Cycloolefin polymers

Since the last edition several new materials have been aimounced. Many of these are based on metallocene catalyst technology. Besides the more obvious materials such as metallocene-catalysed polyethylene and polypropylene these also include syndiotactic polystyrenes, ethylene-styrene copolymers and cycloolefin polymers. Developments also continue with condensation polymers with several new polyester-type materials of interest for bottle-blowing and/or degradable plastics. New phenolic-type resins have also been announced. As with previous editions I have tried to explain the properties of these new materials in terms of their structure and morphology involving the principles laid down in the earlier chapters. 

Name and characterise bonds anchoring the growing chain of cycloolefin polymers at the transition metal atom, depending on the kind of catalyst. 

Give the structure and stereochemical designation of all possible cycloolefin polymers that might, in principle, be obtained by stereospecific ring-retaining polymerisation. 

TABLE 57.5. Absorbance of some cycloolefin polymers, copolymers, and reference polymers [30]. 

Cycloolefin polymers Hoechst Mitsui Sekka 1997 = Polycarbonate Glass... 

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