Stabilised cyanoacrylate adhesives

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 4/00 (2006.01) C08F 2/44 (2006.01) C08F 222/32 (2006.01) C08K 5/46 (2006.01) C09J 4/00 (2006.01)

Patent

CA 2310421

Cyanoacrylate adhesives contain one or several cyanoacrylic acid esters and stabilisers against anionic and radical polymerisation, as well as auxiliary substances common in such adhesives. The object of the invention is to find an anionic polymerisation inhibitor which counteracts setting time prolongation due to storage while retaining a reliable inhibitor effect. This object is attained by using 2-oxo-1,3,2-dioxathiolanes as inhibitors.

L'invention concerne des colles de cyano-acrylate contenant au moins un ester d'acide de cyano-acrylate, des stabilisateurs agissant contre la polymérisation anionique et la polymérisation radicale ainsi que les auxiliaires usuels de telles colles. L'invention a pour objet de trouver un inhibiteur qui empêche la polymérisation anionique et, lors d'une action inhibitrice fiable, agit contre un allongement du temps de polymérisation après stockage. Cela est réalisé par l'utilisation de 2-Oxo-1,3,2-dioxathiolanes comme inhibiteurs.

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