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Polycarbonate for electrophotographic photoreceptor binder and electrophotographic photoreceptor

A technology of polycarbonate and electrophotography, applied in the direction of optics, electrical recording, instruments, etc., can solve unsatisfactory problems

Inactive Publication Date: 2015-12-02
TEIJIN KASEK KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, recently, as a binder polymer of an electrophotographic photoreceptor, properties such as abrasion resistance and high hardness are particularly required, and neither of the methods described in Patent Document 1 or Patent Document 2 is satisfactory.

Method used

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  • Polycarbonate for electrophotographic photoreceptor binder and electrophotographic photoreceptor
  • Polycarbonate for electrophotographic photoreceptor binder and electrophotographic photoreceptor
  • Polycarbonate for electrophotographic photoreceptor binder and electrophotographic photoreceptor

Examples

Experimental program
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Effect test

preparation example Construction

[0040] The polycarbonate can be produced by a production method known per se. For example, a dihydric phenol component derived from the carbonate of the above formula (I) can be reacted with a carbonate precursor such as phosgene or carbonic acid diester.

[0041] Specific dihydric phenol components include 4,4'-dihydroxybiphenyl, 4,4'-dihydroxy-3,3'-dimethylbiphenyl, bis(4-hydroxyphenyl)methane, 1,1-bis(4-hydroxyphenyl)ethane, 1,1-bis(4-hydroxyphenyl)-1-phenylethane, 2,2-bis(4-hydroxyphenyl)propane, 2 , 2-bis(4-hydroxy-3-methylphenyl)propane, 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, 2,2-bis( 4-Hydroxy-3,3'-biphenyl)propane, 2,2-bis(4-hydroxy-3-isopropylphenyl)propane, 2,2-bis(3-tert-butyl-4-hydroxy Phenyl)propane, 2,2-bis(4-hydroxyphenyl)butane, 2,2-bis(4-hydroxyphenyl)octane, 2,2-bis(3-bromo-4-hydroxyphenyl) ) propane, 2,2-bis(3,5-dibromo-4-hydroxyphenyl)propane, 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane, 2,2- Bis(3-cyclohexyl-4-hydroxyphenyl)propane, 1,1-b...

Embodiment

[0069] Hereinafter, although an Example is given and demonstrated in detail, unless the summary of this invention is exceeded, it is not limited to these Examples. In addition, evaluation follows the following method.

[0070] (1) Evaluation of abrasion resistance

[0071] 8 g of this polycarbonate was dissolved in methylene chloride to prepare a solution having a solid content concentration of 10% by weight. Pour the solution into In a Petri dish at room temperature overnight, at 40°C for 3 hours, and at 60°C for 3 hours, after removing the solvent, dry at 100°C for 24 hours to obtain a transparent extruded film with a thickness of about 250 μm. Using a sample obtained by cutting this extruded film into a disc shape with a diameter of 120 mm, abrasion evaluation was performed using a Suga abrasion tester NUS-ISO-3 model manufactured by Suga Test Instrument Co., Ltd.. The test conditions are under the atmosphere of 23° C. and 50% RH, using a Wrapping filmsheet manufactured...

Embodiment 8

[0083] In Example 8, the integrated value of the four hydrogen peaks (7.45 to 7.73 ppm) corresponding to the aromatic part of 4,4'-dihydroxybiphenyl (hereinafter referred to as BP) and the corresponding Bis-C methyl Calculated from the ratio of the integral values ​​of the six hydrogen peaks (2.07-2.46ppm).

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Abstract

The present invention relates to polycarbonate for a electronic photographing photoreceptor and the electronic photographing photoreceptor thereof. The invention provides the polycarbonate with excellent wearing resistance and high hardness as the resin for the electronic photographing photoreceptor. According to the polycarbonate for the electronic photographing photoreceptor and the electronic photographing photoreceptor, the polycarbonate has repetition units which are respectively represented by a formula (I). Phenol with siloxane is not used as end capping agent, and the end capping agent which is represented in a formula (II) is used. In the formula (I), R1 and R2 respectively represent hydrogen atom, fatty group alkyl with 1-6 carbon atoms, aryl or halogen atom with 6-12 carbon atoms, wherein a and b respectively represents an integer selected from 0-4. X is a random linked group which is selected from: single key, -O-, -S-, -SO-, -SO2-, -CO-, -CO2-, 9,9-fluorenylidene, and components which are represented in the lower formula (I-a). In the formula (II), R11 represents phenyl, and e is an integer selected from 1-3.

Description

technical field [0001] The present invention relates to a polycarbonate for an electrophotographic photoreceptor binder, which is characterized by excellent abrasion resistance and high hardness, and an electrophotographic photoreceptor using the polycarbonate for an electrophotographic photoreceptor binder. Background technique [0002] In the field of electrophotographic photoreceptors, polycarbonate resins are mainly used as the binder polymer of the photosensitive layer. [0003] In recent years, higher performance characteristics such as coating properties and sliding properties have been demanded for binder polymers in response to demands for improved image quality. [0004] Therefore, in Patent Document 1, it is proposed to introduce p-nonylphenol, n-dodecyl p-hydroxybenzoate, p-dodecyloxyphenol, etc. with alkyl, aromatic As a countermeasure for suppressing whitening (gelation) of the coating solution when producing electrophotographic photoreceptors, the end group w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G64/06C08G64/24G03G5/05
Inventor 木下明香松井学
Owner TEIJIN KASEK KK