Dental materials based on urethane-group-containing vinylcyclopropane derivatives
申请人:Ivoclar Vivadent AG
公开号:US11135136B2
公开(公告)日:2021-10-05
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, R1 is a linear or branched C1-C8-alkyl radical, which can be interrupted by O, S, an ester group or a urethane group, R2 is a linear or branched C2-C10-alkylene radical, which can be interrupted by O, S, an ester group or a urethane group, R3 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 的乙烯基环丙烷
其中 X、Y 在每种情况下均为 O 或 NH,其中 X 和 Y 的含义不能相同;R1 是线性或支链 C1-C8 烷基,可被 O、S、酯基或氨基甲酸乙酯基团打断;R2 是线性或支链 C2-C10 烯基,可被 O、S、酯基或氨基甲酸乙酯基团打断;R3 是具有 1 至 20 个碳原子的烃基,可被 O、S、酯基或氨基甲酸乙酯基团打断、R3 是含有 1 至 20 个碳原子的烃基,此外还可以含有一个或多个 N、O 或 S 原子,n 是 1、2、3 或 4,最好是 1 或 2。乙烯基环丙烷的特点是在自由基聚合时收缩率低、反应活性高,尤其适用于制备牙科材料。