Diethylphosphite and paraformaldehyde are used as the start materials, after hydroxymethylation and sulphonyl reaction got sulfo-group containing phosphonate.

以亚磷酸二乙酯和多聚甲醛为起始原料，在经羟甲基化、磺酸化后制备得到带有磺酸基的亚甲基膦酸二乙酯。

This experiment is divided into two steps: the hydroxymethylation reaction -- melamine resin was produced through the addition reaction using melamine and the formaldehyd; the etherification reaction - etherfied melamine resin was obtained by methyl alcohol used as etherifying agent.

该实验是分两步来制备：羟甲基化反应——利用三聚氰胺和甲醛在微碱性条件下进行加成反应生成羟甲基三聚氰胺；醚化反应——甲醇对羟甲基三聚氰胺进行醚化改性生成甲醚化三聚氰胺树脂。