Title:
DAST TWIN CRYSTAL, PROCESS FOR PRODUCING THE SAME AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2005/071145
Kind Code:
A1
Abstract:
Novel crystal of 4-dimethylamino-4-stilbazolium tosylate (DAST) useful as an electro-optical element. DAST with a size effective for use as an electro-optical element could be provided by a twin crystal of DAST. The twin crystal of DAST could be obtained according to the seed crystallization method or slant crystal growing method.
Inventors:
IZUMI ATSUSHI (JP)
OCHIAI YUTA (JP)
UMEGAKI SHINSUKE (JP)
IWAMURA TOMO (JP)
SUZUKI MAKOTO (JP)
SAKURAI HIDETAKA (JP)
YAMAGUCHI SHINJI (JP)
OCHIAI YUTA (JP)
UMEGAKI SHINSUKE (JP)
IWAMURA TOMO (JP)
SUZUKI MAKOTO (JP)
SAKURAI HIDETAKA (JP)
YAMAGUCHI SHINJI (JP)
Application Number:
PCT/JP2005/000511
Publication Date:
August 04, 2005
Filing Date:
January 18, 2005
Export Citation:
Assignee:
DAIICHI PURE CHEMICALS CO LTD (JP)
DAIICHI SEIYAKU CO (JP)
IZUMI ATSUSHI (JP)
OCHIAI YUTA (JP)
UMEGAKI SHINSUKE (JP)
IWAMURA TOMO (JP)
SUZUKI MAKOTO (JP)
SAKURAI HIDETAKA (JP)
YAMAGUCHI SHINJI (JP)
DAIICHI SEIYAKU CO (JP)
IZUMI ATSUSHI (JP)
OCHIAI YUTA (JP)
UMEGAKI SHINSUKE (JP)
IWAMURA TOMO (JP)
SUZUKI MAKOTO (JP)
SAKURAI HIDETAKA (JP)
YAMAGUCHI SHINJI (JP)
International Classes:
B01D9/00; C07D213/38; C30B29/54; G02F1/361; (IPC1-7): C30B29/54; C07D213/38; B01D9/02; G02F1/13
Domestic Patent References:
| WO1996037639A2 | 1996-11-28 |
Foreign References:
| JP3007972B1 | 2000-02-14 | |||
| JP2001247400A | 2001-09-11 | |||
| JP2002029899A | 2002-01-29 |
Attorney, Agent or Firm:
Fujino, Seiya (Toranomon 2-chome Minato-ku, Tokyo 01, JP)
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