Invention Grant
- Patent Title: 2,9-dichloroquinacridone in platelet form
- Patent Title (中): 2,9-二氯喹吖啶酮血小板形式
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Application No.: US12513422Application Date: 2007-10-30
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Publication No.: US08017778B2Publication Date: 2011-09-13
- Inventor: Marc Maurer , Niklaus Raetzo , Paolo Balliello
- Applicant: Marc Maurer , Niklaus Raetzo , Paolo Balliello
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agent Qi Zhuo
- Priority: EP06123789 20061109
- International Application: PCT/EP2007/061657 WO 20071030
- International Announcement: WO2008/055807 WO 20080515
- Main IPC: C09B48/00
- IPC: C09B48/00 ; C07D471/02
Abstract:
The present invention is directed to a new 2,9-dichloroquinacridone in platelet form, a process for its preparation and its use for coloring high molecular weight organic material. The 2,9-dichloroquinacridone in platelet form has a length of 1 to 45 μm, a width of 0.1 to 20 μm and an average thickness of 0.01 to 5 μm and is characterized in that the hue-value h in remission is ≦31 and/or the lightness L* in transmission is ≧20 and/or a decreasing b* value and an increasing a* value from an illuminating and viewing angle (aspecular angle) 45°/110° (+25°) to 45°/90° (+45°).
Public/Granted literature
- US20100099877A1 NEW 2,9-DICHLOROQUINACRIDONE IN PLATELET FORM Public/Granted day:2010-04-22
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