Uv curable composition

Details Uv curable composition Uv curable composition

C - Chemistry, Metallurgy

08

L

C08L 63/08 (2006.01) C08J 3/28 (2006.01) C08K 5/00 (2006.01) C08L 53/00 (2006.01)

Patent

CA 2252830

The present invention relates to UV curable composition comprising a monohydroxylated epoxidized polydiene polymer and a photoinitiator selected from the group consisting of diarylhalide salts of general formula (I) wherein X is a complex metal halide anion or a complex halide anion of a strong protonic acid; Y is (a) or (b) wherein R is hydrogen, aryl, alkyl or an alkyl halide; Z is I, Br or Cl; and n is an integer of at least 1. The invention further relates to a process for preparing the UV curable composition in the absence of a non-aqueous solvent, to UV cured compositions and articles containing the UV cured compositions.

Composition durcissable par les UV qui comprend un polymère polydiène monohydroxylé et époxydé et un photoamorceur choisi dans le groupe constitué de sels de diarylhalogénure de formule générale (I) dans laquelle X est un anion halogénure de métal complexe ou un anion halogénure complexe d'un acide protonique fort, Y est de formule (a) ou (b), R est hydrogène, aryle, alkyle ou un halogénure d'alkyle, Z est I, Br ou Cl et n est un nombre entier égal ou supérieur à 1. La présente invention concerne en outre un procédé de préparation de ladite composition durcissable par les UV en l'absence de solvant non aqueux, des compositions durcies par les UV et des articles contenant lesdites compositions.

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