Cationic polymerization of bis(1‐alkylvinyl)benzenes and related monomers, 5. New thermostable polyindanes

Abstract

The cationic cyclopolymerization of six monomers of the type "1,4-bis(alk-2-en-2-yl)benzene" is described. The length of the unsaturated chains of the monomers ranges from 3 (propenyl) to 8 (octenyl) carbon atoms. The polymerization yields polyindanes containing different isomeric indane structure elements, which have alkyl substituents ranging from methyl to hexyl groups. The number of carbon atoms in the alkyl side chains greatly influences the glass transition temperature