Industrial lignosulfonate is modified to graft carboxy by the free radical copolymerization reaction to synthesize a kind of scale inhibitor-the carboxylic lignosulfonate.

• 采用自由基共聚反应,对工业磺化木质素进行接枝羧基的改性,制备得到羧酸型磺化木质素阻垢剂。