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. 31, 2009
Filed:
Oct. 07, 2005
Katherine Glasgow, Evansville, IN (US);
Brian Mullen, Mt. Vernon, IN (US);
Matthew Robert Pixton, Mt. Vernon, IN (US);
Philippe Schottland, West Chester, OH (US);
Katherine Glasgow, Evansville, IN (US);
Brian Mullen, Mt. Vernon, IN (US);
Matthew Robert Pixton, Mt. Vernon, IN (US);
Philippe Schottland, West Chester, OH (US);
SABIC Innovative Plastics IP B.V., Bergen op Zoom, NL;
Abstract
A thermoplastic composition comprises a polycarbonate, an ionizing radiation stabilizing additive, and a poly-substituted aromatic compound of formula: wherein X is an aryl group; Y is a non-hydrogen substituent group, a is 1 to 4, b is 0 to 4, a+b is less than or equal to 4, and c is 0 or 1; and wherein the amounts and identities of the polycarbonate, ionizing radiation stabilizing additive, and poly-substituted aromatic compound are selected such that a molded article having a thickness of 3.18 millimeters and comprising the thermoplastic composition has, after exposure to gamma radiation at 83 kGy and when measured according to ASTM D1925-70, an increase in yellowness index (dYI) of less than or equal to 50, when compared to the unexposed thermoplastic composition.