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:
Apr. 29, 2025
Filed:
Sep. 04, 2020
Sabic Global Technologies B.v., Bergen op Zoom, NL;
Tamara Marijke Eggenhuisen, Raamsdonksveer, NL;
Shigeru Haba, Tochigi, JP;
Eduardus Ludovicus Louisa Broekaart, Nieuw-Namen, NL;
Sijun Li, Shanghai, CN;
SABIC GLOBAL TECHNOLOGIES B.V., Bergen Op Zoom, NL;
Abstract
The present invention relates a polycarbonate composition comprising polycarbonate, acid stabiliser and at least one anthraquinone based colorant having at least one hydroxyl group, wherein the composition has a transmission of at least 80% in an infrared light wavelength range of from 760-1120 nm, wherein transmission is determined on an injection moulded plaque having a thickness of 2 mm prepared by injection moulding the composition at a maximum temperature of 320° C. and at a residence time of 10 minutes. Preferably the composition has a transmission of at most 10% in the visible light wavelength range of from 380-740 nm.