Benzidine derivative and electrophotosensitive material using the same

• US 5,550,290 A
• Filed: 09/28/1994
• Issued: 08/27/1996
• Est. Priority Date: 10/13/1993
• Status: Expired due to Term

• Current Assignee: Mita Industrial Co., Ltd. (Kyocera Corporation)
• Original Assignee: Mita Industrial Co., Ltd. (Kyocera Corporation)
• Inventors: Tanaka, Masashi, Kakui, Mikio, Fukami, Toshiyuki, Nakamori, Hideo, Saito, Sakae, Sumida, Keisuke, Shiomi, Hiroshi, Mizuta, Yasufumi, Uchida, Maki, Muto, Nariaki
• Primary Examiner(s): Raymond, Richard L.
• Application Number:
  US08/314,375
• Time in Patent Office: 699 Days
• Field of Search: 564/309
• US Class Current: 564/309
• CPC Class Codes: C07C 211/54 having amino groups bound to two or three six-membered aromatic rings
• CPC Class Codes: G03G 5/061443 benzidine

Abstract

The present invention relates to a benzidine derivative represented by the general formula (1): ##STR1## wherein R¹ to R⁶, m and n are as defined in the present specification. The benzidine derivative improves durability and heat resistance of a membrane containing the same while maintaining high hole transferring capability. Therefore, an electrophotosensitive material, which comprises a photosensitive layer containing the benzidine derivative, has high sensitivity and is superior in durability and heat resistance.

Claims

1. A benzidine derivative represented by the general formula (1):

##STR26## wherein R¹ and R² are the same or different and indicate a hydrogen atom or an alkyl group;

R³ and R⁴ are the same or different and indicate an alkyl group, an alkoxy group or a halogen atom;

R⁵ and R⁶ are the same or different and indicate an alkyl group having 3 to 5 carbon atoms or an aryl group which may contain a substituent; and

m and n are the same or different and indicate an integer of 2 or 3.

2. A benzidine derivative according to claim 1, which is represented by the general formula (1'"'"'):

##STR27## wherein R¹, R², R³, R⁴, R⁵, m and n are as defined in claim 1.

8. A benzidine derivative according to claim 1 where R⁵ and R⁶ are an aryl group.

9. A benzidine derivative according to claim 1 where R⁵ is an aryl group.

3. A benzidine derivative represented by the general formula (2):

##STR28## wherein R⁷ and R⁸ are the same or different and indicate an alkyl group, an alkoxy group or a halogen atom; and

R⁹, R¹⁰, R¹¹, R¹², R¹³, R¹⁴, R¹⁵, and R¹⁶ are the same or different and indicate an alkyl group, an alkoxy group or a halogen atom.

4. A benzidine derivative represented by the general formula (3);

##STR29## wherein R¹⁷, R¹⁸, R¹⁹, and R²⁰ are the same or different and indicate an alkyl group or an alkoxy group;

R²¹ and R²² are the same or different and indicate a hydrogen atom, an alkyl group, an alkoxy group or a halogen atom; and

R²³, and R²⁴ are the same or different and indicate an aryl group which may contain a substituent.

5. The benzidine derivative according to claim 4, which is represented by the general formula (3'"'"'):

##STR30## wherein R¹⁷, R¹⁸, R¹⁹ and R²⁰ are as defined in claim 4;

R²⁵ and R²⁶ are the same or different and indicate a hydrogen atom or an alkyl group; and

R²⁷ and R²⁸ are the same or different and indicate an aryl group which may contain a substituent.

6. A benzidine derivative represented by the general formula (4):

##STR31## wherein R²⁹, R³⁰, R³¹ and R³² are the same or different and indicate an alkyl group or an alkoxy group;

R³³ and R³⁴ are the same or different and indicate an alkyl group, an alkoxy group or a halogen atom; and

R³⁵ and R³⁶ are the same or different and indicate an alkyl group having 3 to 5 carbon atoms.

7. A benzidine derivative represented by the general formula (5):

##STR32## wherein R³⁷, R³⁸, R³⁹ and R⁴⁰ are the same or different and indicate a hydrogen atom or an alkyl group; and

R⁴¹ and R⁴² are the same or different and indicate an alkyl group.