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公开(公告)号:EP1689746B1
公开(公告)日:2019-01-09
申请号:EP04811266.8
申请日:2004-11-12
申请人: BASF SE
IPC分类号: C07D471/00 , C07D491/00 , C07D498/00 , C07D513/00 , C07D515/00 , C08K3/20 , C08K5/34 , C08K5/48 , C08K9/00 , C08L25/00 , C09B67/22 , C09B67/04 , C09B67/52
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公开(公告)号:EP3492530A1
公开(公告)日:2019-06-05
申请号:EP18212624.3
申请日:2004-11-12
申请人: BASF SE
IPC分类号: C09B67/00 , C09B67/46 , C09B67/04 , C09B67/22 , C09B67/52 , C07D471/04 , C09D11/037 , C09D17/00 , C09D7/41 , C08K5/00
摘要: The present invention is directed to a process of reducing the particle size of a crude beta- or gamma-quinacridone pigment in a crystal phase, while maintaining the crystal phase, comprising the steps of: combining a milling composition comprising 2,9-dichloroquinacridone with the crude quinacridone pigment and optionally 4,11-dichloroquinacridone, and milling to reduce the particle size of said pigment.
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