Interior noise reduction in motor vehicles

US4663381A · kind A · utility

Assignee

• Dr. Alois Stankiewicz GmbH · DE

Inventors

• Ehrenfried Blumel · Celle, DE
• Heinemann Gahlau · Celle, DE
• Manfred Hoffmann · Würzburg, DE
• Klaus Wittenmayer · Uetze, DE
• Thomas Stankiewicz · Celle, DE
• Christoph Kittel · Bad Doberan, DE

Key dates

• Filing date: Nov 27, 1984
• Grant date: May 5, 1987
• Expiry date: Nov 27, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L25/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Viscoelastic plastics materials having a dynamic elasticity modulus of 10.sup.7 to 10.sup.10 Nm.sup.-2 and a loss factor of at least 5 are used for the manufacture of motor vehicle parts, such as wheel housing parts, instrument panels, and door panels, in order to reduce interior noise.