Polycyclocondensation, high-temperature

Polycyclocondensation, high-temperature catalytic 142, 146, 148-162 Polydimethylacrylamide 19 Polyelectrolytes, water-soluble 49 Polyethylene glycol nonyl phenol 58 Polyheteroarylenes 158, 162, 167 Polynaphthoylenebenzimidazoles 118,146-165... 

High-temperature (160-180 °C) polycyclocondensation of the starting monomers in w-cresol, using quinoline as catalyst. In almost all cases polyimides obtained in w-cresol demonstrated higher solution viscosities than the same polymers synthesised in NMP. 

Synthesis of polyimides containing benzothiazole-2-sulfide groups was carried out using high-temperature polycyclocondensation in w-cresol in accordance with Scheme 5.7 [41, 44]. All the polyimide synthesis reactions were homogeneous and yielded polymers having reduced viscosities Pred = 0.29-0.42 dl/g, Tg = 215-265 °C and 10% weight loss temperature = 325-400 °C (Table 5.9). 

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