A cured phenolic resin may be prepared by reacting (1) an esterified phenolic compound containing one or more phenolic hydroxyl groups and/or one or more esterified phenolic hydroxyl groups and further containing one or more esterified methylol groups ortho and/or para to the (esterified) phenolic hydroxyl group and (2) a phenolic resole resin in the presence of a base and water and/or other polar solvent. This technique may be used in the production of phenolic-based adhesives, foundry moulding compositions, surface coatings, foams and proppants.  
                            固化
酚醛
树脂可通过以下反应制备:(1) 含有一个或多个
酚羟基和/或一个或多个酯化
酚羟基并进一步含有与(酯化)
酚羟基正交和/或对位的一个或多个酯化
甲醇基的酯化
酚化合物;(2) 在碱和
水和/或其他极性溶剂存在下的
酚醛再烯
树脂。这种技术可用于生产
酚基粘合剂、铸造成型组合物、表面涂层、泡沫和支撑剂。