申请人:University of South California
公开号:US05169916A1
公开(公告)日:1992-12-08
Poly(1-hydro-1-R-1-sila-cis-pent-3-ene) and poly(1-hydro-1-R-3,4 benzo-1-sila pent-3-ene) polymers having repeating units of the general formula ##STR1## where R is hydrogen, an alkyl radical containing from one to four carbon atoms or phenyl, R.sup.1 is hydrogen, an alkyl radical containing from one to four carbon atoms, phenyl or a halogen and R.sup.2 is hydrogen, or R.sup.1 and R.sup.2 are combined to form a phenyl ring, are prepared by the anionic ring opening polymerization of silacyclopent-3-enes or 2-silaindans with an organometallic base and cation coordinating ligand catalyst system.
具有通式 ##STR1## 的重复单元的聚合物Poly(1-hydro-1-R-1-sila-cis-pent-3-ene)和poly(1-hydro-1-R-3,4 benzo-1-sila pent-3-ene)的制备方法,其中R为氢,含有1至4个碳原子的烷基基团或苯基,R.sup.1为氢,含有1至4个碳原子的烷基基团,苯基或卤素,R.sup.2为氢,或R.sup.1和R.sup.2结合形成苯环,通过有机金属碱和阳离子配位配体催化剂体系的硅杂环戊烯或2-硅吲哚的负离子开环聚合制备。