Patent · US Expired

Process for preparing multilayer plastic composites of incompatible plastics

US6280671A · kind A · utility

5Cited by

8References

5Claims

0Family size

Assignee

Roehm GmbH Chemische Fabrik · DE

Inventors

Volker Benz · Kelsterbach, DE
Hans Lorenz · Darmstadt, DE
Michael Meier-Kaiser · Pfungstadt, DE
Michael Mueller · Bensheim, DE
Klaus-Ernst Poehlmann · Darmstadt, DE

Key dates

Filing date	Mar 1, 1995
Grant date	Aug 28, 2001
Priority date	—
Expiry date	Mar 1, 2015

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24942
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

Multilayer plastic composites containing at least two incompatible plastics, A and B, in which the layering sequence alternates between A and B, the layers of plastic B are discontinued at regular intervals, and the resulting gaps in the layers are filled in with plastic A, exhibit good adhesion between the layers. In preferred embodiments of the invention, the amorphous, crystalline, or semi-crystalline plastic B has a higher coefficient of thermal expansion than the amorphous plastic A. The plastic composite is preferably produced via coextrusion.

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