Polyamide-imide ×-butyrolactone solutions, process for their...

Details Polyamide-imide ×-butyrolactone solutions, process for their... Polyamide-imide ×-butyrolactone solutions, process for their...

C - Chemistry, Metallurgy

08

G

C08G 73/14 (2006.01) C08J 3/09 (2006.01) D01F 6/74 (2006.01)

Patent

CA 2125698

2125698 9313158 La présente invention concerne des solutions limpides de PAI directement conformables ainsi que leur procédé d'obtention. Elles sont obtenues par polycondensation dans la .gamma.-butyrolactone (.gamma.BL) en proportions sensiblement stoechiométriques entre, du toluylène diisocyanate et un anhydride acide aromatique, puis dilution dans la .gamma.BL pour obtenir une solution permettant leur transformation ultérieure. La présente invention concerne également les fils et fibres obtenus à partir de ces solutions.

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