Stabilized uv transparent acrylic composition

C - Chemistry – Metallurgy – 08 – K

Patent

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C08K 5/09 (2006.01)

Patent

CA 2581782

This invention relates to a UV stabilized transparent acrylic composition. More specifically the acrylic composition is stabilized with a carboxylic acid compound, which prevents or delays deterioration of the acrylic composition from high intensity UV radiation. The carboxylic acid compound is preferably an alpha hydroxyl carboxylic acid compound. The delay or prevention of deterioration results in the transmission of more UV radiation through the acrylic composition for longer periods of time. The composition is especially useful for tanning and other applications requiring transmission of high levels of UV radiation and resistance to discoloration. It is also useful in optical cable, LCD displays, acrylic storage media, and in HID devices.

La présente invention concerne une composition acrylique transparente aux UV, stabilisée. Plus spécifiquement, la composition acrylique est stabilisée à l'aide d'un composé d'acide carboxylique, lequel empêche ou retarde la détérioration de la composition acrylique due à un rayonnement UV haute intensité. Le composé d'acide carboxylique est de préférence un composé d'acide alpha hydroxyl carboxylique. Le retard ou la détérioration entraîne la transmission de plus de rayonnement UV à travers la composition acrylique sur des durées plus longues. La composition est particulièrement utile pour le bronzage et pour d'autres applications nécessitant la transmission de niveaux élevés de rayonnement UV et une résistance à la décoloration. Elle est également utile dans les câbles optiques, les écrans LCD, les supports de stockage acryliques, ainsi que dans les dispositifs DHI.

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