| 摘要 |
Provided are polymerizable compositions comprising: (a) a sulfinate represented by the general formula (I! wherein R1 and R5 each represents a substituent having 2 to 6 carbon atoms, R2, R3 and R4 each represents an atom or substituent inert to the below-described monomer (b), M n+ represents a n-valent cation and n represents an integer of 1 to 4 ; and (b) a monomer. (a) is an aromatic sulfinate substituted with bulky groups at its positions 2 and 6. Since the bulky substituents dramatically suppress the addition of the sulfinate to the double bond of the monomers, e.g. (meth)acrylates, (meth)acrylamides and derivatives thereof, the compositions can be stored at room temperature for at least 1 year and thus are of great industrial value and, in particular very useful as dental adhesive compositions.
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