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:
Mar. 12, 2013
Filed:
Dec. 20, 2010
Frank Doebert, Shanghai, CN;
Andreas Stremmel, Willich, DE;
Christoph Biedron, Moers, DE;
Stephan Laue, Antwerpen, BE;
Johann Rechner, Kerpen, DE;
Torsten Hagen, Essen, DE;
Frank Bruynseels, Sint Gillis, BE;
Frank Quaeyhaegens, Schoten, BE;
Johan Decloedt, Hulst, NL;
Paul Van Dorst, Merksplas, BE;
Uwe Arndt, Ekeren, BE;
Johan Vanden Eynde, Zwijnaarde, BE;
Ursula Tracht, Leverkusen, DE;
Thomas König, Leverkusen, DE;
Ulrich Liesenfelder, Bergisch Gladbach, DE;
Frank Doebert, Shanghai, CN;
Andreas Stremmel, Willich, DE;
Christoph Biedron, Moers, DE;
Stephan Laue, Antwerpen, BE;
Johann Rechner, Kerpen, DE;
Torsten Hagen, Essen, DE;
Frank Bruynseels, Sint Gillis, BE;
Frank Quaeyhaegens, Schoten, BE;
Johan Decloedt, Hulst, NL;
Paul Van Dorst, Merksplas, BE;
Uwe Arndt, Ekeren, BE;
Johan Vanden Eynde, Zwijnaarde, BE;
Ursula Tracht, Leverkusen, DE;
Thomas König, Leverkusen, DE;
Ulrich Liesenfelder, Bergisch Gladbach, DE;
Bayer MaterialScience AG, , DE;
Abstract
The invention relates to a process for the pretreatment of material surfaces in order to minimize the interaction between polycarbonate and metal and, in the processing and synthesis of polycarbonate, to obtain a high-quality polymer which in particular does not become discolored and is free of insoluble constituents.