COMPOSITION BASED ON POLY(ARYLENE ETHER KETONE) HAVING IMPROVED PROPERTIES

摘要

To provide a composition exhibiting remarkable reduction of internal stress so that a step after additional annealing can be omitted.SOLUTION: There is provided a composition based on poly(ether ether ketone) (PEEK) containing poly(ether ketone ketone) (PEKK), in which the poly(ether ketone ketone) (PEKK) contains a mixture of a terephthalic acid unit and an isophthalic acid unit, and weight percentage of the terephthalic acid unit is between 55 and 85% (including border) based on total of the terephthalic acid unit and the isophthalic acid unit, preferably between 55 and 70%, and containing 1 to 40 wt.% (including border), preferably 5 to 40 wt.%, more preferably 10 to 30 wt.% of PEKK based on total weight of the composition.SELECTED DRAWING: Figure 1