公开(公告)号：US12116381B2

公开(公告)日：2024-10-15

申请号：US16639924

申请日：2018-08-24

申请人： NIPPON PAPER INDUSTRIES CO., LTD.

发明人： Takuma Nakamura ,  Akihiko Nakamura ,  Sumio Tamura ,  Kanae Takahashi ,  Yoshito Nishimori

IPC分类号： C04B11/00 ,  C04B7/02 ,  C04B24/18 ,  C07G1/00 ,  C09K23/50 ,  C09K23/52 ,  C08H7/00

CPC分类号： C07G1/00 ,  C04B7/02 ,  C04B11/00 ,  C04B24/18 ,  C08H6/00

摘要： From the viewpoint of a decrease in environmental impact in recent years, an object of the present invention is to effectively utilize lignin as a circulative biomass resource having high effect of reducing environmental impact. Specifically, the object is to provide a lignin derivative that can improve the dispersibility of various substances to be dispersed regardless of uses of cements, dyes, oil field drilling mud, and the like. The present invention provides a lignin derivative compound that is a reaction product of a lignin sulfonic acid-based compound with an aromatic water-soluble compound, and a dispersant containing the same. The lignin derivative compound preferably has an anionic functional group and/or a polyalkylene oxide chain.