| 摘要 |
<p>Aromatic sulphones are of formula: (where X=SO2, SO2ArSO2, SO, CO, or CHArco (Ar is a divalent aromatic gp) and Z=Cl or OH). Esp. the cpd. where Z = Cl and X = SO2. The sulphones may be used in the prepn. of polyesters, polyethers, polythioethers, and polycarbonates.</p> |
