Polyamide-based products

US12398258B2 · kind B2 · utility

Assignee

• ENVALIOR DEUTSCHLAND GMBH · DE

Inventors

• Elisabeth Gau · Dormagen, DE
• Jan Caudal · Pulheim, DE
• Marc Rudolf · Cologne, DE
• Detlev Joachimi · Krefeld, DE
• Jochen Endtner · Cologne, DE
• Leif Arne Koerte · Minden, DE
• Matthias Bienmuller · Krefeld, DE

Key dates

• Filing date: Nov 7, 2022
• Grant date: Aug 26, 2025
• Expiry date: Nov 7, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/526
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Compositions and products formed thereof are based on glass fiber-reinforced polyamide admixed with at least one secondary aromatic amine, at least one phosphinic acid derivative and bis(2,4-di-t-butylphenyl)pentaerythritol diphosphate in amounts to improve ageing behavior in the form of improved preservation of the elongation at break and impact toughness, improved color preservation or improved color stability, and simultaneously improved UV stability after thermal ageing by comparison with products based on glass fiber-reinforced polyamide with such a mixture.