| 摘要 |
New aromatic sulfonylsulfoxonium salts are of formula <IMAGE> where q is 1 to 4, R denotes an aliphatic, cycloaliphatic, or aromatic group, R6 denotes H, an alkyl or aralkyl group, or a group -COR9, -CO-NH-(CO)r-R10, or -SO2-R11, where r is zero or 1, one, but not both, of R and R6 denoting an aromatic group, R7 denotes an alkyl, alkenyl, cycloalkyl, cycloalkylalkyl, or aralkyl group, R8 has the same meaning as R7 but may alternatively represent a dialkylamino group or, if R7 denotes alkyl, it may alternatively represent an arylamino group, R9, R10, and R11 each denote an alkyl, aryl, or aralkyl radical of 1 to 25 carbon atoms, t is 1, 2, or 3, and Z- denotes a t-valent anion of a protic acid. The salts, e.g., dimethyl-p-toluenesulfonylmethylsufoxonium hexafluorophosphate, are useful as catalysts for the polymerization of cationically polymerizable materials by means of actinic radiation and/or heat. Polyepoxides and resols may be photopolymerized in the presence of the salts and subsequently crosslinked with a latent heat-curing agent.
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