Invention Grant
- Patent Title: Substrate material for high speed optical discs
- Patent Title (中): 高速光盘用基材
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Application No.: US13142097Application Date: 2009-12-12
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Publication No.: US08436128B2Publication Date: 2013-05-07
- Inventor: Friedrich-Karl Bruder , Wilfried Haese , Rafael Oser , Ulrich Blaschke , Raymond Wong , Ice Zhang , Jörg Wehrle , Michael Roppel
- Applicant: Friedrich-Karl Bruder , Wilfried Haese , Rafael Oser , Ulrich Blaschke , Raymond Wong , Ice Zhang , Jörg Wehrle , Michael Roppel
- Applicant Address: DE
- Assignee: Bayer Intellectual Property GmbH
- Current Assignee: Bayer Intellectual Property GmbH
- Current Assignee Address: DE
- Agency: Novak Druce Connolly Bove + Quigg LLP
- Priority: WOPCT/CN2008/002083 20081225
- International Application: PCT/EP2009/008903 WO 20091212
- International Announcement: WO2010/072344 WO 20100701
- Main IPC: C08G64/00
- IPC: C08G64/00 ; C08G63/02
Abstract:
This invention relates to the use of polycarbonate for the production of an optical recording medium in which secure high speed operation, a transcriptability of the pit/groove structure of >85% and sufficient disc flatness can be achieved and the polycarbonate is based on bisphenol A and the polycarbonate contains a release agent in an amount less than 2000 ppm.
Public/Granted literature
- US20120065354A1 SUBSTRATE MATERIAL FOR HIGH SPEED OPTICAL DISCS Public/Granted day:2012-03-15
Information query
