Patent · US Expired

Methacrylate protective coating containing a UV-absorber for polycarbonate

US5061558A · kind A · utility

44Cited by

2References

15Claims

0Family size

Assignee

Rohm GmbH Chemische Fabrik · DE

Inventors

Jens-Dieter Fischer · Darmstadt, DE
Manfred Munzer · Bensheim, DE
Ursula Golchert · Dieburg, DE
Felix Schinzel · Darmstadt, DE

Key dates

Filing date	Nov 6, 1989
Grant date	Oct 29, 1991
Priority date	—
Expiry date	Nov 6, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31736
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

Multilayered plastic objects are prepared having a core layer of an aromatic polycarbonate in contact with a polymethacrylate film containing a UV absorber. The polymethacrylate film comprises a copolymer of methylmethacrylate and an acrylic or methacrylic ester, (meth)acrylamide, maleimide or mixtures thereof and is compatible with said aromatic polycarbonate at all mixing ratios.

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