Claims
- 1. A fluorine-containing N,N,N',N'-tetraarylbenzidine derivative of the formula: ##STR92## wherein R.sub.1 and R.sub.2 are independently a hydrogen atom, an alkyl group, an alkoxy group, a fluoroalkyl group or a fluoroalkoxy group, at least one of R.sub.1 and R.sub.2 is a fluoroalkyl group or a fluoroalkoxy group; and Ar.sup.1 and Ar.sup.2 are independently an aryl group which may have one or more substituents other than R.sub.1 and R.sub.2.
- 2. A fluorine-containing N,N,N',N'-tetraarylbenzidine derivative according to claim 1, which is a compound of the formula: ##STR93##
- 3. A fluorine-containing N,N,N',N'-tetraarylbenzidine derivative according to claim 1, which is a compound of the formula: ##STR94## wherein R.sub.2 is a hydrogen atom, an alkyl group, an alkoxy group, fluoroalkyl group or a fluoroalkoxy group.
- 4. A fluorine-containing N,N,N',N'-tetraarylbenzidine derivative according to claim 1, which is a compound of the formula: ##STR95## wherein Ar.sup.2 is ##STR96## and R.sub.2 is a hydrogen atom or an alkyl group.
- 5. A fluorine-containing N,N,N',N'-tetraarylbenzidine derivative according to claim 1, which is a compound of the formula: ##STR97## wherein R.sub.1 is a fluoroalkyl group or a fluoroalkoxy group; Ar.sup.2 is ##STR98## and R.sub.2 is a hydrogen atom, an alkyl group, an alkoxy group, a fluoroalkyl group or a fluoroalkoxy group.
Priority Claims (3)
Number |
Date |
Country |
Kind |
2-233899 |
Sep 1990 |
JPX |
|
2-234031 |
Sep 1990 |
JPX |
|
2-234032 |
Sep 1990 |
JPX |
|
Parent Case Info
This application is a divisional application of application Ser. No. 754,657, filed Sep. 4, 1991 now U.S. Pat. No. 5,160,487.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3935230 |
Yale |
Jan 1976 |
|
4933245 |
Akasaki et al. |
Jun 1990 |
|
Divisions (1)
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Number |
Date |
Country |
Parent |
754657 |
Sep 1991 |
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