Invention Grant
- Patent Title: Polycarbonate with reduced color
- Patent Title (中): 聚碳酸酯减少颜色
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Application No.: US11688551Application Date: 2007-03-20
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Publication No.: US07645851B2Publication Date: 2010-01-12
- Inventor: Sjef Berndsen , Hans Peter Brack , Bernd Jansen , Edward Kung , Daniel Lowery , Patrick Joseph McCloskey , Dennis Karlik , Gerardo Hidalgo Llinas
- Applicant: Sjef Berndsen , Hans Peter Brack , Bernd Jansen , Edward Kung , Daniel Lowery , Patrick Joseph McCloskey , Dennis Karlik , Gerardo Hidalgo Llinas
- 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: C08G64/00
- IPC: C08G64/00 ; C08G63/18

Abstract:
A method of making polycarbonate includes the steps of forming polycarbonate by a melt transesterification method using an activated diaryl carbonate, and compounding the polycarbonate with a phosphorus-containing compound that has an abstractable proton or hydrolyzable group. The phosphorus-containing compound is compounded with the polycarbonate in an amount sufficient to result in an improvement in the color properties of the polycarbonate as compared to pellets formed from the same polycarbonate without addition of the phosphorus-containing compound.
Public/Granted literature
- US20080004379A1 Polycarbonate with Reduced Color Public/Granted day:2008-01-03
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