@misc{kricheldorf_polyimides_based_2005, 
author={Kricheldorf, H.R., Fan, S.-C., Vakhtangishvili, L., Schwarz, G., Fritsch, D.},
title={Polyimides Based on New Diamines Having Pendant Imide Groups},
year={2005},
howpublished = {journal article},
doi = {https://doi.org/10.1002/pola.21087},
abstract = {New aromatic diamines were prepared in two steps from 4,5-dichlorophthalic anhydride and primary amines. The resulting 4,5-dichlorophthalimide was reacted with 4-mercaptoaniline, so that the chloroatoms were substituted by the mercapto groups (via the sulfide anions). The new diamines were polycondensed either with the diphenyl ether 3,3,4,4-tetracarboxylic anhydride or with bicyclooctane tetracarboxylic anhydride. These polycondensations were conducted in boiling m-cresol with azeotropic removal of water. The isolated polyimides were characterized by viscosity measurement, IR-spectroscopy, elemental analyses, and MALDI-TOF mass spectrometry. The mass spectra evidenced a high content of cyclic polyimides, indicating nearly perfect reaction conditions. The mass spectra also proved the formation of copolymers containing one diamine with a trialkylamine group in the side chain. High glass transition temperatures but a low crystallization tendency were found by DSC measurements.},
note = {Online available at: \url{https://doi.org/10.1002/pola.21087} (DOI). Kricheldorf, H.; Fan, S.; Vakhtangishvili, L.; Schwarz, G.; Fritsch, D.: Polyimides Based on New Diamines Having Pendant Imide Groups. Journal of Polymer Science  A. 2005. vol. 43, no. 24, 6272-6281. DOI: 10.1002/pola.21087}}