Title:
９，９－ビス［４－（２－ヒドロキシエトキシ）－３－フェニルフェニル］フルオレンの多形体及びその製造方法
Document Type and Number:
Japanese Patent JP7274257
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a novel crystal polymorph of 9,9-bis[4-(2-hydroxyethoxy)-3-phenyl phenyl]fluorene excellent in heat stability; and to provide a production method thereof.SOLUTION: Crystallization of 9,9-bis[4-(2-hydroxyethoxy)-3-phenyl phenyl]fluorene is carried out from a mixed solvent of water-soluble ketone and water-soluble alcohol, to thereby obtain a crystal polymorph A having each diffraction peak at each diffraction angle 2θ=7.1±0.2°, 14.3±0.2°, 17.0±0.2°, 22.3±0.2° in a powder X-ray diffraction pattern. When the crystal polymorph A is melted and cooled, an amorphous body is acquired.SELECTED DRAWING: Figure 5
Inventors:
Eri Kawaguchi
Yutaro Nishiyama
Kazuyuki Ogata
Yuji Kuratani
Shinsuke Miyauchi
Yutaro Nishiyama
Kazuyuki Ogata
Yuji Kuratani
Shinsuke Miyauchi
Application Number:
JP2016023042A
Publication Date:
May 16, 2023
Filing Date:
February 09, 2016
Export Citation:
Assignee:
Osaka Gas Chemicals Co., Ltd.
International Classes:
C07C43/23; C07C41/40
Domestic Patent References:
| JP2017200900A | ||||
| JP2001206863A | ||||
| JP1045655A | ||||
| JP201598458A | ||||
| JP202191743A |
Foreign References:
| WO2010143556A1 | ||||
| WO2011016357A1 |
Other References:
Netsu Sokutei、1988年、15(3)、pp.143-145
Attorney, Agent or Firm:
Hiroshi Sakanaka
Mitsuo Kuwata
Mitsuo Kuwata