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:
Nov. 01, 2022
Filed:
Apr. 25, 2018
Applicant:
Covestro Deutschland Ag, Leverkusen, DE;
Inventors:
Derk Erich Wandner, Odenthal, DE;
Ingmar Hermsdorfer, Krefeld, DE;
Christopher Schirwitz, Leverkusen, DE;
Assignee:
COVESTRO DEUTSCHLAND AG, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 69/00 (2006.01); C08L 23/26 (2006.01); C08K 3/34 (2006.01); C08K 5/13 (2006.01); C08K 5/524 (2006.01); C08K 5/50 (2006.01); C08K 3/22 (2006.01);
U.S. Cl.
CPC ...
C08L 69/00 (2013.01); C08K 3/34 (2013.01); C08K 5/13 (2013.01); C08K 5/50 (2013.01); C08K 5/524 (2013.01); C08L 23/26 (2013.01); C08K 2003/2241 (2013.01);
Abstract
The invention relates to compositions based on aromatic polycarbonate comprising metal oxide-coated micas as effect pigment, which do not have any significant increase in molecular weight of the polycarbonate, as can be seen from the MVR, under thermal stress. This is achieved by the addition of small amounts of an anhydride-modified α-olefin polymer, optionally in combination with phosphorus-containing thermal stabilizer.