| 摘要 |
Melt-condensed polyamide interpolymers consisting essentially of at least four different recurring polyamide repeat units in which (a) about 35 to 55 percent of the amide equivalents are polymethylene- omega -aminoacid repeat units of six to 20 carbon atoms, (b) about 10 to 30 percent of the amide equivalents are diamine diacid repeat units in which the diamine is polymethylene diamine of six to 20 carbon atoms and the diacid is polymethylene diacid of six to 20 carbon atoms, (c) about 10 to 30 percent of the amide equivalents are diamine diacid repeat units in which the diamine is polymethylene diamine of six to 20 carbon atoms and the diacid is polymethylene diacid of six to 20 carbon atoms different from the diacid of (b) above, and (d) about 10 to 30 percent of the amide equivalents are diamine diacid repeat units in which the diamine is polymethylene diamine of six to 20 carbon atoms and the diacid is polymethylene diacid of six to 20 carbon atoms different from the diacids of (b) and (c) above, have unusual solubility and/or low melting properties. These interpolymers are soluble to the extent of at least about 20 percent in common solvents at room temperature and/or melt completely at about 125 DEG C.
|
