Investigation of the solubility and crystallization of card-like polyimides in antimony trichloride

Andreyeva, V.M.; Tager, A.A.; Konevets, V.I.; Glukhikh, O.V.; Vygodskii, Ya. S.; Виноградова, С. В.; Korshak, V.V.

doi:10.1016/0032-3950(79)90223-5

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The Catalytic Methods Is Extremely Effective In the Reactions1

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1982

1996

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“…The results indicate the possibility of the crystallisation of cardo polypyromellitimides and cardo poly (naphthoylene imides) in antimony trichloride on phase separation of their solutions, which leads to new possibilities for the regulation of the properties of these polymers. 235 Table 6 (see over) presents the softening temperatures of a series of cardo polyimides. 211 ' 265 It is seen from these data that polymers with three and five condensed rings in the dianhydride residue have the highest heat resistance, which is significantly higher than that of the polyimides with phthalimidine groups having similar chemical structures (cf, for example, polymers Nos 1 and 10,5 and 4, or 6,7, and 8).…”

Section: The Catalytic Methods Is Extremely Effective In the Reactionsmentioning

confidence: 99%