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US 12,134,687 B2Granted
Artificial turf fiber with UV protection substances
AssigneePolytex Sportbelage Produktions-GmbH
InventorsStephan Sick, Dirk Sander, Dirk Schmitz, Bernd Jansen, Ivo Lohr
Life of this patent
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Abstract
The invention relates to a polymer-based artificial turf fiber comprising substances (216) adapted for protecting the fiber against UV radiation. The substances comprise a hindered amine light stabilizer—HALS and a first and a second UV-absorbent substance. The molecular weights of the first and the second UV-absorbent substances differ from each other by at least 100 g/mol.
Claims14
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.
4 more elements
Dependencies are inferred from the claim text.