PROBLEM TO BE SOLVED: To provide a phosphoric acid ester compound capable of imparting excellent adhesiveness and high mechanical strength when applied to a dental material, especially a dental adhesive material, and to provide a polymerizable composition capable of imparting a cured product having excellent adhesiveness and high mechanical strength suitable for a dental material.SOLUTION: There is provided a compound (A) represented by the following general formula (1) (wherein, R1, R2 and R3 each independently represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms R4 represents an organic group having 2 to 20 carbon atoms which may have a substituent R5 and R6 each independently represents a hydrogen atom, a hydrocarbon group having 1 to 20 carbon atoms which may have a substituent or a metal atom X represents one selected from the group consisting of a specific substituent such as -COO- and -CONH- Y1 and Y2 each independently represents one selected from the group consisting of -O-, -S- and -NH- and Z represents an oxygen atom or a sulfur atom.)COPYRIGHT: (C)2014,JPO&INPIT【課題】歯科用材料、特に歯科用接着材料に適用した場合に、優れた接着性と高い機械的強度を付与できるリン酸エステル化合物、並びに、歯科用材料に好適な、優れた接着性と高い機械的強度の硬化物を与え得る重合性組成物を提供すること。【解決手段】下記一般式(1)で表される化合物(A)。(式中、R1、R2及びR3は、それぞれ独立して水素原子又は炭素数1~20の炭化水素基を表し、R4は置換基を有してもよい炭素数2~20の有機基を表し、R5及びR6は、それぞれ独立して水素原子、置換基を有してもよい炭素数1~20の炭化水素基、又は金属原子を表し、Xは-COO-、-CONH-等の特定の置換基からなる群から選択される1種を表し、Y1及びY2は、それぞれ独立して、-O-、-S-、及び-NH-からなる群から選択される1種を表し、Zは酸素原子又は硫黄原子を表す)【選択図】なし
