Patent · US Expired

Coextruded double walled sheet of linear polycarbonate resin

US5108835A · kind A · utility

42Cited by

3References

6Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Heinrich Hähnsen · Duisburg, DE
Wolfgang Nising · Sankt Augustin, DE
Thomas Scholl · New Haven, US
Hans-Josef Buysch · Krefeld, DE
Ulrich Grigo · New Martinsville, US

Key dates

Filing date	Apr 18, 1991
Grant date	Apr 28, 1992
Priority date	—
Expiry date	Apr 18, 2011

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/277
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The invention relates to a process for coating moldings via co-extrusion with a UV-absorber-containing layer containing special dimeric UV absorbers and to the moldings coated with a corresponding layer.

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