Inherently light- and heat-stabilized polyamides with improved wet fastness

US6812323B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Ulrike Breiner · Wiesbaden, DE
• Manfred Julius · Schifferstadt, DE
• Rainer Neuberg · Schifferstadt, DE
• Robert A. Weiss · Summit, US
• Axel Wilms · Bad Dürkheim, DE
• Harry Hu · Arden, US

Key dates

• Filing date: Sep 14, 2000
• Grant date: Nov 2, 2004
• Expiry date: Sep 14, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G69/48
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for preparing polyamides comprises polymerizing starting monomers or starting oligomers in the presence of at least one compound of the formula (I) whereR is a functional group R8 which bears 1-4 identical or different amide-forming groups R7,R1 is H, C1-C20-alkyl, cycloalkyl, benzyl or OR6, where R6 is H, C1-C20-alkyl, cycloalkyl or benzyl,R2, R3, R4 and R5 are independently C1-C10-alkyl,n is a natural number greater than 1, andthe piperidine derivatives attached to R are identical or different with regard to the substituents, meaning R1, R2, R3, R4 and R5.The polyamides are useful for preparing filaments, fibers, films, sheetlike structures and moldings.