abstract |
High performance copolymers have been developed comprising a rigid rod backbone having a chain length of at least 25 monomer units assembled by covalent bonds, in which at least about 95% of the bonds are substantially parallel, as well as organic solubilization groups having an average molecular weight of at least 300, attached to at least 1% of the monomer units. The polymers are prepared in a solvent system, which is a solvent for both the starting materials of the monomers and the product of the rigid rod polymers. |