Patent US4384034A successfully refreshed from Google Patents.
US4384034A
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Thiopyrylium dye sensitized photoconductive materials
Assignee: 3M Co
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Filing: 1981-02-27
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Granted: 1983-05-17
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Expires: 2001-02-27
Abstract
Abstract A photoconductive layer sensitized by a compound of the general formula: ##STR1## in which: R 1 and R 2 independently represent a hydrogen atom, an alkyl or substituted alkyl group, an aryl or substituted aryl group, an aralkyl or substituted aralkyl group, a cycloaliphatic or substituted cycloaliphatic group or a heterocyclic or substituted heterocyclic group providing R 1 and R 2 do not both represent cyclic groups of aromatic nature, or R 1 and R 2 together may represent the necessary atoms to complete a non-aromatic heterocyclic ring, R 3 , R 4 , R 5 and R 6 independently represent a hydrogen atom or any substituent providing the sum of their σ p constants has a value of less than +0.5, or R 3 and R 4 and/or R 5 and R 6 may represent the necessary atoms to complete an alicyclic or aromatic ring, R 3 and R 2 and/or R 1 and R 6 may represent the necessary atoms to complete a non-aromatic heterocyclic ring, R 7 and R 9 independently represent a hydrogen atom or any carbon linked substituent containing up to 16 carbon atoms, R 8 and R 10 independently represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or any two adjacent substituents R 7 , R 8 , R 9 and R 10 together may complete an alicyclic or aromatic ring, and X - represents an anion.
Inventors
- 👤 Alan N. Ferguson
- 👤 Kenneth Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:44
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0622; G03G5/0644; G03G5/0661; C; C07; C07D; C07D335/00; C07D335/02; G03G5/0624; G03G5/0635; G03G5/0637; Y; Y10; Y10S; Y10S430/00; Y10S430/001; Y10S430/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
293 words
A sensitized photoconductive layer comprising a binder, at least 15% by weight of an electron donating compound and a sensitizing amount of a thiopyrylium compound of the general formula: ##STR8## in which: R 1 and R 2 are independently selected from the group consisting of a hydrogen atom, an alkyl or substituted alkyl group, an aryl or substituted aryl group, an aralkyl or substituted aralkyl group, a cycloaliphatic or substituted cycloaliphatic group, and a heterocyclic or substituted heterocyclic group of C, S, N and O atoms in 5, 6 or 7-membered rings providing R 1 and R 2 do not both represent cyclic groups of aromatic nature, and R 1 and R 2 together may represent the necessary atoms to complete a non-aromatic heterocyclic ring, R 3 , R 4 , R 5 and R 6 are independently selected from the group consisting of a hydrogen atom and any substituent providing the sum of their σ p constants has a value of less than +0.5, and R 3 and R 4 and/or R 5 and R 6 may represent the necessary atoms to complete an alicyclic or aromatic ring, and R 3 and R 2 and/or R 1 and R 6 represent the necessary atoms to complete a non-aromatic heterocyclic ring, R 7 and R 9 are independently selected from the group consisting of a hydrogen atom and any carbon linked substituent containing up to 16 carbon atoms, R 8 and R 10 are independently selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and any two adjacent substituents R 7 , R 8 , R 9 and R 10 together may complete an alicyclic or aromatic ring, and X - represents an anion.
Claim 2
Dependent Claim
293 words
A sensitized photoconductive layer comprising a binder, at least 15% by weight of an electron donating compound and a sensitizing amount of a thiopyrylium compound of the general formula: ##STR8## in which: R 1 and R 2 are independently selected from the group consisting of a hydrogen atom, an alkyl or substituted alkyl group, an aryl or substituted aryl group, an aralkyl or substituted aralkyl group, a cycloaliphatic or substituted cycloaliphatic group, and a heterocyclic or substituted heterocyclic group of C, S, N and O atoms in 5, 6 or 7-membered rings providing R 1 and R 2 do not both represent cyclic groups of aromatic nature, and R 1 and R 2 together may represent the necessary atoms to complete a non-aromatic heterocyclic ring, R 3 , R 4 , R 5 and R 6 are independently selected from the group consisting of a hydrogen atom and any substituent providing the sum of their σ p constants has a value of less than +0.5, and R 3 and R 4 and/or R 5 and R 6 may represent the necessary atoms to complete an alicyclic or aromatic ring, and R 3 and R 2 and/or R 1 and R 6 represent the necessary atoms to complete a non-aromatic heterocyclic ring, R 7 and R 9 are independently selected from the group consisting of a hydrogen atom and any carbon linked substituent containing up to 16 carbon atoms, R 8 and R 10 are independently selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and any two adjacent substituents R 7 , R 8 , R 9 and R 10 together may complete an alicyclic or aromatic ring, and X - represents an anion.
Claim 3
Dependent Claim
29 words
The element of claim 1 wherein said thiopyrylium compound is in the form of a particulate discontinuous phase present as at least 0.005 percent by weight of said layer.
Claim 4
Dependent Claim
46 words
The element claimed in claim 2 in which R, R 4 , R 5 and R 6 independently are selected from the group consisting of a hydrogen atom and other substituent such that the sum of their σ p constants has a value less than +0.4.
Claim 5
Dependent Claim
35 words
The element claimed in claim 3 in which R 3 , R 4 , R 5 and R 6 are independently selected from the group consisting of H, alkyl, alkoxy, halogen and NH 2 .
Claim 6
Dependent Claim
56 words
The element claimed in claim 1, 2, 3 or 4, in which R 1 and R 2 are independently selected from the group consisting of H, CH 3 , C 2 H 5 , C 6 H 5 , C 6 H 5 CH 2 , cyclo-C 6 H 11 and CH 2 CH 2 OH.
Claim 7
Dependent Claim
23 words
The element claimed in claim 1, in which R 8 =R 10 =H and R 7 =R 9 =C 6 H 5 .
Claim 8
Dependent Claim
23 words
The element claimed in claim 4, in which R 8 =R 10 =H and R 7 =R 9 =C 6 H 5 .
Claim 9
Dependent Claim
32 words
The element of claim 1 wherein said thiopyrylium compound is in the form of a particulate discontinuous phase present as at least from 0.01 to 15 percent by weight of said layer.
References Cited (Backward Citations)
US3250615A
Cited
US3557088A
Cited
US3577235A
Cited
US3615414A
Cited
US3909260A
Cited
US4167412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-16 | 1986-11-15 | 1987-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-16 | 1990-11-15 | 1991-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-16 | 1994-11-15 | 1995-05-17 | $7700.00 | Window Closed / Lapsed |