Performance enhancement in the stabilization of organic...

Details Performance enhancement in the stabilization of organic... Performance enhancement in the stabilization of organic...

C - Chemistry, Metallurgy

08

K

C08K 3/38 (2006.01) C08K 5/3495 (2006.01)

Patent

CA 2576127

The addition of zinc borate alone or together with a hindered amine light stabilizer and ultra-violet light absorber to organic materials such as thermoplastic polyolefin resin, as is common in wood-plastic composites, provides a substantial reduction in the ultra-violet light degradation of the resin in comparison with similar materials made without zinc borate. This could provide substantial improvements in the long term durability of wood- plastic composites and other organic materials which are used in exterior environments and subject to ultra-violet exposure from the sun.

Selon l'invention, l'addition de borate de zinc isolément ou conjointement avec un photostabilisant à amine encombrée et un agent absorbant la lumière ultraviolette dans des matières organiques telles qu'une résine polyoléfinique thermoplastique, que l'on trouve souvent dans les composites bois-plastique, permet d'obtenir une réduction importante de la dégradation par la lumière ultraviolette de la résine par comparaison avec des matériaux similaires fabriqués sans borate de zinc. Cela permet d'obtenir des améliorations importantes en termes de durabilité à long terme des composites bois-plastique et d'autres matières organiques utilisées dans des environnements extérieurs et soumises au rayonnement ultraviolet du soleil.

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