ADDITIVE FOR POLYMERIZABLE COMPOSITION, POLYMERIZABLE COMPOSITION CONTAINING THE SAME, AND USE OF THE POLYMERIZABLE COMPOSITION

摘要

Disclosed is an additive for polymerizable compositions, which contains a compound represented by general formula (a). In general formula (a), R represents a saturated hydrocarbon group having 1-3 carbon atoms; M represents Sn, Sb, Bi or Ge; m represents 0 or 1, and R and M are not directly bonded when m is 0; n represents an integer of 1-3; and X represents a monovalent linking group, a plurality of X's may be the same as or different from each other, and when two or more linking groups X's are bonded with the metal atom M, the linking groups X's may combine together to form a ring.