	US 12,134,687 B2
	Artificial turf fiber with UV protection substances
Stephan Sick, Willich (DE); Dirk Sander, Kerken (DE); Dirk Schmitz, Weeze (DE); Bernd Jansen, Nettetal (DE); and Ivo Lohr, Kempen (DE)
Assigned to Polytex Sportbeläge Produktions-GMBH, Grefrath (DE)
Appl. No. 16/976,878
Filed by Polytex Sportbelage Produktions-GmbH, Grefrath (DE)
PCT Filed Feb. 11, 2019, PCT No. PCT/EP2019/053222 § 371(c)(1), (2) Date Aug. 31, 2020, PCT Pub. No. WO2019/170365, PCT Pub. Date Sep. 12, 2019.
Claims priority of application No. 18161114 (EP), filed on Mar. 9, 2018.
Prior Publication US 2020/0407533 A1, Dec. 31, 2020
Int. Cl. C08K 5/00 (2006.01); C08J 3/22 (2006.01); C08K 5/134 (2006.01); C08K 5/17 (2006.01); C08K 5/524 (2006.01); D01D 5/42 (2006.01); D01F 1/10 (2006.01); D01F 6/46 (2006.01); D01F 6/90 (2006.01); E01C 13/08 (2006.01)

CPC C08K 5/005 (2013.01) [C08J 3/226 (2013.01); C08K 5/134 (2013.01); C08K 5/17 (2013.01); C08K 5/524 (2013.01); D01D 5/426 (2013.01); D01F 1/106 (2013.01); D01F 6/46 (2013.01); D01F 6/90 (2013.01); E01C 13/08 (2013.01); C08J 2323/06 (2013.01); C08J 2377/00 (2013.01); C08J 2400/22 (2013.01)]

14 Claims

1. A polymer-based artificial turf fiber comprising substances adapted for protecting the fiber against UV radiation, the substances comprising:

a hindered amine light stabilizer (HALS); and

two sterically hindered phenolic antioxidants,

a first sterically hindered phenolic antioxidant UV-absorbent substance having a molecular weight smaller than 600 g/mol, and

a second sterically hindered phenolic antioxidant UV-absorbent substance having a molecular weight higher than 800 g/mol, wherein

the fiber comprises the first UV-absorbent substance by at least 0.05% of a weight of the fiber and the second UV-absorbent substance by at least 0.01% of the weight of the fiber, and

wherein the HALS is 1,3-propanediamine, N,N-1,2-ethanediylbis-, reaction products with cyclohexane and peroxidized N-butyl-2,2,6,6-tetramethyl-4-piperidinamine -2,4,6-trichloro-1,3,5-triazine reaction products.