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- W2053372661 abstract "(1) The influence of the type and quanti ty of catalyst, the molar ratio of reagents, the temperature and reaction time, on the polycondensation of nitrodiols and nitrotriols with m-, o-, and p-cresols was investigated. (2) The polycondensation was found to be slow without a catalyst; the addition of alkali makes it possible to get quantitative resin yields at 80-105°C. (3) Resins with a linear structure were obtained from nitrodiols with cresols, while the nitrotriols yielded products of steric structure; the latter type was also obtained when nitrodiols were reacted with m-cresol under severer conditions. (4) The resin yield was found to depend on the type and amount of alkaline catalyst used, the temperature and the reaction time. (5) The reactivities of the cresols and nitropolyols can be illustrated by the following descending-order sequences: m>o>p-cresol, and HMNPD >HMNBD >ENPD >MNPD >NPD. Translated by K. A. ALLE~" @default.
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- W2053372661 date "1969-01-01" @default.
- W2053372661 modified "2023-09-26" @default.
- W2053372661 title "The structure and properties of aromatic polyimides" @default.
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- W2053372661 doi "https://doi.org/10.1016/0032-3950(69)90083-5" @default.
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