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US5106530A Expired / Lapsed US ⏱️ 0.0 years remaining

Silylated benzoic acid derivatives

Assignee: Consortium fuer Elektrochemische Industrie GmbH
•
Filing: 1990-06-22
•
Granted: 1992-04-21
•
Expires: 2010-06-22
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Abstract

Abstract The present invention relates to compounds of the formula ##STR1## in which Z is a halogen atom, a cyano group or a hydroxyl group, n is 0, 1 or 2, R' is a radical of the formula R'"--[Si(R*).sub.2 ].sub.x (CH.sub.2).sub.y R""-- (9), in which x is the number 0 or 1, y is an integer from 1 to 18, R'"is a defined in the description, R* is identical or different, optionally substituted C 1 - to C 18 -hydrocarbon or hydrocarbonoxy radicals, R"" is a phenylene or biphenylene radical or a radical of the formula --E--, where E is a divalent radical of the formula --O-- or --[Si(R*) 2 ] z --, and z is the number 0 or 1, and the compounds contain at least one group of the formula --Si(R*) 2 -- per molecule, and the radical R" is a cholesteryl radical, a radical as defined for R* or a radical of the formula --C 6 H 4 --R*, and the preparation and use thereof.

Inventors

  • 👤 Wolfgang Haas
  • 👤 Norman Haberle
  • 👤 Rainer Winkler
  • 👤 Franz-Heinrich Kreuzer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 11:46
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/40; C09K19/406; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/081; C07F7/0834; C07F7/0838; C07F7/0896

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 179 words
A liquid crystalline compound of the formula ##STR18## in which R 1 is a C 1 - to C 18 alkyl group, v is an integer having a value of from 0 to 10, y is an integer of from 3 to 12, R 4 is selected from the group consisting of a single chemical bond, a radical of the formula ##STR19## R 5 is a radical selected from the group consisting of divalent radicals of the formulas and halogenated, divalent radicals of the formulas ##STR20## R 6 is selected from the group consisting of R 1 , a halogen atom, a cyano group, a hydrogen atom, a C 1 - to C 18 alkoxy group, a C 1 - to C 18 alkyl group substituted with chlorine atoms and a group of the formula --O--(CH.sub.2).sub.y --Si(CH.sub.3).sub.2 --[OSi(CH.sub.3).sub.2 ].sub.v --R.sup.1, (66) where y, v and R 1 are the same as above, with the proviso that if R 5 is a group of formula 64, R 6 is a C 1 -C 18 alkyl group substituted with chlorine atoms.
Claim 2
Dependent Claim 179 words
A liquid crystalline compound of the formula ##STR18## in which R 1 is a C 1 - to C 18 alkyl group, v is an integer having a value of from 0 to 10, y is an integer of from 3 to 12, R 4 is selected from the group consisting of a single chemical bond, a radical of the formula ##STR19## R 5 is a radical selected from the group consisting of divalent radicals of the formulas and halogenated, divalent radicals of the formulas ##STR20## R 6 is selected from the group consisting of R 1 , a halogen atom, a cyano group, a hydrogen atom, a C 1 - to C 18 alkoxy group, a C 1 - to C 18 alkyl group substituted with chlorine atoms and a group of the formula --O--(CH.sub.2).sub.y --Si(CH.sub.3).sub.2 --[OSi(CH.sub.3).sub.2 ].sub.v --R.sup.1, (66) where y, v and R 1 are the same as above, with the proviso that if R 5 is a group of formula 64, R 6 is a C 1 -C 18 alkyl group substituted with chlorine atoms.
Claim 3
Dependent Claim 10 words
A compound of claim 1, wherein the compound is 4-octyloxyphenyl-4-(6-trimethylsilylhexyloxy)benzoate.
Claim 4
Dependent Claim 11 words
A display device containing the liquid crystalline compound of claim 1.

References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1995-04-21 1995-10-21 1996-04-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1999-04-21 1999-10-21 2000-04-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2003-04-21 2003-10-21 2004-04-21 $7700.00 Window Closed / Lapsed

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