EP0087963A2
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Phthalonitrile derivatives and liquid crystal compositions containing them
Assignee: Mitsubishi Chemical Corp
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Filing: 1983-02-25
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Granted: —
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Expires: 2003-02-25
Abstract
Abstract Phthalonitrile derivatives are represented by the formula (I): wherein X and Y each represents a C1-9 alkyl or alkoxy group, The compounds are prepared by cyclisation reaction of a butadiene derivative X-CH=CH-CH-CH-Y with fumaronitrile or dicycanoacetylene, followed by oxidation or bromination. The compounds have a large negative dielectric anis- tropy, and wide liquid crystal range, and are useful, alone or with other liquid crystals, in liquid crystal display devices. wherein R represents H, or a halogen atom, where m is an integer of 1 to 9 and n is 0, 1 or 2, but at least one of X and Y does not represents a methyl group, and Y does not represent an alkyl or alkoxy group when X represents and R' represents an alkyl group.
Inventors
- 👤 Akio Mukoh
- 👤 Teruo Kitamura
- 👤 Masaharu Kaneko
- 👤 Tetsuo Ozawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 08:44
CPC Classifications
C; C07; C07C; C07C255/00; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/12; C09K19/30; C09K19/3001; C09K19/3003; C09K19/3066; C09K19/32; C09K19/321; C09K19/0403; C09K2019/0407
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
121 words
A phthalonitrile derivative represented by the general formula (I): wherein X and Y each represents an alkyl group having 1 to 9 carbon atoms, an alkoxy group having 1 to 9 carbon atoms, (wherein R 1 represents a hydrogen atom, -C m H 2m+1 , -O-(CH 2 CH 2 O) n -C m H 2m+1 , or a halogen atom, wherein m represents an integer of 1 to 9 and n represents 0, 1 or 2), but at least one of X and Y does not represent a methyl group, and Y does not represent an alkyl or alkoxy group having 1 to 9 carbon atoms when X represents and R represents an alkyl group having 1 to 9 carbon atoms.
Claim 2
Dependent Claim
121 words
A phthalonitrile derivative represented by the general formula (I): wherein X and Y each represents an alkyl group having 1 to 9 carbon atoms, an alkoxy group having 1 to 9 carbon atoms, (wherein R 1 represents a hydrogen atom, -C m H 2m+1 , -O-(CH 2 CH 2 O) n -C m H 2m+1 , or a halogen atom, wherein m represents an integer of 1 to 9 and n represents 0, 1 or 2), but at least one of X and Y does not represent a methyl group, and Y does not represent an alkyl or alkoxy group having 1 to 9 carbon atoms when X represents and R represents an alkyl group having 1 to 9 carbon atoms.
Claim 3
Dependent Claim
76 words
A phthalonitrile derivative according to Claim 1 and represented by the formula (II): wherein R 4 represents a hydrogen atom, an alkyl group having 1 to 9 carbon atoms, an alkoxy group having 1 to 9 carbon atoms, a halogen atom, or , and R 3 represents an alkyl group having 1 to 9 carbon atoms or (wherein R 4 represents a hydrogen atom or an alkyl or alkoxy group having 1 to 9 carbon atoms).
Claim 4
Dependent Claim
57 words
A phthalonitrile derivative according to Claim 2 and represented by the formula (II'): wherein R 2' represents an alkyl or alkoxy group having 1 to 9 carbon atoms, and R 3' represents an alkyl group having 1 to 9 carbon atoms or (wherein R 4' represents an alkyl or alkoxy group having 1 to 9 carbon atoms).
Claim 5
Dependent Claim
94 words
A phthalonitrile derivative according to Claim 1 and represented by the formula (III): wherein R represents a hydrogen atom, an alkyl group having 1 to 9 carbon atoms, an alkoxy group having 1 to 9 carbon atoms or and R 6 represents an alkyl or alkoxy group having 1 to 9 carbon atoms, (wherein R 4 represents a halogen atom, a hydrogen atom or an alkyl group or alkoxy group having 1 to 9 carbon atoms), but R 6 does not represent an alkyl or alkoxy group when R 5 represents an alkyl group.
Claim 6
Dependent Claim
53 words
A phthalonitrile derivative according to Claim 4 and represented by the formula (III'): wherein R 5' represents a hydrogen atom, an alkyl or alkoxy group having 1 to 9 carbon atoms, and R6 represents (wherein R 4" represents a halogen atom or an alkyl or alkoxy group having 1 to 9 carbon atoms.
Claim 7
Dependent Claim
73 words
A phthalonitrile derivative according to Claim 1 and represented by the formula (IV): wherein R 7 represents an alkyl group having 1 to 9 carbon atoms, R 8 represents an alkyl or an alkoxy group having 1 to 9 carbon atoms, (wherein R 4 represents a hydrogen atom, an alkyl group having 1 to 9 carbon atoms or an alkoxy group having 1 to 9 carbon atoms), and p represents 0 or 1.
Claim 8
Dependent Claim
17 words
A liquid crystal composition containing a phthalonitrile derivative as claimed in any of Claims 1 to 6.
References Cited (Backward Citations)
No citation records indexed.
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