The use of soluble methylol compounds from primary or secondary amines or ammonia with formaldehyde in diazotypes improves solution compatibility and prevents coupler migration upon storage of diazotype materials. The methylol compounds may be reacted with couplers separately or added to the coating preparations.
在重氮涂料中使用由
伯胺、仲胺或
氨与
甲醛组成的可溶性
甲醇化合物,可提高溶液的相容性,并防止重氮涂料储存时耦合剂迁移。
甲醇化合物可以单独与耦合剂反应,也可以添加到涂层制剂中。