| 摘要 |
<p>A process for producing a phenolic resin satisfactory in hue, characterized by reacting a hydroxylated aromatic compound with an unsaturated cyclic hydrocarbon compound in the presence of both active hydrogen and a reducible metal compound with the aid of an acid catalyst, subsequently deactivating the catalyst, and then removing the catalyst, the metal compound, and the starting materials remaining unreacted; and a process for producing an epoxy resin which comprises reacting the phenolic resin with an epihalohydrin. By these processes, a phenolic resin and an epoxy resin are obtained which each is colored little and has an excellent hue. These resins are useful as resins for electrical insulating materials, especially as resins for semiconductor encapsulation materials and laminating resins.</p> |
