Invention Grant
- Patent Title: Noncrystalline form of fluorene derivative and process for preparation thereof
- Patent Title (中): 非晶形式的芴衍生物及其制备方法
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Application No.: US13376516Application Date: 2010-06-01
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Publication No.: US08436214B2Publication Date: 2013-05-07
- Inventor: Katsuhiro Fujii , Suguru Hata , Kohta Fukui
- Applicant: Katsuhiro Fujii , Suguru Hata , Kohta Fukui
- Applicant Address: JP Osaka
- Assignee: Taoka Chemcial Co., Ltd.
- Current Assignee: Taoka Chemcial Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: Renner, Otto, Boisselle & Sklar, LLP
- Priority: JP2009-139852 20090611; JP2009-150786 20090625
- International Application: PCT/JP2010/059245 WO 20100601
- International Announcement: WO2010/143556 WO 20101216
- Main IPC: C07C41/40
- IPC: C07C41/40 ; C07C43/23

Abstract:
An object of the present invention is to provide (i) a novel non-crystalline form of 9,9-bis(4-(2-hydroxyethoxy) phenyl) fluorene, which non-crystalline form maintains quality at a certain level, and is excellent as a polymer material, and (ii) a method of preparing the non-crystalline form. According to the present invention, molten 9,9-bis(4-(2-hydroxyethoxy) phenyl) fluorene in a liquid form is cooled and therefore is solidified. With the method, it is possible to provide a novel non-crystalline form of 9,9-bis(4-(2-hydroxyethoxy) phenyl) fluorene which has a small risk that powder dust of 9,9-bis(4-(2-hydroxyethoxy) phenyl) fluorine might cause explosion or a health problem. Further, the non-crystalline form of 9,9-bis(4-(2-hydroxyethoxy) phenyl) fluorene can be adjusted arbitrarily in particle diameter by, for example, pulverizing the non-crystalline form in accordance with equipment or usage. In other words, the non-crystalline form of 9,9-bis(4-(2-hydroxyethoxy) phenyl) fluorene is advantageous in handleability industrially.
Public/Granted literature
- US20120095270A1 NONCRYSTALLINE FORM OF FLUORENE DERIVATIVE AND PROCESS FOR PREPARATION THEREOF Public/Granted day:2012-04-19
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