Method of producing elastic foams having a base of polyurethane by microwave foaming

US5118722A · kind A · utility

Assignee

• Illbruck GmbH · DE

Inventors

• Klaus Wollmann
• Alexander Ach · Frankfurt am Main, DE
• Werner Frank · Bensberg, DE

Key dates

• Filing date: Nov 27, 1989
• Grant date: Jun 2, 1992
• Expiry date: Nov 27, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2475/00
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A method of producing elastic foam having a base of polyurethane, in particular for use in the field of automobiles for sound damping. Allows production of foam parts directly in a desired shape in as few operations as possible. The foam is formed from a mixture of at least one polyurethane precondensate, at least on melamine precondensate and further additives for the foaming.