Sulfonium initiators, process for production and use in...

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 71/02 (2006.01) C08K 5/36 (2006.01)

Patent

CA 2617089

The invention relates to an initiator comprising at least one structural element characterized by the following formula (I) wherein X - is a non or low coordinating anion, R1, R2, R3, R4 are independently linear, cyclic or branched C1 - C20 alkyl or alkylene groups, wherein one or more of the methylene groups contained in the alkyl or alkylene group can be substituted by - CO-, -CONH-, -CON(CH3)-, -S- and/or -0-, and wherein R1 , R2, R3 and/or R4 can act as a bridging element connecting two or more structural elements. The invention is also related to a process of producing the initiator and to a curable composition comprising the initiator, a process for producing the curable composition a kit comprising a cationically curable composition and the inventive initiator and the use of the initiator or the curable composition comprising the initiator for various applications, especially in the dental field.

L'invention concerne un initiateur comprenant au moins un élément structurel caractérisé par la formule (I), dans laquelle X représente un anion à activité de coordination nulle ou faible, R1, R2, R3, R4 sont des groupes alkyle ou alkylène indépendamment linéaires, cycliques ou ramifiés C1-C20, un ou plusieurs des groupes méthylène contenus dans le groupe alkyle ou alkylène peuvent être substitués par - CO-, -CONH-, -CON(CH3)-, -S- et/ou -0-, et R1, R2, R3 et/ou R4 peuvent agir comme un élément de liaison reliant au moins deux éléments structurels. L'invention concerne également un procédé permettant de produire l'initiateur et une composition polymérisable comprenant l'initiateur, un procédé permettant de produire la composition polymérisable, une trousse comprenant une kit composition durcissable cationiquement et l'initiateur selon l'invention et l'utilisation de ce dernier ou de la composition polymérisable comprenant l'initiateur pour diverses applications, notamment dans le domaine dentaire.

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