Production process for polyimide fibers

Details Production process for polyimide fibers Production process for polyimide fibers

C - Chemistry, Metallurgy

08

G

402/220, 18/614

C08G 73/10 (2006.01) D01D 5/098 (2006.01) D01F 6/74 (2006.01)

Patent

CA 2002147

ABSTRACT A process for the production of polyimide fibers and polyimide fibers obtained by the process. The process includes thermal or chemical imidation of a polyamic acid which has been obtained by reacting a specific diamine and a particular tetracarboxylic dianhydride in the presence of a dicarboxylic anhydride represented by the following formula: Image wherein Z represents a divalent group selected from the group consisting of monocyclic aromatic groups, fused polycyclic aromatic groups and non-fused polycyclic aromatic groups with aromatic rings bonded together directly or via a crosslinking member.

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