PROBLEM TO BE SOLVED: To provide a new acylphosphine oxide compound which can impart high dentin adhesiveness to a composition, when combined with a polymerizable monomer to form the composition, and can impart stable adhesiveness little in irregularity among adhesion operations.SOLUTION: There is provided a compound (I) represented by general formula (1), [wherein, R1 to R15 are each independently H, a group represented by general formula (2), or a 1 to 20C organic group which may have one or more substituents at least one of R1 to R15 is a group represented by general formula (2), (wherein, R16 is H or a 1 to 20C organic group which may have one or more substituents R17 is H, or a 1 to 20C organic group which may have one or more substituents X is O, S, -C(R18)(R19)- (R18 and R19 are each independently H or a 1 to 20C organic group which may have one or more substituents), or -N(R20)- (R20 is H or a 1 to 20C organic group which may have one or more substituents))].COPYRIGHT: (C)2012,JPO&INPIT【課題】重合性単量体と組み合わせて組成物とした場合に、組成物に、歯質に対する高い接着性を付与でき、また、接着操作間のばらつきが小さい安定した接着性を付与できる新規なアシルホスフィンオキサイド化合物を提供する。【解決手段】下記一般式(1)で表される化合物(I)である。式中の各記号は、明細書中に定義の通りである。【選択図】なし
