PURPOSE: To melt-mold an arom. polyamide under mild conditions, by adding a high-boiling arom. compd. to an amorphous arom. polyamide.
CONSTITUTION: 0.1W40pts.wt. high-boiling arom. compd. having a b.p. of 200°C or higher such as β-naphthol is added to 100pts.wt. amorphous arom. polyamide having a glass transition point of 150W400°C, an inherent viscosity of 0.5W3 and a repeating unit of the formula wherein Ar, is an arom. group, a heterocyclic group or a bivalent group composed of these groups in combination (these groups may be substituted with alkyl, cycloalkyl, aryl, alkoxy or halogen); two carbonyl groups attached to Ar1 are bonded to different two carbon atoms of Ar1; Ar2 is the same as Ar1, and Ar1, Ar2 may be the same or different groups; two N atoms attached to Ar2 are bonded to different two carbon atoms of Ar2. The mixture is molten by heating it, and extruded or compression-molded.
KAWAMATA MOTOO
TOYODA TOSHIHIRO
BABA KENICHI
