Title:
METHOD OF PURIFYING LIQUID CRYSTAL COMPOUND
Document Type and Number:
Japanese Patent JPH08193193
Kind Code:
A
Abstract:
PURPOSE: To remove impurities, especially ionic impurities, from a liquid crystal compound by bringing the compound into contact with water under heating.
CONSTITUTION: A liquid crystal compound is brought into contact with water by mixing them under agitation and heating. The heating temperature is about 50-180°C, desirably 60-120°C, more desirably the temperature at which the mixture boils. Although not particularly limited, the agitation and heating time is desirably 1-3hr. It is necessary that the water used is ultrapure. It is desirable that the liquid crystal compound has a silacyclohexane ring.
Inventors:
KANEKO TATSUSHI
SHIMIZU TAKAAKI
OGIWARA TSUTOMU
KANO TAKESHI
SHIMIZU TAKAAKI
OGIWARA TSUTOMU
KANO TAKESHI
Application Number:
JP2228595A
Publication Date:
July 30, 1996
Filing Date:
January 17, 1995
Export Citation:
Assignee:
SHINETSU CHEMICAL CO
International Classes:
C07B63/00; C07F7/08; C07F7/12; C09K19/40; G02F1/13; (IPC1-7): C09K19/40; C07F7/08; C07F7/12; G02F1/13
Attorney, Agent or Firm:
High Toshihiko No (1 person outside)
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