| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sulfonium salt which is highly photosensitive to an i-line. <P>SOLUTION: The sulfonium salt is represented by formula (1) and/or formula (2). [In formula (1) and/or formula (2), R<SP POS="POST">1</SP>to R<SP POS="POST">3</SP>each independently represents alkyl, hydroxy, alkoxy, alkylcarbonyl, arylcarbonyl, alkoxycarbonyl, aryloxycarbonyl, arylthiocarbonyl, acyloxy, arylthio, alkylthio, aryl, heterocyclic hydrocarbon, aryloxy, alkylsulfinyl, arylsulfinyl, alkylsulfonyl, arylsulfonyl, hydroxy(poly)alkyleneoxy, optionally substituted amino, cyano, nitro, or a hologen atom; R<SP POS="POST">4</SP>represents alkyl or aryl; m1, m2 and m3 represent the number of R<SP POS="POST">1</SP>, R<SP POS="POST">2</SP>and R<SP POS="POST">3</SP>, respectively; m1 reprents an integer of 0-5; m2 represents an integer of 0-3; m3 represents an integer of 0-4; and X<SP POS="POST">-</SP>represents a monovalent polyatomic anion]. <P>COPYRIGHT: (C)2012,JPO&INPIT |
