Invention Grant
- Patent Title: Method of making isosorbide polycarbonate
- Patent Title (中): 制备异山梨醇聚碳酸酯的方法
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Application No.: US12238683Application Date: 2008-09-26
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Publication No.: US07863404B2Publication Date: 2011-01-04
- Inventor: Hans-Peter Brack , Marianne Guyader , Han Vermeulen , Dennis James Patrick Maria Willemse
- Applicant: Hans-Peter Brack , Marianne Guyader , Han Vermeulen , Dennis James Patrick Maria Willemse
- Applicant Address: NL Bergen op Zoom
- Assignee: Sabic Innovative Plastics IP B.V.
- Current Assignee: Sabic Innovative Plastics IP B.V.
- Current Assignee Address: NL Bergen op Zoom
- Agency: Larson & Anderson, LLC
- Main IPC: C08G63/02
- IPC: C08G63/02 ; C08G64/00

Abstract:
A polycarbonate is provided that contains repeat units derived from isosorbide and a residue derived from an activated diaryl carbonate. The polycarbonate has 1H-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 a 1H-NMR peak associated with the color bodies. The maximum allowable amount of color bodies are present when the integrated area of the 1H-NMR peak associated with the color bodies divided by the integrated areas of the 1H-NMR peaks associated with the repeat units derived from isosorbide is 0.025.
Public/Granted literature
- US20100081784A1 METHOD OF MAKING ISOSORBIDE POLYCARBONATE Public/Granted day:2010-04-01
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