Process for the manufacture of thermoplastic material,...

Details Process for the manufacture of thermoplastic material,... Process for the manufacture of thermoplastic material,...

C - Chemistry, Metallurgy

08

F

C08F 22/06 (2006.01) C08F 8/32 (2006.01) C08F 8/48 (2006.01)

Patent

CA 2061715

PROCESS FOR THE MANUFACTURE OF THERMOPLASTIC MATERIAL, TERMOPLASTIC MATERIAL OBTAINED AND ITS USE AS A HIGH TEMPERATURE RESISTANT TRANSPARENT MATERIAL Abstract The invention relates to a process for the manufacture of thermoplastic material which has a high glass transition temperature, this process being characterised in that a starting polymer is prepared, containing anhydride units among its constituent units, in that a sufficient quantity of primary amine or of a mixture of primary amines is reacted for the anhydride units to be converted at least partially to acid-amide units, and in that the ring closure of the polyacid-amide obtained is carried out. The thermoplastic material obtained can be used especially to form high temperature resistant optical fibres. (no drawing)

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