| 摘要 |
<p>Copolymers of vinylic monomers including tetrafluoroethylene and ethylene are made by aqueous emulsion polymerisation at 30 to 95 DEG C and a pressure of 1.5 to 4MPa using a peroxy polymerisation initiator and in the presence of tert.-butyl alcohol and of 1,1,2,2-tetra-chloro-1,2-difluoro-ethane.</p> |
