Amide functional ultraviolet light absorbers for polyolefins

Details Amide functional ultraviolet light absorbers for polyolefins Amide functional ultraviolet light absorbers for polyolefins

C - Chemistry, Metallurgy

08

K

C08K 5/20 (2006.01) B32B 27/04 (2006.01) B32B 27/20 (2006.01) C08J 5/18 (2006.01) C08K 5/132 (2006.01) C08K 5/3475 (2006.01) C08L 23/00 (2006.01) C08L 33/02 (2006.01) C08L 101/08 (2006.01) G02B 5/128 (2006.01)

Patent

CA 2251311

An ultraviolet light absorbing material that resists blooming and migration is made up of a carboxyl functional polymer and an amide functional ultraviolet light absorbing compound, wherein the carboxyl functional polymer and the amide functional ultraviolet light absorbing compound are hydrogen bonded to one another. Polymeric films that contain a polyolefin and the ultraviolet light absorbing material are useful as the top layer in multilayer constructions such as retroreflective sheetings and conformable marking sheets.

L'invention concerne un matériau absorbant la lumière ultraviolette qui résiste à l'irradiation et à la migration. Ce matériau se compose d'un polymère fonctionnel de carboxyl et d'un composé fonctionnel d'amide absorbant la lumière ultraviolette. Le polymère fonctionnel de carboxyl et le composé fonctionnel d'amide absorbant la lumière ultraviolette sont liés par de l'hydrogène. Des films polymères à base de polyoléfine et le matériau absorbant la lumière ultraviolette sont utiles comme couche supérieure dans des constructions à multiples couches, telles que des feuilles rétroréflectrices et des feuilles de marquage conformables.

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