Multilayer composite

US6355358B1 · kind B1 · utility

Assignee

• Degussa AG · DE

Inventors

• Michael Boer · Johannesweg, DE
• Guido Schmitz · Schneverdingen, DE
• Georg Oenbrink · Schneverdingen, DE
• Harald Häger · Marienheide, DE
• Ralf Richter · Dresden, DE

Key dates

• Filing date: Jun 29, 2000
• Grant date: Mar 12, 2002
• Expiry date: Jun 29, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31786
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A thermoplastic multilayer composite, and articles made therefrom, which has at least one layer I of a thermoplastic molding composition, at least one layer II of a further thermoplastic molding composition, bonded together with at least one layer of an adhesion promoter disposed between at least one layer I and at least one layer II. The adhesion promoter is at least 5% by weight of a graft copolymer prepared from 0.5 to 25% by weight, based on the total amount of graft copolymer, of a polyamine having at least 4 nitrogen atoms and having a number average molecular weight Mn of at least 146 g/mol, and polyamide-forming monomers selected from lactams, &ohgr;-aminocarboxylic acids, equimolar mixtures of diamines and dicarboxylic acids, and their mixtures.