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:
Sep. 15, 2009
Filed:
Dec. 20, 2005
Alexander Meyer, Düsseldorf, DE;
Wilfried Haese, Odenthal, DE;
Stephan Konrad, Dormagen, DE;
Claus-ludolf Schultz, Krefeld, DE;
Alexander Meyer, Düsseldorf, DE;
Wilfried Haese, Odenthal, DE;
Stephan Konrad, Dormagen, DE;
Claus-Ludolf Schultz, Krefeld, DE;
Bayer Material Science AG, , DE;
Abstract
Polycarbonate resin containing small amounts of carbamate compounds is disclosed. The resin that contains at least one of compounds conforming to whereinRand Rindependently of one another denote hydrogen or C-C-alkyl, or together denote C-C-alkylidene, Rand Rindependently of one another represent hydrogen, C-C-alkyl, or phenyl, or together with the carbon atom to which they are bonded form cyclohexyl or trimethylcyclohexyl, and Rdenotes hydrogen, C-C-alkyl, C-C-cycloalkyl, phenyl or cumyl, are characterized by their low electrostatic field and therefore suitable for making optical storage media.