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:
Jun. 20, 2023
Filed:
Apr. 12, 2019
Applicant:
Covestro Intellectual Property Gmbh & Co. KG, Leverkusen, DE;
Inventors:
Assignee:
Covestro Intellectual Property GmbH & Co. KG, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61L 2/08 (2006.01); C08L 69/00 (2006.01); C08L 71/02 (2006.01); C08K 5/372 (2006.01); A61L 29/06 (2006.01); A61L 29/14 (2006.01);
U.S. Cl.
CPC ...
C08L 69/00 (2013.01); A61L 2/087 (2013.01); A61L 29/06 (2013.01); A61L 29/14 (2013.01); C08K 5/372 (2013.01); C08L 71/02 (2013.01); A61L 2202/181 (2013.01); A61L 2202/24 (2013.01); C08L 2201/08 (2013.01);
Abstract
The invention relates to a thermoplastic composition comprising A) aromatic polycarbonate, B) 0.1 to 5 wt.-% one or more polyether polyols and C) 0.01 to 0.30 wt.-% 3,3'-thiodipropionic acid. The invention also relates to medical technology products or parts of medical technology products consisting of such compositions as well as to a process for sterilization of such moulded parts by means of irradiation. The polycarbonate compositions according to the invention show significantly less yellowing after irradiation than known compositions and still have good mechanical properties.