Patent ID: 7084213

Claim:
A polymer composition comprising chains of first and second aromatic polymers of number average molecular weight in a first range, each having at least one reactive end group and having the same polymer backbone but different end groups, the first aromatic polymer having a lower flow temperature than the second similar aromatic polymer, both being amorphous the second polymer being rendered in flowable form in the presence of the first polymer in fluid form, thereby providing a processing aid, or an amorphous first aromatic polymer and a second crystalline or semi crystalline aromatic polymer having a characteristic melting point, the semi crystalline aromatic polymer being rendered flowable by solvent effect of the first polymer, acting as a cosolvent, diluent, dispersant, carrier or the like for the second aromatic polymer, wherein the at least one chain linking component comprises at least two linking sites, characterized in that a plurality of the first and second aromatic polymer chain end groups are adapted to react with the linking sites at chain linking temperature in excess of the polymer flow temperature to form linked polymer chains of number average molecular weight in a second range which is in excess of the first range, substantially thermoplastic in nature.