The present invention relates to adhesive compositions that exhibit a significant decrease in polarity upon polymerization. More specifically, it relates to curable self etching dental adhesive compositions that can be applied to the tooth hard substance in one step and exhibit this decrease in polarity upon curing.
In this respect a formulation is provided combining phosphoric acid esters bearing substituents with one ethylenically unsaturated moiety on the phosphorus atom and phosphoric acid esters bearing substituents with two or more ethylenically unsaturated moieties on the phosphorus atom.
本发明涉及聚合时极性显著降低的粘合剂组合物。更具体地说,本发明涉及一种可固化的自蚀刻牙科粘合剂组合物,该组合物可一步应用于牙齿硬质物质,并在固化时表现出极性降低。
为此,本发明提供了一种配方,将
磷原子上带有一个
乙烯基不饱和取代基的
磷酸酯与
磷原子上带有两个或两个以上
乙烯基不饱和取代基的
磷酸酯结合在一起。