Patent · US Expired

Thermally stable, weather-resistant polyamide moulding compositions

US6737462B2 · kind B2 · utility

3Cited by

7References

7Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Andreas Gittinger · Krefeld, DE
Aziz El-Sayed · Leverkusen, DE
Edgar Ostlinning · Goldkronach, DE
Ralf Lange · Krefeld, DE

Key dates

Filing date	Nov 20, 2001
Grant date	May 18, 2004
Priority date	—
Expiry date	Apr 27, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K3/16
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to thermally stable, weather-resistant polyamide moulding compositions containing as stabiliser, a mixture of a copper halide, one or more halogen compounds and hypophosphorous acid or an alkali metal or alkaline earth metal salt of this acid, wherein the individual components of the stabiliser mixture are added in an amount such that the molar amount of halogen contained in the moulding composition is greater than or equal to six times the molar amount of and less than or equal to fifteen times the molar amount of copper contained in the moulding composition and the molar amount of phosphorus is greater than or equal to the molar amount of and less than or equal to ten times the molar amount of copper contained in the moulding composition.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.