The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 28, 2008
Filed:
Apr. 10, 2006
Frank Buckel, Krefeld, DE;
Gunther Stollwerck, Krefeld, DE;
Robert Maleika, Dusseldorf, DE;
Bayer MaterialScience AG, Leverkusen, DE;
Abstract
A multi-layered product in the form of sheet, film or a three dimensional molded article is disclosed. The product comprised a first layer (A) having a thickness of 1 μm to 2 mm containing polyalkyl (meth)acrylate and 0.01 to 20 percent relative to the weight of said first layer of a UV stabilizer and a second layer (B) that contains polycarbonate. The stabilizer conforms to formula (I) wherein X denotes OR; OCHCHOR; OCHCH(OH)CHORor OCH(R)COOR, Ris branched or unbranched C-Calkyl, C-Calkenyl, C-Caryl or —CO—C-Calkyl, Ris H or branched or unbranched C-Calkyl, and Ris C-Calkyl; C-Calkenyl or C-Ccycloalky. The product is characterized by its optical transparency and resistance to yellowing and is most suitable for glazing applications.