Patent · US Active

Weather-resistant multilayer systems

US8697227B2 · kind B2 · utility

0Cited by

9References

9Claims

0Family size

Assignee

Bayer MaterialScience AG · DE

Inventors

Birgit Meyer Zu Berstenhorst · Moers, DE
Gunther Stollwerck · Krefeld, DE
Frank Buckel · Krefeld, DE
Heinz Pudleiner · Krefeld, DE

Key dates

Filing date	May 4, 2010
Grant date	Apr 15, 2014
Priority date	—
Expiry date	Jun 16, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31855
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The invention relates to a multilayer product comprising a first layer (A), a second layer (B), a third layer (C), and a fourth layer (D). The first layer (A) is a scratch-resistant protective layer having a minimum extinction of 0.3 at 340 nm, the second layer (B) is an alkyl acrylate layer having a minimum extinction of 2 at 340 nm, and the third layer (C) and the fourth layer (D) contain a UV-stabilized polycarbonate. The invention also relates to a method for manufacturing the multilayer product.

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