| 摘要 |
Polyamides are stabilized by incorporating a complex of cuprous iodide with a trihydrocarbon phosphine or phosphite in the polymerization mixture before, during, or after the polymerization. Suitable polyamides are the polymerization products of lactams, e.g. caprolactam, oenantholactam, laurinolactam, or of aminocarboxylic acids, or of diamines with dicarboxylic acids. A suitable polyamide is prepared by reacting caprolactam, water and acetic acid at 260 DEG C. in a nitrogen atmosphere. The stabilized polymers may be formed into a shaped article, e.g. a filament.ALSO:Novel complexes of cuprous iodide with a trihydrocarbon phosphine or phosphite are prepared by simple mixing of the two components in an organic solvent, followed by filtration and solvent removal. The complexes have a mol. ratio of cuprous iodide to phosphine or phosphite of 1:2. Suitable phosphines and phosphites are triphenyl-, trihexyl- or tridecyl phosphine or phosphite, phenyl didecyl phosphite and diphenyl decyl phosphite. The complexes are used as stabilizers for polyamides. |
