| abstract |
Provided are polymerizable compositions comprising:n (a) a sulfinate represented by the general formula [I]n 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 monomer (b) referred to below, M n+ represents a n-valent cation, and n represents an integer of 1 to 4; and (b) a monomer. n (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. |