Aromatic copolyamides containing ether linkages.

摘要

Novel copolyamides having the recurring unit
<Chemistry id="chema01" num="0001"><Image id="ia01" he="16" wi="50" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>are disclosed wherein Ar in the major proportion of the recurring units is m-phenylene and in the corresponding minor proportion (but more than 10 percent) of the recurring units Ar is a phenylene ether having the formula
<Chemistry id="chema02" num="0002"><Image id="ia02" he="16" wi="89" file="IMGA0002.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>The copolyamides have excellent high temperature, resistance but, unlike those polymers in which Ar in the above recurring unit is exclusively m-phenylene, they can be injection molded.