| 摘要 |
Novel copolyamides having the recurring unit <IMAGE> are disclosed wherein R, in 60 percent to 85 percent of the recurring units, is -CH2-x wherein x is an integer from 7 to 12 inclusive, and, in 15 percent to 40 percent of the recurring units, R is m-phenylene; and Ar is an arylene radical. The copolyamides are characterized by ease of melt processing such as in molding, extruding, and injection molding, while at the same time possessing good high temperature stability, and being further characterized by unexpectedly high impact and flexural strengths.
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