申请人:Ivoclar AG
公开号:US05703249A1
公开(公告)日:1997-12-30
The present invention relates to novel bicycloaliphatic 2-methylene-1,3-dioxepanes, which are suitable as starting materials for the preparation of polymers and copolymers, preferably of composite and dental materials. The 2-methylene-1,3-dioxepanes according to the invention, which can undergo radical polymerisation with ring opening with only very little volume shrinkage, can be prepared in a simple manner, are easy to purify and to modify chemically, and are characterised by lack of odour and advantageous physical properties.
本发明涉及一种新型双环脂肪族2-亚甲基-1,3-二氧杂环庚烷,可用作聚合物和共聚物的起始材料,特别是用于复合和牙科材料的制备。根据本发明,2-亚甲基-1,3-二氧杂环庚烷可以进行自由基开环聚合,仅有很少的体积收缩,可以简单地制备,易于纯化和化学修饰,并且具有无味和有利的物理特性。