A terpolyamide, formed from reactants polymerized in the presence of the equivalent of at least 3.0 mole percent of a monofunctional acid or basic stabilizer, is melt spun into filaments which are subsequently cold drawn. 4 Claims, No Drawings
Thermoplastic molding materials contain, as essential components, A) 40-95% by weight of a partly aromatic copolyamide having a triamine content of less than 0.5% by weight, consisting essentially of A.sub.1) 20-90% by weight of units derived from terephthalic acid and hexamethylenediamine, A.sub.2 5-50% by weight of units derived from .epsilon.-caprolactam and A.sub.3) 0-80% by weight of units derived from adipic acid and hexamethylenediamine, and B) 5-60% by weight of fibrous or particulate fillers or mixtures of these.
A ternary fibre forming copolyamide consisting essentially of the polymeric condensation product of (1) at least 50 percent by weight of hexamethylene diammonium adipate, (2) 20-40 percent by weight of hexamethylene diammonium terephthalate and (3) 2-20 percent by weight of a third polyamide.
C.sub.2 -C.sub.30 alkylamines admixed in small quantities with polypyrrolidone substantially improve the extrudability of the polymer.
4218509 - Polyamide copolymers - Owned by Imperial Chemical Industries, Limited (London,GB2) [*] Notice:The portion of the term of this patent subsequent to December 16, 1992 has been disclaimed.
Filaments and fibers formed from a ternary fibre-forming polyamide consisting essentially of the polymeric condensation product of (1) at least 50 percent by weight of hexamethylene diammonium adipate, (2) 20-40 percent by weight of hexamethylene diammonium terephthalate and (3) 2-20 percent by weight of a third polyamide.
Partly aromatic copolyamides contain as essential components A) 40-90% by weight of units derived from terephthalic acid and hexamethylenediamine, B) 0-50% by weight of units derived from .epsilon.-caprolactam and C) 0-60% by weight of units derived from adipic acid and hexamethylenediamine, the components B) and/or C) accounting for a total of not less than 10% by weight of the total units and the copolyamide having a triamine content of less than 0.5% by weight.
