| abstract |
1483523 Unsaturated polyamides SNIA VISCOSA SOC NAZIONALEINDUSTRIA APPLICAZIONI VISCOSA SpA 11 July 1974 [11 July 1973] 23494/76 Divided out of 1483521 Heading C3R [Also in Division C2] Saturated and unsaturated polyamides are prepared by the condensation of an omegaamino alkenoic acid (8-12 C) by heating. Examples describe the treatment of 12-aminot,t-4,8-dodecadienoic acid and 12-aminododecanoic acid and 8-amino-octanoic acid. Unsaturated polyamides may be reduced to the corresponding saturated polyamide. |