申请人:Dentsply DeTrey GmbH
公开号:EP2870956A1
公开(公告)日:2015-05-13
Photocurable dental composition comprising
(a) one or more radical-polymerizable monomers, and
(b) 0.1 to 7.0 percent by weight based on the total weight of radical polymerizable monomers in the composition of a compound of the following formula (I):
R1R2R3X(CO)X'R4R5R6 (I)
wherein
X and X' which may be the same or different, independently represent Si or Ge,
R1, R2, R3, R4, R5, and R6, which may be the same or different, independently represent a hydrocarbon group having 1 to 20 carbon atoms, whereby any two hydrocarbon groups of R1, R2, R3, R4, R5, and R6 may be bonded to each other and form together with either X, X' or the moiety X(CO)X' to which they are attached a 3 to 12- membered heterocyclic ring,
whereby any of the hydrocarbon group or the heterocyclic ring may
- contain one or more keto groups other than the keto group of the X(CO)X' moiety, or
- be substituted by on or more groups selected from halogen atoms, a cyano group, an amino group or a hydroxy group, and
- in case the hydrocarbon group or the heterocyclic ring contains an alkylene chain or an alkenylene chain, one or more carbon atoms in the alkylene chain or alkenylene chain may be replaced by an oxygen atom, a sulfur atom, an amide group, an ester group, a urethane group or an NH group.
光固化牙科组合物,包括(a)一种或多种自由基聚合单体,和(b)根据组合物中自由基聚合单体的总重量,占0.1至7.0重量百分比的以下式(I)化合物:R1R2R3X(CO)X'R4R5R6,其中X和X'可以相同也可以不同,独立地表示Si或Ge,R1、R2、R3、R4、R5和R6可以相同也可以不同,独立地表示具有1到20个碳原子的碳氢基团,其中R1、R2、R3、R4、R5和R6的任意两个碳氢基团可以彼此结合,并与它们附着的X、X'或X(CO)X'基团一起形成一个3到12环的杂环,其中碳氢基团或杂环中的任何一个可以包含一个或多个酮基,除了X(CO)X'基团的酮基之外,或可以被卤素原子、氰基、氨基或羟基等一种或多种基团取代,如果碳氢基团或杂环中包含一个烷基链或烯基链,则可以将烷基链或烯基链中的一个或多个碳原子替换为氧原子、硫原子、酰胺基、酯基、脲基或NH基。