Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1998-04-30
2000-04-18
Boykin, Terressa M.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252403, 524 87, 524 89, 524 91, 524 92, 544211, 544215, 564225, 564244, 564246, 564247, C09K 1508
Patent
active
060511648
ABSTRACT:
A polymeric article, such as an extruded or molded article or a biaxially oriented tape or film, and a method of stabilizing such a polymeric article to protect the article from degradation due to exposure to UV light. The article is formed by blending a polymeric material with from about 50 to about 5,000 ppm of at least one ortho hydroxy tris-aryl triazine light absorber and from about 500 ppm to about 1.25 percent of at least one oligomeric, polymeric, or high molecular weight HALS having a molecular weight of at least about 500, wherein the weight ratio of HALS to triazine light absorber is from about 3:1 to about 20:1, to form a stabilized polymeric composition, and forming an extruded or molded article or a biaxially oriented tape or film from the stabilized polymeric composition.
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Boykin Terressa M.
Cytec Technology Corp.
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