The invention relates to a composition which is polymerizable by ring-opening metathesis polymerization (ROMP) comprising at least one monomer that is polymerizable by ROMP, at least one initiator of the Hoveyda-Grubbs type for initiating the ROMP and at least one retarder selected from the group consisting of heterocyclic a means having a ring with at least one N-atom and five or less atoms constituting the ring bearing the at least one N-atom. The invention further relates to a process for the preparation of a composition which is polymerizable by ROMP, a dental material obtainable by polymerizing a composition according to the invention and the use of a substance selected from the group consisting of heterocyclic amines having a ring with at least one N-atom and five or less atoms constituting the ring bearing the at least one N-atom or of a mixture of two or more of such substances as a retarder in ROMP.
本发明涉及一种可通过开环偏聚聚合反应(ROMP)聚合的组合物,该组合物包含至少一种可通过ROMP聚合的单体、至少一种用于引发ROMP的Hoveyda-Grubbs型
引发剂和至少一种选自具有至少一个N原子的环和五个或更少的原子构成具有至少一个N原子的环的杂环组成的组的缓凝剂。本发明还涉及一种可通过 ROMP 聚合的组合物的制备方法、一种可通过聚合根据本发明制备的组合物而获得的牙科材料,以及在 ROMP 中使用一种选自杂环胺的物质作为缓凝剂,该杂环胺具有至少一个 N 原子和五个或更少的原子组成的环,或两种或更多种此类物质的混合物。