| abstract |
A process for producing a phenolic novolak which includes the step of reacting a phenol with an aldehyde in a heterogeneous system in the presence of a phosphoric acid compound and an unreactive oxygenous organic solvent as a reaction co-solvent. Thus, a phenolic novolak reduced in phenol monomer content and phenol dimer content and having a regulated dispersity ratio can be obtained in a high yield. |