US4226967A
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Highly charge-transferable polycondensation polymer and process for preparation
Assignee: Asahi Kasei Corp
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Filing: 1979-04-30
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Granted: 1980-10-07
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Expires: 1999-04-30
Abstract
Abstract An electron acceptor polycondensation polymer of the formula (I) <IMAGE> (I) wherein R1 is a hydrogen atom or an alkyl group, an aryl group or an aralkyl group having not more than 15 carbon atoms; Cm is a divalent connecting group; FLac is an electron acceptor group having a fluorene nucleus as its basic structure; X and Y are a carbonyl group or an acid amide group forming a urethane linkage with the oxygen atom of the diol; R2 is a bifunctional organic residue having not more than 20 carbon atoms, n is a number greater than 10 which represents the degree of polycondensation of the resultant polycondensation polymer.
Inventors
- 👤 Shigeo Tazuke
- 👤 Hajime Nagahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:21
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; C08G18/384; C08G63/00; C08G63/68; C08G63/685; C08G63/688; C08K; C08K5/00; C08K5/01; C08K5/16; C08K5/17; C08K5/18; C08L; C08L39/00; C08L39/04; C08L39/08; C08L75/00; C08L75/04; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G5/075; H; H10; H10K; H10K85/00; H10K85/10; H10K85/141; H10K30/00; H10K85/60; H10K85/649; H10K85/657; H10K85/6572; Y; Y10; Y10S; Y10S430/00; Y10S430/001; Y10S430/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
108 words
An electron acceptor polycondensation polymer of the formula (I): ##STR13## wherein R 1 is a hydrogen atom or an alkyl group, an aryl group or an aralkyl group, having not more than 15 carbon atoms; C m is a divalent connecting group; FLac is an electron acceptor group having a fluorene nucleus; X and Y are a carbonyl group or an acid amide capable of forming a urethane linkage with the oxygen atom of a diol; R 2 is a divalent organic residue having not more than 20 carbon atoms; n is a number greater than 10 which represents the degree of polycondensation of the resultant polycondensation polymer.
Claim 2
Dependent Claim
108 words
An electron acceptor polycondensation polymer of the formula (I): ##STR13## wherein R 1 is a hydrogen atom or an alkyl group, an aryl group or an aralkyl group, having not more than 15 carbon atoms; C m is a divalent connecting group; FLac is an electron acceptor group having a fluorene nucleus; X and Y are a carbonyl group or an acid amide capable of forming a urethane linkage with the oxygen atom of a diol; R 2 is a divalent organic residue having not more than 20 carbon atoms; n is a number greater than 10 which represents the degree of polycondensation of the resultant polycondensation polymer.
Claim 3
Dependent Claim
18 words
The electron acceptor polycondensation polymer of claim 1, wherein FLac of the formula (I) is a 4,5,7-trinitro-9-oxo-2-fluorenyl group.
Claim 4
Dependent Claim
119 words
A high molecular weight charge transfer complex comprising the electron acceptor polycondensation polymer of the formula (I): ##STR14## wherein R 1 is a hydrogen atom or an alkyl group, an aryl group or an aralkyl group, having not more than 8 carbon atoms; C m is a divalent connecting group; FLac is an electron acceptor group having a fluorene nucleus; X and Y are a carbonyl group or an acid amide group forming a urethane linkage with the oxygen atom in the diol; R 2 is a divalent organic residue having not more than 20 carbon atoms; n is a number greater than 10 which represents the degree of polycondensation of the resultant polycondensation polymer; and an electron donor.
Claim 5
Dependent Claim
119 words
A high molecular weight charge transfer complex comprising the electron acceptor polycondensation polymer of the formula (I): ##STR14## wherein R 1 is a hydrogen atom or an alkyl group, an aryl group or an aralkyl group, having not more than 8 carbon atoms; C m is a divalent connecting group; FLac is an electron acceptor group having a fluorene nucleus; X and Y are a carbonyl group or an acid amide group forming a urethane linkage with the oxygen atom in the diol; R 2 is a divalent organic residue having not more than 20 carbon atoms; n is a number greater than 10 which represents the degree of polycondensation of the resultant polycondensation polymer; and an electron donor.
Claim 6
Dependent Claim
70 words
The high molecular weight charge transfer complex of claim 3, wherein said electron donor is an electron donor polycondensation polymer of the formula (IV) below: ##STR15## wherein R' 1 , C' m , R' 2 , X', Y' and n' are the same as defined for R 1 , C m , R 2 , X, Y and n in the formula (I) and D is an electron donor group.
Claim 7
Dependent Claim
26 words
The high molecular weight charge transfer complex of claim 4, wherein D is an electron donor group having an ionization potential of 10 eV or less.
Claim 8
Dependent Claim
29 words
The high molecular weight charge transfer complex of claim 4, wherein D is selected from the group consisting of a 9-carbazolyl group, a 9-anthryl group, and a 3-pyrenyl group.
Claim 9
Dependent Claim
29 words
The high molecular weight charge transfer complex of claim 3, wherein said electron donor is selected from the group consisting of poly(N-vinyl carbazole), poly-(4-vinyl pyridine), poly(p-dimethylaminostyrene) and copolymers thereof.
Claim 10
Dependent Claim
16 words
The high molecular weight charge transfer complex of claim 3, wherein said electron donor is poly-(N-vinylcarbazole).
Claim 11
Dependent Claim
41 words
The high molecular weight charge transfer complex of claim 3, wherein the electron donor is a high molecular electron donor, said charge transfer complex exhibiting a substantially equal level of performance either as a p-type photoconductor or as an n-type photoconductor.
Claim 12
Dependent Claim
49 words
A process for preparing an electron acceptor polycondensation polymer which comprises reacting propane diol containing a 4,5,7-trinitro-9-oxo-2-fluorenyl group and is represented by the formula below with a diisocyanate: ##STR16## wherein R" 1 and C" m are the same as defined for R 1 and C m in claim 1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-07 | 1984-04-07 | 1984-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-07 | 1988-04-07 | 1988-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-07 | 1992-04-07 | 1992-10-07 | $7700.00 | Window Closed / Lapsed |