITE 5230G and 10 wt % DOWLEX 2108G. Tables 1-5 provide various properties for Inventive Composition Examples 1-3 and Comparative Composition Examples 1-3.

TABLE 1MnMpMwMz(g / mol)(g / mol)(g / mol)(g / mol)Mw / MnMz / MwInv. Comp. 3179956763701761290862.211.84Ex. 1Inv. Comp. 2090034778719481672523.442.32Ex. 2Inv. Comp. 3020354350734421441522.431.96Ex. 3Comp. 2559262374751161526172.942.03CompositionE...

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Abstract

An artificial turf comprising a turf yarn prepared from an ethylene-based polymer composition comprising less than or equal to 100 percent by weight of the units derived from ethylene; and less than 30 percent by weight of units derived from one or more α-olefin comonomers; wherein said ethylene-based polymer composition is characterized by having a Comonomer Distribution Constant of equal to or greater than 40, a vinyl unsaturation of less than 100 vinyls per one million carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) equal to or greater than 1.75; a density in the range of 0.915 to 0.930 g/cm3, a melt index (12) in the range of from 0.8 to 5 g/10 minutes, a molecular weight distribution (Mw/Mn) in the range of from 2 to 3.6, and a molecular weight distribution (Mz/Mw) equal to or less than 3; and wherein the turf yarn exhibits one or more of the following properties (a) shrink of less than 4.8%, and (b) curl of less than 0.5 is provided.

Description

FIELD OF INVENTION[0001]The instant invention relates artificial turf.BACKGROUND OF THE INVENTION[0002]Artificial turf yarn prepared from polyethylene at densities of about 0.900 g / cm3 typically exhibit higher shrink values than those prepared from polyethylene having densities of about 0.935g / cm3. Lower density polyethylene provides the turf yarn with higher durability, softness, and resiliency. Turf yarns prepared from lower density polyethylene also exhibit higher shrink. Turf yarns with high shrink shorten when the tufted carpet is coated with a polyurethane or latex backing, thereby reducing the pile height. In order to compensate for shrink, longer yarns are tufted to account for the length reduction caused by high shrink. Residual shrink in the yarn reflects potential energy and stresses in the material which can be released by heat or time in the installed artificial turf, which can cause yarn breaks or curling.SUMMARY OF THE INVENTION[0003]The instant invention is an artifi...

Claims

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Application Information

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IPC IPC(8): E01C13/08
CPCE01C13/08C08F210/16C08L23/0815D01F6/30C08F210/14C08F2500/03C08F2500/10C08F2500/12C08F2500/17C08F2500/18C08F110/02
Inventor SANDKUEHLER, PETERBENSASON, SELIM
Owner SANDKUEHLER PETER
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