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One-step synthesis of aromatic polyimides based on 4,4′-diaminotriphenylmethane

✍ Scribed by D. Likhatchev; L. Alexanrova; M. Tlenkopatchev; A. Martinez-Richa; R. Vera-Graziano

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
334 KB
Volume
61
Category
Article
ISSN
0021-8995

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✦ Synopsis

The feasibility of using a one-step high-temperature polycondensation for the synthesis of aromatic polyimides, based on 4,4'-diaminotriphenylmethane (DA-TPM), was studied. It was found that the reaction of DA-TPM with various aromatic dianhydrides in nitrobenzene at 180-200°C resulted in the formation of the high molecular weight soluble polyimides, PI-TPM. The reaction solutions cooled to ambient temperature were used for casting films. These PI-TPM films significantly exceeded their prototypes obtained by the thermal imidization of poly(amic acids) in terms of solubility and tensile properties. All studied polyimides demonstrated well-distinguished glass transition at 260-320OC.

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