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sulfonium

   Also found in: Wikipedia 0.01 sec.
sul·fo·ni·um  (sl-fn-m)
n.
A positive ion or univalent radical containing trivalent sulfur, such as H3S.



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Cationic photo-polymerization uses photo-initiators such as iodonium and sulfonium salts to produce cross-linked films from epoxy monomers.
Thermally Induced Cationic Polymerizations Recently, the use of a number of sulfonium salts for thermally induced cationic polymerization has been reported (16), (17).
Photoinitiators have many forms, including sulfonium and iodonium salts, (1), (2) Type I photoinitiators including acetophenone derivatives, Type II photointiators based on hydrogen abstraction mechanisms such as that between benzophenone and N-methyl-N, N-dieth-anolamine, and a variety of specialized photoinitiators such as those of maleimides and related compounds (3-8) and of thiolene systems.
 
 
 
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