C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 77/00 (2006.01) C08J 3/20 (2006.01) C08J 5/00 (2006.01) C08K 5/103 (2006.01) C08K 5/20 (2006.01) C08K 5/34 (2006.01) C08K 5/49 (2006.01) C08L 71/00 (2006.01)
Patent
CA 2559831
The present invention relates to a copolymer composition comprising homo- or copolyamide polyamide blocks and polyether blocks and further comprising: a) 3 000 to 8 000 ppm of at least one phenolic antioxidant; b) 0 to 5000 ppm of at least one phosphorus or sulphur based antioxidant; c) 0 to 5000 ppm of at least one UV absorber;and d) 200 to 3000 ppm of at least one methylated HALS meaning hindered amine light stabilizer and/or 200 to 800 ppm of at least one nonmethylated HALS; ppm meaning parts per million of total composition. The compositions are useful in mainufacturing articles, such as shoe sole.
La présente invention a pour objet une composition de copolymère constituée de séquences d'homopolyamide ou de copolyamide-polyamide et de séquences de polyéther, et constituée de plus de : a) de 3000 à 8000 ppm d'au moins un antioxydant phénolique; b) de 0 à 5000 ppm d'au moins un antioxydant à base de phosphore ou de soufre; c) de 0 à 5000 pm d'au moins un absorbant UV; et d) de 200 à 3000 ppm d'au moins un photostabilisant à fonction amine encombrée stériquement (PSAES) méthylé et/ou de 200 à 800 ppm d'au moins un PSAES non non méthylé; ppm signifiant partie par million de la composition totale. Ces compositions sont utiles pour la production d'articles comme des semelles de chaussures.
Arkema France
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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