Title:
FUSED RING COMPOUND
Document Type and Number:
WIPO Patent Application WO/2001/010803
Kind Code:
A1
Abstract:
A novel compound represented by general formula (I) and a nematic liquid crystal composition containing the same. A compound represented by general formula (I) can be produced with great ease as is shown in an example and has excellent compatibility with a mother liquid crystal of general use being currently used as a nematic liquid crystal, and further shows reduced precipitation at a low temperature. Moreover, the addition of only a small amount of the above compound to the mother liquid crystal results in expanding effectively the temperature range for liquid crystallinity, without detriment to various properties as a liquid crystal material. Accordingly, the above compound is suitable for use in various liquid crystal display elements which are required to have a wide range of working temperature and is greatly useful as a liquid crystal material.
Inventors:
OGAWA SHINJI (JP)
KAWARA TATSUO (JP)
TAKEHARA SADAO (JP)
OHNISHI HIROYUKI (JP)
TAKEUCHI KIYOFUMI (JP)
TAKATSU HARUYOSHI (JP)
GRAHE GERWALD (DE)
FRINGS RAINER BRUNO (DE)
FUGGER CHRISTINE (DE)
PITHART CORNELIA (DE)
KAWARA TATSUO (JP)
TAKEHARA SADAO (JP)
OHNISHI HIROYUKI (JP)
TAKEUCHI KIYOFUMI (JP)
TAKATSU HARUYOSHI (JP)
GRAHE GERWALD (DE)
FRINGS RAINER BRUNO (DE)
FUGGER CHRISTINE (DE)
PITHART CORNELIA (DE)
Application Number:
PCT/JP1999/004917
Publication Date:
February 15, 2001
Filing Date:
September 10, 1999
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
OGAWA SHINJI (JP)
KAWARA TATSUO (JP)
TAKEHARA SADAO (JP)
OHNISHI HIROYUKI (JP)
TAKEUCHI KIYOFUMI (JP)
TAKATSU HARUYOSHI (JP)
GRAHE GERWALD (DE)
FRINGS RAINER BRUNO (DE)
FUGGER CHRISTINE (DE)
PITHART CORNELIA (DE)
OGAWA SHINJI (JP)
KAWARA TATSUO (JP)
TAKEHARA SADAO (JP)
OHNISHI HIROYUKI (JP)
TAKEUCHI KIYOFUMI (JP)
TAKATSU HARUYOSHI (JP)
GRAHE GERWALD (DE)
FRINGS RAINER BRUNO (DE)
FUGGER CHRISTINE (DE)
PITHART CORNELIA (DE)
International Classes:
C07C22/08; C07C25/18; C07C25/22; C07C25/24; C07C49/675; C07C49/697; C07C255/50; C07C255/55; C09K19/02; C09K19/32; C09K19/34; (IPC1-7): C07C13/60; C07C25/22; C07C25/24; C07C39/17; C07C43/225; C07C49/675; C07C255/50; C07C255/55; C09K19/32; C09K19/34; G02F1/13
Foreign References:
| JPH10236992A | 1998-09-08 | |||
| EP0325035A2 | 1989-07-26 | |||
| US4434073A | 1984-02-28 | |||
| JPH05262744A | 1993-10-12 | |||
| JPH05125055A | 1993-05-21 |
Other References:
KOSSMEHL G. ET AL.: "Liquid Crystalline Main Chain Polysiloxane Esters and their Monomers", MOL. CRYST. LIQ. CRYST. SCI. TECHNOL., SECT. A, vol. 269, 1995, pages 39 - 53, XP002926157
See also references of EP 1201632A4
See also references of EP 1201632A4
Attorney, Agent or Firm:
Shiga, Masatake (23-3 Takadanobaba 3-chom, Shinjuku-ku Tokyo, JP)
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