公开(公告)号：US20220340718A1

公开(公告)日：2022-10-27

申请号：US17717041

申请日：2022-04-09

申请人： FUZHOU UNIVERSITY

发明人： Minghua Liu ,  Xiuhua Lin ,  Lihui Chen ,  Yaohua Liu ,  Weilin Wang

IPC分类号： C08G81/00 ,  C08H7/00

摘要： The invention discloses a lignin degradation product-bisphenol A-polyurethane polycondensate additive, and a preparation method thereof. Lignin is used as a raw material, and is degraded by an alkali activator, a metal catalyst and nitrobenzene to obtain the lignin degradation product; then, the obtained lignin degradation product is uniformly mixed with bisphenol A, and polyurethane is added; finally, the additive is obtained after heating reaction and drying. The preparation process of the invention is simple, and the obtained lignin degradation product has a small and stable molecular weight and has abundant phenolic hydroxyl and alcoholic hydroxyl sites, which can improve the dispersibility of the product, with strong cohesiveness and good waterproofness. It solves the problem of industrial application that lignin replaces part of phenols in the prior art, which leads to the decline of product performance, improves the total substitution rate of chemicals derived from biomass to bisphenol A derived from fossil resources, and significantly reducing the discharge of phenolic compounds. The additive is an environment-friendly polymeric material with excellent development potential.