ARTIFICIAL TURF WTIH IMPROVED TUFT-LOCK

• US 20190309487A1
• Filed: 10/27/2016
• Published: 10/10/2019
• Est. Priority Date: 06/30/2016
• Status: Abandoned Application

• Current Assignee: Dow Global Technologies LLC (Dow, Inc.)
• Original Assignee: Dow Global Technologies LLC (Dow, Inc.)
• Inventors: Bonavoglia, Barbara, Lopez, David, Wevers, Ronald
• Application Number:
  US16/309,007
• Publication Number:
  US 20190309487A1
• Time in Patent Office: Days
• CPC Class Codes: D01F 6/46 of polyolefins
• CPC Class Codes: D06M 11/09 with free halogens or interhalogen compounds
• CPC Class Codes: D06M 2101/20 Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
• CPC Class Codes: D06M 2101/32 Polyesters
• CPC Class Codes: D06M 2101/34 Polyamides
• CPC Class Codes: D06N 2201/0254 Polyolefin fibres
• CPC Class Codes: D06N 7/0065 characterised by the pile
• CPC Class Codes: D10B 2505/202 Artificial grass
• CPC Class Codes: E01C 13/08 Surfaces simulating grass ; Grass-grown sports grounds grass-like surfaces for skiing E01C13/12
• CPC Class Codes: Y10T 428/23993 Composition of pile or adhesive

Abstract

Embodiments of the present disclosure are directed to stretched filaments comprising a non-functionalized polyolefin and at least one functionalized polymer. The functionalized polymer is a propylene-based plastomer or elastomer having one or more functional groups grafted on the propylene-based plastomer or elastomer. The one or more functional groups is selected from the group consisting of amine groups and imide groups. The at least one functionalized polymer has a DSC melting point from 100° C. to 130° C. When the stretched filament is stretched to a stretch ratio of 5, the stretched filament has a tenacity greater than 0.90 cN/dtex

Claims

1. A stretched filament formed from a blend comprising:

at least one functionalized polymer, wherein the functionalized polymer is a propylene-based plastomer or elastomer having one or more functional groups grafted on the propylene-based plastomer or elastomer, wherein the one or more functional groups is selected from the group consisting of amine groups and imide groups, wherein the at least one functionalized polymer has a differential scanning calorimetry (DSC) melting point of from 100°

C. to 130°

C.; and

a non-functionalized polyolefin;

wherein when the stretched filament is stretched to a stretch ratio of 5, the stretched filament has a tenacity greater than 0.90 cN/dtex.

2. The stretched filament of claim 1, wherein the non-functionalized polyolefin comprises a polyethylene having a density (measured according to ASTM D792) of from 0.900 g/cc to 0.950 g/cc and a melt index, I₂, measured according to ASTM D 1238 (190°

C. and 2.16 kg), of from 0.1 g/10 min to 10 g/10 min.

3. The stretched filament of claim 1, wherein the non-functionalized polyolefin comprises a polyethylene having a density (measured according to ASTM D792) of from 0.915 g/cc to 0.940 g/cc and a melt index, I₂, measured according to ASTM D 1238 (190°

C. and 2.16 kg), of from 0.7 g/10 min to 5 g/10 min.

4. The stretched filament of claim 2, wherein the polyethylene has a melt flow ratio, I₁₀/I₂, of from 5 to 14, wherein I₁₀ is measured according to ASTM D1238 (190°

C. and 10 kg).

5. The stretched filament of claim 1, wherein the non-functionalized polyolefin comprises a polypropylene homopolymer.

6. The stretched filament of claim 5, wherein the non-functionalized polyolefin has a melt flow rate (MFR₂) of 0.5 g/10 min to 25 g/10 min.

7. The stretched filament of claim 5, wherein the polypropylene homopolymer has a MFR₂ of 0.5 g/10 min to 10 g/10 min.

8. The stretched filament of claim 1, wherein the functionalized polymer has a graft level of from 0.1 wt. % to 3.0 wt. %.

9. The stretched filament of claim 1, wherein the propylene-based plastomer or elastomer is a propylene/ethylene copolymer or a propylene/alpha-olefin copolymer wherein the alpha-olefin is a C₄-C₂₀ alpha-olefin.

10. The stretched filament of claim 1, wherein the at least one functionalized polymer has a melt flow rate (MFR₂) measured according to ASTM D 1238 (230°

C. and 2.16 kg), of from 1 g/10 min to 20 g/10 min.

11. An artificial turf system comprising:

a primary backing;

a secondary backing; and

the stretched filament of claim 1.