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:
Jan. 04, 2011
Filed:
Sep. 26, 2008
Hans-peter Brack, Herrliberg, CH;
Marianne Guyader, Six-Fours-les-Plages, FR;
Han Vermeulen, Hoeven, NL;
Dennis James Patrick Maria Willemse, Standdaarbuiten, NL;
Hans-Peter Brack, Herrliberg, CH;
Marianne Guyader, Six-Fours-les-Plages, FR;
Han Vermeulen, Hoeven, NL;
Dennis James Patrick Maria Willemse, Standdaarbuiten, NL;
Sabic Innovative Plastics IP B.V., Bergen op Zoom, NL;
Abstract
A polycarbonate is provided that contains repeat units derived from isosorbide and a residue derived from an activated diaryl carbonate. The polycarbonate hasH-NMR peaks associated with the repeat units derived from isosorbide. The polycarbonate contains no more than a maximum allowable amount of sorbitol-derived color bodies. If these color bodies are present in the polycarbonate it has aH-NMR peak associated with the color bodies. The maximum allowable amount of color bodies are present when the integrated area of theH-NMR peak associated with the color bodies divided by the integrated areas of theH-NMR peaks associated with the repeat units derived from isosorbide is 0.025.