Abstract: In methanol solution, paraformaldehyde was used as substitution of formaldehyde and melamine and hydroxymethylation was taken place under alkaline condition.

 
  • 文章摘要: 在甲醇溶液中,用多聚甲醛部分代替甲醛溶液与三聚氰胺在碱性条件下发生羟甲基反应,初缩体在酸性条件下与甲醇同时发生醚化、自身缩聚,最后调碱降低树脂黏度制得水溶性好、固含量高的改性三聚氰胺甲醛树脂湿强剂。
今日热词
目录 附录 查词历史