Claims
- 1. A thermoplastic polyamide moulding composition comprising a stabilizer system, said stabilizer system consisting essentially of a mixture of:(A) a copper halide, and at least one other halogen compound; and (B) hypophosphorous acid, or an alkali metal salt of hypophosphorous acid, or an alkaline earth metal salt of hypophosphorous acid; wherein the individual components of the stabilizer system are present in amounts such that:(1) the molar amount of halogen contained in the thermoplastic polyamide moulding composition is from about 6.6 to 8.9 times the molar amount of copper contained in the thermoplastic polyamide moulding composition; and (2) the molar amount of phosphorous contained in the thermoplastic polyamide moulding, composition is from about 2.1 to 4.7 times the molar amount of copper contained in the thermoplastic polyamide moulding composition.
- 2. The thermoplastic polyamide moulding composition of claim 1, wherein the at least one other halogen compound is selected from the group consisting of sodium halide and potassium halide.
- 3. The thermoplastic polyamide moulding composition of claim 2, wherein the thermoplastic polyamide moulding composition contains from about 0.01 to 0.5 weight percent of copper iodide, sodium iodide, or potassium iodide.
- 4. The thermoplastic polyamide moulding composition of claim 1, wherein the stabilizer system contains from about 0.05 to 0.11 weight percent sodium hypophosphite.
- 5. The thermoplastic polyamide moulding composition of claim 1, wherein the thermoplastic polyamide moulding composition contains from about 0.001 to 1 weight percent copper.
- 6. The thermoplastic polyamide moulding composition of claim 1, wherein the thermoplastic polyamide moulding composition contains from about 0.003 to 0.3 weight percent copper.
- 7. The thermoplastic polyamide moulding composition of claim 1, further comprising at least one additive selected from the group consisting of fillers, reinforcing agents, processing aids, flame retardants, pigments, dyes, and impact resistance modifiers.
Priority Claims (1)
Number |
Date |
Country |
Kind |
195 19 820 |
May 1995 |
DE |
|
Parent Case Info
This is a continuation of patent application Ser. No. 08/650,416, filed May 20, 1996 abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (6)
Number |
Date |
Country |
21 07 406 |
Sep 1971 |
DE |
25 16 565 |
Oct 1976 |
DE |
29 24 024 |
Dec 1979 |
DE |
0 612 794 |
Aug 1994 |
EP |
934513 |
Aug 1963 |
GB |
1140047 |
Jan 1969 |
GB |
Non-Patent Literature Citations (2)
Entry |
European Patent Search for EP 96 10 7971. |
Kunststoffhandbuch Polyamide vol. 6, pp. 238-241 (1996). |
Continuations (1)
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Number |
Date |
Country |
Parent |
08/650416 |
May 1996 |
US |
Child |
09/989347 |
|
US |