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:
Aug. 06, 2019
Filed:
Apr. 28, 2017
Sabic Global Technologies B.v., Bergen Op Zoom, NL;
Tony Farrell, Bergen Op Zoom, NL;
Paul Dean Sybert, Evansville, IN (US);
James Alan Mahood, Evansville, IN (US);
SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom, NL;
Abstract
A poly(ester-carbonate) copolymer comprises carbonate units of the formula (I); and ester units of the formula (II) wherein: T is a Calkylene, a Ccycloalkylene, or a Carylene; and Rand J are each independently (a) a bisphenol A divalent group and (b) a Cor higher divalent group (b), wherein the Cor higher divalent group is present in an amount of 40 to 50 mol %; the ester units are present in an amount of 40 to 60 mol %; the poly(ester-carbonate) copolymer has a weight average molecular weight of 18,000 to 24,000 Daltons; and a sample of the composition has a glass transition temperature of 210° C. to 235° C. as determined by differential scanning calorimetry (DSC) as per ASTM D3418 with a 20° C./min heating rate; and a melt viscosity of less than 1050 Pa-s at 644 sec-1 and 350° C., determined according to ISO 11443.