DENTAL MATERIALS BASED ON URETHANE-GROUP-CONTAINING VINYLCYCLOPROPANE DERIVATIVES
申请人:Ivoclar Vivadent AG
公开号:US20190167533A1
公开(公告)日:2019-06-06
Vinylcyclopropane of general formulae I
in which X, Y in each case are O or NH, wherein X and Y cannot have the same meaning, R
1
is a linear or branched C
1
-C
8
-alkyl radical, which can be interrupted by O, S, an ester group or a urethane group, R
2
is a linear or branched C
2
-C
10
-alkylene radical, which can be interrupted by O, S, an ester group or a urethane group, R
3
is a hydrocarbon radical with 1 to 20 carbon atoms, which additionally can contain one or more N, O or S atoms, and n is 1, 2, 3 or 4, preferably 1 or 2. The vinylcyclopropanes are characterized by a low shrinkage and a high reactivity on radical polymerization and are suitable in particular for the preparation of dental materials.
通式I的乙烯环丙烷
其中X,Y在每种情况下均为O或NH,其中X和Y不能具有相同的含义,R
1
是线性或支链的C
1
-C
8
-烷基基团,可以被O,S,酯基团或脲基团中断,R
2
是线性或支链的C
2
-C
10
-烷基烃基团,可以被O,S,酯基团或脲基团中断,R
3
是具有1至20个碳原子的烃基团,此外还可以含有一个或多个N,O或S原子,n为1,2,3或4,优选为1或2。乙烯环丙烷的特点是在自由基聚合中具有低收缩和高反应性,并且特别适用于制备牙科材料。