| 摘要 |
Polyphenylenethers are prepared by oxidative polymerization of phenols in the presence of oxygen and of organic bases (amines), by using copper-based catalysts having general formula: (B)n(Cu)aXbYz wherein B=optionally substituted naphthiridie group, X=halogen, or nitro group or perchlorate group, Y=bridge compound between the copper atoms, of the pyrazole or imidazole type, z=0 or 1, wherefore: when z=0, a and n, either like or unlike each other, are 1 or 2, b=an integer from 1 to 3, extremes included, while, when z=1: n=a=2 b=3.
|
