The water-undissolved part of the phenolated lignosulfonate was epoxidized by epichlorohydrin catalyzed by sodium hydroxide.Two kinds of lignin base epoxy resins were prepared in this way.

• 酚化产物中不溶于水的部分在碱催化下用环氧氯丙烷环氧化,同时得到两种木质素基环氧树脂。