Antibacterial hyperbranched polymer leather retanning agent

• Main Authors: TIAN SAIQI, ZHU YIFAN, DING SHENG, CHEN YINYAN
• Format: Patent
• Language: Chinese; English
• Published: 19.03.2021
• Subjects: APPARATUS THEREFOR; CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING,IMPREGNATING, FINISHING; CHEMISTRY; COMPOSITIONS FOR TANNING; HIDES; LEATHER; METALLURGY; PELTS; SKINS

The invention discloses an antibacterial hyperbranched polymer leather retanning agent which is prepared by the following steps: modifying an imino-containing antibacterial agent ciprofloxacin by using hexamethylene diisocyanate trimer to prepare -NCO-terminated ciprofloxacin, sequentially extending chains by using the antibacterial agent, pentaerythritol and isocyanate by using pentaerythritol asa core, and finally, terminating by using 2, 2-dimethylolpropionic acid, and preparing the antibacterial hyperbranched polymer retanning agent. According to the retanning agent, on the premise that good retanning performance is obtained, the antibacterial agent is introduced into the hyperbranched polymer retanning agent in a covalent bond mode, and the lasting and stable antibacterial characteristic can be given to the retanning agent. 本发明公开了一种抗菌型超支化聚合物皮革复鞣剂，用六亚甲基二异氰酸酯三聚体对含有亚氨基的抗菌剂环丙沙星进行改性，制得-NCO封端的，再以季戊四醇为核，用抗菌剂、季戊四醇、异氰酸酯相继扩链，最后用2,2-二羟甲基丙酸进行封端，制备抗菌型超支化聚合物复鞣剂，本发明的复鞣剂在获得良好复鞣性能的前提下，将抗菌剂以共价键的形式引入超支化聚合物复鞣剂中，可赋予复鞣剂持久稳定的抗