Patent · US Expired

Stable adhesive composite material made of polyurethane and of another thermoplastic material, a process for its production and a method for its use in motor vehicles

US6428895B1 · kind B1 · utility

6Cited by

4References

8Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Karsten Reihs · Cologne, DE
Werner Rasshofer · Kürten, DE
Holger Warth · Sha Tin, CN
Dirk Wegener · Bielefeld, DE
Manfred Schmidt · Krefeld, DE
Peter Heitkamper · Dormagen, DE

Key dates

Filing date	Jul 31, 2001
Grant date	Aug 6, 2002
Priority date	—
Expiry date	Jul 31, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31739
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The present invention relates to composite materials made of at least one composite layer of a polyurethane and of a second composite layer which is directly bonded to the first layer and which consists of a thermoplastic material that is different from the polyurethane of layer A). The polyurethane material of layer A) is characterized by a residual content of free reaction components containing ether groups of no more than 400 ppm, and preferably of no more than 100 ppm. The invention also relates to a process for the production of these composite materials and to a method of their use as materials in motor vehicles.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.