| abstract |
The present invention relates to novel thermoplastic (co) polyimides and methods for their synthesis. More specifically, the present invention relates to thermoplastic (semi-aromatic) (co) polyimides obtained by polymerization of at least one aromatic compound comprising 2 anhydride functions and / or its derivatives, in particular carboxylic acid and / or ester, and at least one diamine. of formula (I) NH-R-NH in which R is a divalent saturated aliphatic hydrocarbon radical, the two amine functions of which are separated by 4 to 6 carbon atoms, and in which 1 or 2 hydrogen atoms of the divalent radical are substituted by 1 or 2 methyl and / or ethyl groups. These (co) polyimides can be made into plastic articles by various methods such as extrusion, molding or blowing. |