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Medientyp: E-Artikel Titel: Direct hydrogenation of nitrile butadiene rubber latex using M41 catalyst Beteiligte: Liu, Junjie; Jia, Mingqi; Yuan, Fei; Hong, Zitong; Tong, Weichao; Zheng, Chengzhuo; Wang, Chuanqi; Wang, Hui Erschienen: Wiley, 2023 Erschienen in: Polymer International, 72 (2023) 9, Seite 804-812 Sprache: Englisch DOI: 10.1002/pi.6552 ISSN: 1097-0126; 0959-8103 Schlagwörter: Polymers and Plastics ; Materials Chemistry ; Organic Chemistry Entstehung: Anmerkungen: Beschreibung: AbstractHydrogenated nitrile butadiene rubber (HNBR) is a high‐performance elastomer widely used in the petrochemical and automotive industries. A ruthenium‐based catalyst, namely [1,3‐bis(2,4,6‐trimethylphenyl)‐2‐imidazolidinylidene]‐[2‐[[(4‐methylphenyl)imino]methyl]‐4‐nitrophenoyl]chloro[3‐phenylindenylidene]ruthenium(II) (M41), was investigated for the direct hydrogenation of NBR latex. The catalytic selectivity for the hydrogenation of CC bond instead of CN group was confirmed by both Fourier transform infrared and 1H NMR spectroscopies. The effects of reaction conditions (such as temperature, pressure, catalyst levels, agitation speed and solid content) on the hydrogenation reaction were examined, and hydrogenation products with over 95 mol% conversion were obtained for only 3 h with a catalyst/NBR ratio of 0.05 wt% and no gel was formed within HNBR. The results suggest that the current limitations in the hydrogenation of NBR latex could be addressed with this catalyst. © 2023 Society of Industrial Chemistry.