US4913839A
Expired / Lapsed
US
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Ferroelectric liquid crystal polymer
Assignee: Idemitsu Kosan Co Ltd
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Filing: 1989-04-18
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Granted: 1990-04-03
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Expires: 2009-04-18
Abstract
Abstract A ferroelectric liquid crystal polymer comprising the recurring units represented by the following general formula: ##STR1## in which k is an integer of from 1 to 30, R 1 is ##STR2## R 2 is --COOR 3 , --OCOR 3 , --OR 3 , or --R 3 , in which R 3 is ##STR3## R 4 is --CH 3 or Cl, m is 0 or an integar of from 1 to 10, n is 0 or an integar of from 1 to 10, providing 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
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:28
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: 18
Claim 1
Independent Claim
109 words
A ferroelectric liquid crystal polymer consisting essentially of the recurring units represented by the following general formula: ##STR86## in which k is an integer of from 1 to 30, R 1 is ##STR87## R 2 is --COOR 3 , --OCOR 3 , --OR 3 , or --R 3 , in which R 3 is ##STR88## 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, providing that n is not 0 when R 4 is --CH 3 and having a number average molecular weight of from 3,000 to 400,00.
Claim 2
Dependent Claim
109 words
A ferroelectric liquid crystal polymer consisting essentially of the recurring units represented by the following general formula: ##STR86## in which k is an integer of from 1 to 30, R 1 is ##STR87## R 2 is --COOR 3 , --OCOR 3 , --OR 3 , or --R 3 , in which R 3 is ##STR88## 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, providing that n is not 0 when R 4 is --CH 3 and having a number average molecular weight of from 3,000 to 400,00.
Claim 3
Dependent Claim
31 words
A ferroelectric liquid crystal polymer according to claim 1, wherein k is an integer of from 6 to 16, and m is 0 or an integer of from 1 to 5.
Claim 4
Dependent Claim
44 words
A ferroelectric liquid crystal polymer according to claim 1, wherein k is an integer of from 10 to 16, R 2 is ##STR89## m is 0 or an integer of from 1 to 3, and n is an integer of from 1 to 5.
Claim 5
Dependent Claim
40 words
A ferroelectric liquid crystal polymer according to claim 1, wherein k is an integer of from 10 to 16, R 2 is ##STR90## m is 0 or 1, and n is 0 or an integer of from 1 to 5.
Claim 6
Dependent Claim
24 words
A ferroelectric liquid crystal polymer according to claim 1, wherein a number of average molecular weight of the polymer is from 5,000 to 200,000.
Claim 7
Dependent Claim
14 words
A ferroelectric liquid crystal polymer according to claim 3, wherein R 2 is ##STR91##
Claim 8
Dependent Claim
18 words
A ferroelectric liquid crystal polymer according to claim 3, wherein k is 10, and R 1 is ##STR92##
Claim 9
Dependent Claim
18 words
A ferroelectric liquid crystal polymer according to claim 3, wherein k is 12, and R 1 is ##STR93##
Claim 10
Dependent Claim
18 words
A ferroelectric liquid crystal polymer according to claim 3, wherein k is 14, and R 1 is ##STR94##
Claim 11
Dependent Claim
18 words
A ferroelectric liquid crystal polymer according to claim 3, wherein k is 15, and R 1 is ##STR95##
Claim 12
Dependent Claim
18 words
A ferroelectric liquid crystal polymer according to claim 3, wherein k is 16, and R 1 is ##STR96##
Claim 13
Dependent Claim
18 words
A ferroelectric liquid crystal polymer according to claim 3, wherein k is 12, and R 1 is ##STR97##
Claim 14
Dependent Claim
18 words
A ferroelectric liquid crystal polymer according to claim 3, wherein k is 16, and R 1 is ##STR98##
Claim 15
Dependent Claim
18 words
A ferroelectric liquid crystal polymer according to claim 3, wherein k is 12, and R 1 is ##STR99##
Claim 16
Dependent Claim
18 words
A ferroelectric liquid crystal polymer according to claim 3, wherein k is 16, and R 1 is ##STR100##
Claim 17
Dependent Claim
18 words
A ferroelectric liquid crystal polymer according to claim 3, wherein k is 10, and R 1 is ##STR101##
Claim 18
Dependent Claim
18 words
A ferroelectric liquid crystal polymer according to claim 4, wherein k is 12, and R 1 is ##STR102##
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