申请人:——
公开号:US05808108A1
公开(公告)日:1998-09-15
Polymeric compositions are provided which are the reaction product of spiroorthocarbonates and epoxy resins and undergo reduced bulk polymerization shrinkage. The spiroorthocarbonates are of the general formula: ##STR1## wherein X=O or S; R.sub.1, and R.sub.2 are independently selected from the group consisting of H, alkyl, aryl, substituted alkyl, and substituted aryl; R.sub.3 and R.sub.4 =--(CH.sub.2).sub.n --O--R.sub.5 ; n=1 or 2; R.sub.5 =alkyl, aryl, substituted aryl, substituted alkyl, ##STR2## R.sub.6 =H, alkyl, aryl, substituted alkyl, or substituted aryl; and R.sub.7 =alkyl, aryl, substituted alkyl, or substituted aryl.
提供了聚合物组合物,其为螺环正碳酸酯和环氧树脂的反应产物,并经历了减少的体积聚合收缩。螺环正碳酸酯的一般式为:##STR1## 其中 X=O或S;R.sub.1和R.sub.2分别从H、烷基、芳基、取代烷基和取代芳基组成的群体中独立选择;R.sub.3和R.sub.4=--(CH.sub.2).sub.n--O--R.sub.5;n=1或2;R.sub.5=烷基、芳基、取代芳基、取代烷基、##STR2## R.sub.6=H、烷基、芳基、取代烷基或取代芳基;R.sub.7=烷基、芳基、取代烷基或取代芳基。