| abstract |
A monomer containing a strained olefin ring such as cyclobutene or cyclopropene is polymerized by forming a complex of the monomer and Cp 2 TiCH 2 -(Cp is η 5 -C 5 H 5 ) and heating the complex in the presence of excess monomer to above the decomposition point. A controlled, selective opening of the ring with the strained olefin forms a linear, soluble polymer. |