US4013623A
Expired / Lapsed
US
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Intrachain charge transfer complexes
Assignee: Xerox Corp
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Filing: 1975-07-16
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Granted: 1977-03-22
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Expires: 1995-07-16
Abstract
Abstract Method for achieving free radical initiated copolymerization of an addition monomer having pendant therefrom a strong donor group with an addition monomer having pendant therefrom a strong acceptor group. Copolymers prepared according to this method can be represented by the following formula: ##STR1## wherein R is hydrogen or methyl; R' is hydrogen or methyl; R" is hydrogen or methyl; R'" is alkyl of 1-10 carbon atoms; R' v is selected from the group consisting of --NO 2 , halogen, --CN and --CF 3 ; X and Y are independently selected from the group consisting of hydrogen, chlorine, bromine, alkyl or 1-4 carbon atoms and phenyl; Z is oxygen or dicyanomethylene; a and b can range from 0-4; and n and m can range from about 5 to about 95 percent. The polymeric compositions prepared according to this method are suitable for use in electrophotography either alone as the primary photoresponsive entity or in combination with other photoconductive materials.
Inventors
- 👤 Sam R. Turner
- 👤 Milan Stolka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:59
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/30; C08F220/00; C08F220/02; C08F220/10; C08F220/12; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G5/071; Y; Y10; Y10S; Y10S430/00; Y10S430/001; Y10S430/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
133 words
Copolymers of the formula ##STR5## wherein R is hydrogen or alkyl of 1-6 carbon atoms; R' is hydrogen or methyl; R" is hydrogen or methyl; R'" is alkyl of 1-10 carbon atoms; R iv is selected from the group consisting of --NO 2 , halogen, --CN and --CF 3 ; X and Y are independently selected from the group consisting of hydrogen, chlorine, bromine, alkyl of 1-4 carbon atoms and phenyl; Z is oxygen or dicyanomethylene; a and b are in the range of from 0-4; n is in the range of from about 5 to about 95 percent of the total number of structural units of the copolymer; and m is in the range of from about 5 to about 95 percent of the total number of structural units of the copolymer.
Claim 2
Dependent Claim
133 words
Copolymers of the formula ##STR5## wherein R is hydrogen or alkyl of 1-6 carbon atoms; R' is hydrogen or methyl; R" is hydrogen or methyl; R'" is alkyl of 1-10 carbon atoms; R iv is selected from the group consisting of --NO 2 , halogen, --CN and --CF 3 ; X and Y are independently selected from the group consisting of hydrogen, chlorine, bromine, alkyl of 1-4 carbon atoms and phenyl; Z is oxygen or dicyanomethylene; a and b are in the range of from 0-4; n is in the range of from about 5 to about 95 percent of the total number of structural units of the copolymer; and m is in the range of from about 5 to about 95 percent of the total number of structural units of the copolymer.
Claim 3
Dependent Claim
14 words
The copolymer of claim 1 comprising structural units from 1(2-anthryl) ethyl methacrylate and 2-ethylmethacryl-4,5,7-trinitro-9-fluorenone-2-carboxylate.
Claim 4
Dependent Claim
15 words
The copolymer of claim 1 comprising structural units from 1(2-anthryl) ethyl methacrylate and methyl methacrylate.
Claim 5
Independent Claim
154 words
A method for achieving free radical initiated copolymerization of an addition monomer having pendant therefrom a strong donor group with an addition monomer having pendant therefrom a strong acceptor group comprising: contacting an addition monomer having pendant therefrom a strong donor group and represented by the formula (II) with an addition monomer having pendant therefrom a strong acceptor group and represented by the formula (I) in the presence of free radicals ##STR6## wherein R is hydrogen or alkyl of 1-6 carbon atoms; R' is hydrogen or methyl; R" is hydrogen or methyl; R'" is alkyl of 1-10 carbon atoms; R iv is selected from the group consisting of --NO 2 , halogen, --CN and --CF 3 ; X and Y are independently selected from the group consisting of hydrogen, chlorine, bromine, alkyl of 1-4 carbon atoms and phenyl; Z is oxygen or dicyanomethylene; and a and b are in the range of from 0-4.
Claim 6
Independent Claim
154 words
A method for achieving free radical initiated copolymerization of an addition monomer having pendant therefrom a strong donor group with an addition monomer having pendant therefrom a strong acceptor group comprising: contacting an addition monomer having pendant therefrom a strong donor group and represented by the formula (II) with an addition monomer having pendant therefrom a strong acceptor group and represented by the formula (I) in the presence of free radicals ##STR6## wherein R is hydrogen or alkyl of 1-6 carbon atoms; R' is hydrogen or methyl; R" is hydrogen or methyl; R'" is alkyl of 1-10 carbon atoms; R iv is selected from the group consisting of --NO 2 , halogen, --CN and --CF 3 ; X and Y are independently selected from the group consisting of hydrogen, chlorine, bromine, alkyl of 1-4 carbon atoms and phenyl; Z is oxygen or dicyanomethylene; and a and b are in the range of from 0-4.
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) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |