Patent US5352554A successfully refreshed from Google Patents.
US5352554A
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Organic silicon compound, method of its production, and photoreceptor for electrophotography incorporating it
Assignee: Kao Corp
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Filing: 1992-10-30
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Granted: 1994-10-04
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Expires: 2012-10-30
Abstract
Abstract A compound represented by the formula (1): ##STR1## wherein Ar 1 represents an arylene group; Ar 2 and Ar 3 independently represent an aryl group or an arylene group; R 2 and R 3 , which may be identical or not, independently represent a hydrogen atom or an alkyl group having a carbon number of 4 or less, or R 2 and R 3 both represent --SiR 4 R 5 R 6 (R 4 , R 5 and R 6 , which may be identical or not, independently represent an alkyl group, aralkyl group or aryl group which may be substituted); R 1 represents --SiR 7 R 8 R 9 (R 7 , R 8 and R 9 , which may be identical or not, independently represent an alkyl group, cycloalkyl group, aralkyl group or aryl group which may be substituted, or none (only in the case where R 2 and R 3 represent --SiR 4 R 5 R 6 ), one or two of R 7 , R 8 and R 9 represent the following: ##STR2## wherein Ar 1 , Ar 2 , Ar 3 , R 2 and R 3 have the same definitions as above), a method of its production and a photoreceptor for electrophotography incorporating it as a charge transport material. The photoreceptor is very excellent in sensitivity and durability.
Inventors
- 👤 Masayuki Mishima
- 👤 Harumasa Yamasaki
- 👤 Takashi Matsuse
- 👤 Tadashi Sakuma
- 👤 Hiroyasu Togashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:49
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/062; C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/081; G03G5/05; G03G5/0528; G03G5/0557; G03G5/0564
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
277 words
A photoreceptor for electrophotography, comprising a conductive substrate having a charge generation layer and a charge transport layer disposed thereon, wherein said charge transport layer comprises a compound represented by the formula (1): ##STR14## wherein Ar 1 represents an arylene group; Ar 2 and Ar 3 independently represent an aryl group or an arylene group; R 2 and R 3 , which may be identical or different, independently represent a hydrogen atom or an alkyl group having a carbon number of 4 or less, or R 2 and R 3 both represent --SiR 4 R 4 R 6 , wherein R 4 , R 5 , and R 6 , which may be identical or different, independently represent an alkyl group, a substituted or unsubstituted aralkyl group or a substituted or unsubstituted aryl group; R 1 represents --SiR 7 R 8 R 9 wherein R 7 , R 8 , and R 9 , which may be identical or different, independently represent an alkyl group, a cycloalkyl group, a substituted or unsubstituted aralkyl group or a substituted or unsubstituted aryl group and up to two or R 7 , R 8 , and R 9 represent the following: ##STR15## wherein Ar 1 , Ar 2 , Ar 3 , R 2 and R 3 have the same definitions as above with the proviso that when both R 2 and R 3 are not --SiR 4 R 5 R 6 , one of two of R 7 , R 8 and R 9 represent the following: ##STR16## wherein Ar 1 , Ar 2 , Ar 3 , R 2 and R 3 have the same definitions as above.
Claim 2
Dependent Claim
277 words
A photoreceptor for electrophotography, comprising a conductive substrate having a charge generation layer and a charge transport layer disposed thereon, wherein said charge transport layer comprises a compound represented by the formula (1): ##STR14## wherein Ar 1 represents an arylene group; Ar 2 and Ar 3 independently represent an aryl group or an arylene group; R 2 and R 3 , which may be identical or different, independently represent a hydrogen atom or an alkyl group having a carbon number of 4 or less, or R 2 and R 3 both represent --SiR 4 R 4 R 6 , wherein R 4 , R 5 , and R 6 , which may be identical or different, independently represent an alkyl group, a substituted or unsubstituted aralkyl group or a substituted or unsubstituted aryl group; R 1 represents --SiR 7 R 8 R 9 wherein R 7 , R 8 , and R 9 , which may be identical or different, independently represent an alkyl group, a cycloalkyl group, a substituted or unsubstituted aralkyl group or a substituted or unsubstituted aryl group and up to two or R 7 , R 8 , and R 9 represent the following: ##STR15## wherein Ar 1 , Ar 2 , Ar 3 , R 2 and R 3 have the same definitions as above with the proviso that when both R 2 and R 3 are not --SiR 4 R 5 R 6 , one of two of R 7 , R 8 and R 9 represent the following: ##STR16## wherein Ar 1 , Ar 2 , Ar 3 , R 2 and R 3 have the same definitions as above.
Claim 3
Dependent Claim
58 words
The photoreceptor according to claim 1, wherein said charge transfer layer further comprises a polycarbonate resin which comprises a repeating unit represented by formula (55): ##STR17## wherein R 10 , R 11 , R 12 , R 13 , R 14 , R 15 , R 16 and R 17 independently represent a hydrogen, halogen or alkyl group.
Claim 4
Dependent Claim
17 words
A photoreceptor for electrophotography according to claim 2 wherein said resin is represented by the formula: ##STR18##
Claim 5
Dependent Claim
51 words
The photoreceptor according to claim 1, wherein said compound of formula (1) is represented by a compound of the formula (2): ##STR19## wherein Ar 1 , Ar 2 , Ar 3 , R 2 , R 3 , R 7 and R 9 have the same definitions as in claim 1.
Claim 6
Dependent Claim
15 words
The photoreceptor according to claim 4 wherein R 7 and R 9 represent alkyl groups.
Claim 7
Dependent Claim
18 words
The photoreceptor according to claim 4, wherein said compound of formula (2) is represented by the formula: ##STR20##
Claim 8
Dependent Claim
18 words
The photoreceptor according to claim 4, wherein said compound of formula (2) is represented by the formula: ##STR21##
Claim 9
Dependent Claim
48 words
The photoreceptor according to claim 1, wherein said compound of formula (1) is represented by a compound of the formula (3): ##STR22## wherein Ar 1 , Ar 2 , Ar 3 , R 2 , R 3 and R 7 have the same definitions as in claim 1.
Claim 10
Dependent Claim
13 words
The photoreceptor according to claim 8 wherein R 7 represents an alkyl group.
Claim 11
Dependent Claim
18 words
The photoreceptor according to claim 8, wherein said compound of formula (3) is represented by the formula: ##STR23##
Claim 12
Dependent Claim
18 words
The photoreceptor according to claim 8, wherein said compound of formula (3) is represented by the formula: ##STR24##
Claim 13
Dependent Claim
57 words
The photoreceptor according to claim 1, wherein said compound of formula (1) is represented by a compound of the formula (4): ##STR25## wherein Ar 1 , Ar 2 , Ar 3 , R 4 , R 5 , R 6 , R 7 , R 8 and R 9 have the same definitions as in claim 1.
Claim 14
Dependent Claim
27 words
The photoreceptor according to claim 12 wherein R 4 , R 5 , R 6 , R 7 , R 8 and R 9 represent alkyl groups.
Claim 15
Dependent Claim
18 words
The photoreceptor according to claim 12, wherein said compound of formula (4) is represented by the formula: ##STR26##
Claim 16
Dependent Claim
18 words
The photoreceptor according to claim 12, wherein said compound of formula (4) is represented by the formula: ##STR27##
Claim 17
Dependent Claim
269 words
A photoreceptor for electrophotography, comprising a conductive substrate and a light sensitive layer, said light sensitive layer comprising a compound represented by the formula (1): ##STR28## wherein Ar 1 represents an arylene group; Ar 2 and Ar 3 independently represent an aryl group or an arylene group; R 2 and R 3 , which may be identical or different, independently represent a hydrogen atom or an alkyl group having a carbon number of 4 or less, or R 2 and R 3 both represent --SiR 4 R 5 R 6 , wherein R 4 , R 5 , and R 6 , which may be identical or different, independently represent an alkyl group, a substituted or unsubstituted aralkyl group or a substituted or unsubstituted aryl group; R 1 represents --SiR 7 R 8 R 9 wherein R 7 , R 8 , and R 9 , which may be identical or different, independently represent an alkyl group, a cycloalkyl group, a substituted or unsubstituted aralkyl group or a substituted or unsubstituted aryl group and up to two or R 7 , R 8 , and R 9 represent the following: ##STR29## wherein Ar 1 , Ar 2 , Ar 3 , R 2 and R 3 have the same definitions as above with the proviso that when both R 2 and R 3 are not --SiR 4 R 5 R 6 , one of two of R 7 , R 8 and R 9 represent the following: ##STR30## wherein Ar 1 , Ar 2 , Ar 3 , R 2 and R 3 have the same definitions as above.
Claim 18
Dependent Claim
269 words
A photoreceptor for electrophotography, comprising a conductive substrate and a light sensitive layer, said light sensitive layer comprising a compound represented by the formula (1): ##STR28## wherein Ar 1 represents an arylene group; Ar 2 and Ar 3 independently represent an aryl group or an arylene group; R 2 and R 3 , which may be identical or different, independently represent a hydrogen atom or an alkyl group having a carbon number of 4 or less, or R 2 and R 3 both represent --SiR 4 R 5 R 6 , wherein R 4 , R 5 , and R 6 , which may be identical or different, independently represent an alkyl group, a substituted or unsubstituted aralkyl group or a substituted or unsubstituted aryl group; R 1 represents --SiR 7 R 8 R 9 wherein R 7 , R 8 , and R 9 , which may be identical or different, independently represent an alkyl group, a cycloalkyl group, a substituted or unsubstituted aralkyl group or a substituted or unsubstituted aryl group and up to two or R 7 , R 8 , and R 9 represent the following: ##STR29## wherein Ar 1 , Ar 2 , Ar 3 , R 2 and R 3 have the same definitions as above with the proviso that when both R 2 and R 3 are not --SiR 4 R 5 R 6 , one of two of R 7 , R 8 and R 9 represent the following: ##STR30## wherein Ar 1 , Ar 2 , Ar 3 , R 2 and R 3 have the same definitions as above.
References Cited (Backward Citations)
US2960517A
Cited
US3171851A
Cited
US3308144A
Cited
US3350311A
Cited
US3344070A
Cited
US3647429A
Cited
JPS5327033A
Cited
JPS5635140A
Cited
EP0332921A2
Cited
US5116703A
Cited
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