CHOLESTERIC LIQUID CRYSTAL MATERIAL COMPRISING OPTICALLY ACTIVE HOMO- OR COPOLYMER POLYSILANES HAVING OPTICALLY ACTIVE ALKYL GROUP HAVING BRANCHED STRUCTURE AT β- POSITION AND IN RIGID ROD-LIKE HELICAL STRUCTURE

Title:

Document Type and Number:

Japanese Patent JP3726229

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To obtain a cholesteric liquid crystal comprising an optically active organic silicon high-molecular polymer.
SOLUTION: This cholesteric liquid crystal comprises the optically active organic silicon high-molecular polymer represented by a structural formula of the formula 1 [wherein, R1 and R2 are each same or different 2-22C alkyl or an aralkyl having a phenyl at the terminus of a 2-22C alkyl; R3 is a chiral alkyl having a branched structure at the β-position; R* is a chiral alkyl having a branched structure at the β-position in (S)-type and/or (R)-type, with the proviso that when the (S) and the (R) coexist, the content of either one is at least 1% more than that of the other; and m is ≥0, (n+m) is 10-50,000 and n/(n+m) is ≥0.01], and having a rigid rod-like helical structure.

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Inventors:

Watanabe sequentially
Michiya Fujiki
Hiroyuki Kamee

Application Number:

JP35203099A

Publication Date:

December 14, 2005

Filing Date:

December 10, 1999

Export Citation:

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Assignee:

Japan Science and Technology Agency
Nippon Telegraph and Telephone Corporation

International Classes:

C09K19/40; C08G77/60; G02F1/13; (IPC1-7): C09K19/40; C08G77/60; G02F1/13

Domestic Patent References:

JP9040783A
JP8225562A

Foreign References:

WO1999011733A1

Attorney, Agent or Firm:

Harumi Miyamoto

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