US4331552A
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US
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Liquid crystalline, partially hydrogenated oligo-1,4-phenylenes and dielectrics and electro-optical display elements containing them
Assignee: Merck Patent GmbH
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Filing: 1980-12-05
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Granted: 1982-05-25
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Expires: 2000-12-05
Abstract
Abstract Partially hydrogenated oligo-1,4-phenylenes of the formula <IMAGE> wherein n is 1 or 2, the rings A and B are identical or different and are trans-4-alkylcyclohexyl or 4-alkylcyclohex-1-enyl, and the alkyl groups in each case are of up to 10 carbon atoms, have valuable liquid crystalline properties.
Inventors
- 👤 Rudolf Eidenschink
- 👤 Ludwig Pohl
- 👤 Michael Romer
- 👤 Fernando Del Pino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:49
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/42; C09K19/44; C07; C07C; C07C13/00; C07C13/28; C07C17/00; C07C17/093; C07C17/10; C07C17/12; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/3003; C09K19/3098; C09K2019/3021
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
53 words
A partially hydrogenated oligo-1,4-phenylene of the formula ##STR22## wherein n is 1 or 2, the rings A and B are identical or different and are trans-4-alkylcyclohexyl or 4-alkylcyclohex-1-enyl, and the alkyl groups in each case are of up to 10 carbon atoms, and are straight chained or branched containing only one chain branching.
Claim 2
Dependent Claim
53 words
A partially hydrogenated oligo-1,4-phenylene of the formula ##STR22## wherein n is 1 or 2, the rings A and B are identical or different and are trans-4-alkylcyclohexyl or 4-alkylcyclohex-1-enyl, and the alkyl groups in each case are of up to 10 carbon atoms, and are straight chained or branched containing only one chain branching.
Claim 3
Dependent Claim
30 words
A partially hydrogenated oligo-1,4-phenylene of claim 1 of the formula ##STR23## wherein R 1 and R 2 are identical or different and are alkyl of up to 10 carbon atoms.
Claim 4
Dependent Claim
30 words
A partially hydrogenated oligo-1,4-phenylene of claim 1 of the formula ##STR24## wherein R 1 and R 2 are identical or different and are alkyl of up to 10 carbon atoms.
Claim 5
Dependent Claim
30 words
A partially hydrogenated oligo-1,4-phenylene of claim 1 of the formula ##STR25## wherein R 1 and R 2 are identical or different and are alkyl of up to 10 carbon atoms.
Claim 6
Dependent Claim
30 words
A partially hydrogenated oligo-1,4-phenylene of claim 1 of the formula ##STR26## wherein R 1 and R 2 are identical or different and are alkyl of up to 10 carbon atoms.
Claim 7
Dependent Claim
20 words
A compound of claim 1 wherein the alkyl groups on the A and B rings together contain 4-13 carbon atoms.
Claim 8
Dependent Claim
20 words
A liquid crystal dielectric comprising two liquid crystalline components at least one of which is a compound of claim 1.
Claim 9
Dependent Claim
18 words
An electro-optical display element comprising an electro-optical liquid crystal cell containing a liquid crystal dielectric of claim 7.
Claim 10
Dependent Claim
19 words
A partially hydrogenated oligo-1,4-phenylene of claim 1 wherein at least one of the rings A or B is 4-alkylcyclohex-1-enyl.
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