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EP0228703A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Ferroelectric liquid crystal polymer

Assignee: Idemitsu Kosan Co Ltd
•
Filing: 1986-12-23
•
Granted: —
•
Expires: 2006-12-23
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Abstract

Abstract A ferroelectric liquid crystal polymer comprising the recurring units represented by the following general formula; in which k is an integer of from 1 to 30, R 2 is -COOR 3 , -OCOR 3 , -OR 3 , or -R 3 , in which R 3 is R 4 is -CH 3 or Cl, m is 0 or an integer of from 1 to 10, n is 0 or an integer of from 1 to 10, provided that n is not 0, when R 4 is -CH 3 . The ferroelectric liquid crystal polymer of the present invention not only exhibits a ferroelectricity even at temperatures in the vicinity of a room temperature, but also has so fast response speed to the external factors as to be able to display motion pictures, and may be advantageously used as display elements for large size screens and a curved screens.

Inventors

  • 👤 Shunji Uchida
  • 👤 Kazuharu Morita
  • 👤 Kenji Hashimoto

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 16:31
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/30; C09; C09K; C09K19/00; C09K19/04; C09K19/38; C09K19/3833; C09K19/3842; C09K19/3852; C09K19/3857; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/133365

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 92 words
A ferroelectric liquid crystal polymer comprising the recurring units represented by the following general formula: in which k is an integer of from 1 to 30, R 1 is or R 2 is -COOR 3 -OCORs, -OR 3 , or -R 3 , in which R 3 is R 4 is -CH 3 or Cl, m is 0 or an integer of from 1 to 10, and n is 0 or an integer of from 1 to 10, provided that n is not 0, when R 4 , is -CH 3 .
Claim 2
Dependent Claim 92 words
A ferroelectric liquid crystal polymer comprising the recurring units represented by the following general formula: in which k is an integer of from 1 to 30, R 1 is or R 2 is -COOR 3 -OCORs, -OR 3 , or -R 3 , in which R 3 is R 4 is -CH 3 or Cl, m is 0 or an integer of from 1 to 10, and n is 0 or an integer of from 1 to 10, provided that n is not 0, when R 4 , is -CH 3 .
Claim 3
Dependent Claim 22 words
A ferroelectoric liquid polymer according to claim 1, wherein the number average molecular weight of the polymer is from 5,000 to 200,000.
Claim 4
Dependent Claim 22 words
A ferroelectric liquid crystal polymer according to claim 1 or 2 , wherein k is an integar of from 2 to 20.
Claim 5
Dependent Claim 19 words
A ferroelectric liquid crystal polymer according to claim 3, wherein k is an integar of from 11 to 20.
Claim 6
Dependent Claim 16 words
A ferroelectric liquid crystal polymer according to claim 3 or claim 4, wherein R 1 is
Claim 7
Dependent Claim 32 words
A ferroelectric liquid crystal polymer according to claim 2, wherein k is an integar of from 1 to 10, R 1 is and R 2 is -COOR 3 or -OCOR 3 .
Claim 8
Dependent Claim 16 words
A ferroelectric liquid crystal polymer according to claim 5, or claim 6 wherein R 3 is

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