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:
Feb. 12, 2019
Filed:
Aug. 01, 2016
Sabic Global Technologies B.v., Bergen op Zoom, NL;
Daniel Francis Lowery, Mount Vernon, IN (US);
Kelly Leung, Evansville, IN (US);
SABIC GLOBAL TECHNOLOGIES B.V., Bergen Op Zoom, NL;
Abstract
A thermoplastic composition is described herein including a first polyetherimide sulfone having a glass transition temperature of 250 to 290° C., and a second polyetherimide sulfone having a glass transition temperature of 230 to 249° C. The composition has an advantageous combination of optical properties including improved yellowness index, transmission, and haze. A method of manufacturing the thermoplastic composition and articles including the thermoplastic composition are also described. A method for improving the optical properties of a thermoplastic composition is also disclosed, where the method includes melt mixing the first and second polyetherimide sulfones, each having a glass transition temperature as defined herein. The method provides a composition having at least one of improved yellowness, haze, and transmission.