| 摘要 |
The invention relates to an initiator comprising at least one structural element characterized by the following formula (I) wherein X - is a non or l ow 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.
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