Cyclic ketone peroxides as polymerization initiators

Details Cyclic ketone peroxides as polymerization initiators Cyclic ketone peroxides as polymerization initiators

C - Chemistry, Metallurgy

08

F

C08F 4/36 (2006.01) C08F 4/38 (2006.01)

Patent

CA 2214674

A process for the preparation of (co)polymers employing a peroxide composition comprising at least one organic peroxide wherein at least 20 % of the total active oxygen content of said organic peroxide is attributable to one or more cyclic ketone peroxides represented by formulae (I-III). These cyclic ketone peroxides are highly efficient as polymerization initiators. Also new cyclic ketone peroxides and compositions comprising such compounds are provided.

L'invention concerne un procédé pour préparer des copolymères en utilisant une composition de peroxyde contenant au moins un peroxyde organique, où au moins 20 % de l'oxygène actif total des peroxydes organiques provient d'un ou de plusieurs peroxydes de cétones cycliques représentés par les formules (I-III). Ces peroxydes de cétones cycliques sont très efficaces comme initiateurs de polymérisation. Egalement, l'invention concerne de nouveaux peroxydes de cétones cycliques et des compositions contenant de tels composés.

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