Patente:
M. M. Unterlass, S.R. Espana-Orozco:
"Verfahren zur Herstellung von Polyimiden";
Patent: United States,
Nr. Us 2019/0177483 A1;
eingereicht: 21.08.2017,
erteilt: 15.02.2019.
Kurzfassung englisch:
A method is provided for producing polyimides by polycondensation of previously produced stoichiometric salts from polycarboxylic acids or their polyanhydrides and polyamines by heating the salts for dehydration. In the method, a) an aqueous solution of a water-soluble stoichiometric salt is produced from polycarboxylic acid and polyamine; b) the aqueous solution undergoes a processing step; and c) the salt contained in the solution is simultaneously or subsequently polycondensed, by heating to form a polyimide.
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.