Molding composition with good capability for blow molding

US6677015B2 · kind B2 · utility

Assignee

• Degussa AG · DE

Inventors

• Martin Himmelmann · Haltern, DE
• Wilfried Bartz · Marl, DE
• Franz-Erich Baumann · Schneverdingen, DE
• Guido Schmitz · Schneverdingen, DE
• Georg Oenbrink · Schneverdingen, DE
• Harald Haeger · Thedinghausen, DE
• Ralf Richter · Dresden, DE

Key dates

• Filing date: Dec 19, 2001
• Grant date: Jan 13, 2004
• Expiry date: Dec 19, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31732
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A molding composition of at least 50% by weight of a polyamine-polyamide copolymer obtained from 0.05 to 2.5% by weight of a polyamine having at least 4 nitrogen atoms and having a viscosity of at least 5 000 Pa•s at 250° C. and at a shear rate of 0.1 l/s, and having a viscosity ratio of at least 7 at 250° C., when the melt viscosities at shear rates of 0.1 l/s and 100 l/s are compared with one another, has high melt stiffness and is easy to cut, and performs well in blow molding.