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US4694098A Expired / Lapsed US ⏱️ 0.0 years remaining

Colorless liquid crystalline compounds

Assignee: Kanto Chemical Co Inc
•
Filing: 1985-08-02
•
Granted: 1987-09-15
•
Expires: 2005-08-02
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Abstract

Abstract A colorless liquid crystalline compound having at least one 6-membered ring and non-cyclic end groups in the molecular skeleton, said 6-membered ring containing two or more carbon atoms, at least one of which is directly bonded to a methylene group of a non-cyclic group having an alkoxy group at another end has a wide mesomorphic range. When said colorless liquid crystalline compound is mixed with a liquid crystal composition, the resulting mixture also has an enlarged mesomorphic range and in almost all cases has a reduced viscosity.

Inventors

  • 👤 Yoichi Hirai
  • 👤 Tsunenori Fujii
  • 👤 Kaoru Koto
  • 👤 Kenji Suzuki
  • 👤 Masahiro Yoshida
  • 👤 Hisashi Okawa
  • 👤 Yoshiaki Okabe
  • 👤 Teruo Kitamura
  • 👤 Hisao Yokokura
  • 👤 Shintaroo Hattori
  • 👤 Akio Mukoh
  • 👤 Mikio Sato

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 05:39
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/26; C07C; C07C255/00; C07C29/00; C07C29/132; C07C29/136; C07C29/147; C07C31/00; C07C31/13; C07C31/137; C07C43/00; C07C43/02; C07C43/03; C07C43/14; C07C43/164; C07C43/168; C07C43/20; C07C43/21; C07C43/225; C07C43/23; C07C57/00; C07C57/46; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/20; C09K19/2007; C09K19/30; C09K19/3001; C09K19/3003; C09K19/3066; C09K19/3068; C09K19/32; C09K19/321; C09K19/34; C09K19/3402; C09K19/3441; C09K19/345; C09K19/3458; C09K19/3475; C09K2019/3422; C09K2019/3425

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 60 words
A colorless liquid crystalline compound of the formula: R.sup.1 --A--B--R.sup.2 wherein R 1 is --(CH 2 ) n OC m H 2m+1 wherein n is an integer of 1 to 8; and m is an integer of 1 to 12; A is ##STR222## B is ##STR223## and R 2 is an alkyl group having not more than 12 carbon atoms.
Claim 2
Dependent Claim 60 words
A colorless liquid crystalline compound of the formula: R.sup.1 --A--B--R.sup.2 wherein R 1 is --(CH 2 ) n OC m H 2m+1 wherein n is an integer of 1 to 8; and m is an integer of 1 to 12; A is ##STR222## B is ##STR223## and R 2 is an alkyl group having not more than 12 carbon atoms.
Claim 3
Dependent Claim 48 words
A colorless liquid crystalline compound of the formula: ##STR224## wherein R is C 3 H 7 , C 4 H 9 , C 5 H 11 , C 6 H 13 or C 7 H 15 and wherein R' is CH 3 or C 3 H 7 .
Claim 4
Dependent Claim 48 words
A colorless liquid crystalline compound of the formula: ##STR224## wherein R is C 3 H 7 , C 4 H 9 , C 5 H 11 , C 6 H 13 or C 7 H 15 and wherein R' is CH 3 or C 3 H 7 .
Claim 5
Dependent Claim 16 words
A colorless liquid crystalline compound according to claim 2, wherein the compound has the formula: ##STR225##
Claim 6
Dependent Claim 48 words
A colorless liquid crystalline compound of the formula: R.sup.5 OCH.sub.2 --A"--COO--B"--R.sup.4 wherein R 4 and R 5 are independently a straight-chain or branched-chain alkyl group having 12 or less carbon atoms; when A" is ##STR226## then B" is ##STR227## and when A" is ##STR228## then B" is ##STR229##
Claim 7
Dependent Claim 48 words
A colorless liquid crystalline compound of the formula: R.sup.5 OCH.sub.2 --A"--COO--B"--R.sup.4 wherein R 4 and R 5 are independently a straight-chain or branched-chain alkyl group having 12 or less carbon atoms; when A" is ##STR226## then B" is ##STR227## and when A" is ##STR228## then B" is ##STR229##
Claim 8
Dependent Claim 38 words
A colorless liquid crystalline compound of the formula: ##STR230## wherein R 4 and R 5 are independently a straight-chain or branched-chain alkyl group having 12 or less carbon atoms and p is an integer of 1 to 6.
Claim 9
Dependent Claim 38 words
A colorless liquid crystalline compound of the formula: ##STR230## wherein R 4 and R 5 are independently a straight-chain or branched-chain alkyl group having 12 or less carbon atoms and p is an integer of 1 to 6.

References Cited (Backward Citations)

GB1352411A Cited
US4005064A Cited
US3953491A Cited
DD105701A1 Cited
DE2648701A1 Cited
JPS5268881A Cited
US4130502A Cited
US4158011A Cited
US4181625A Cited
US4198130A Cited
US4372871A Cited
US4229315A Cited
US4261652A Cited
US4279770A Cited
US4374748A Cited
JPS5777658A Cited
JPS5799542A Cited
JPS57108056A Cited
US4564694A Cited
US4431564A Cited
JPS5849355A Cited
US4468340A Cited
JPS58121265A Cited
JPS58121266A Cited
JPS58131942A Cited
JPS58134046A Cited
JPS58134051A Cited
JPS58134052A Cited
US4479885A Cited
US4507222A Cited
JPS58167671A Cited
US4452719A Cited
US4522741A Cited
JPS5911387A Cited
JPS59141539A Cited
JPS59157057A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-09-14 1991-03-16 1991-09-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-09-14 1995-03-16 1995-09-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-09-14 1999-03-16 1999-09-15 $7700.00 Window Closed / Lapsed

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