Ladderlike polychloropropylsilsesquioxane (CP-T) was first synthesized by "
stepwise coupling polymerization". The molecular weight of CP-T is as high
as 1.7 x 10(5). It is a tough, elastic reactive ladderlike polymer and has
good heat-resistant and adhesive properties. CP-T can further react with ma
ny nucleophilic reagents to generate new ladderlike reactive polysilsesquio
xanes, which can be used as potential precursors in the synthesis of functi
onal ladderlike polymers.