US4153769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl polymerization with boron chelates as catalyst and photoconductive sensitizer
Assignee: AB Dick Co
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Filing: 1976-11-08
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Granted: 1979-05-08
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Expires: 1996-11-08
Abstract
Abstract The preparation of a photoconductor which comprises the polymerization reaction product of an N-alkenyl carbazole or derivative thereof such as N-vinyl carbazole, in the presence of a catalyst in the form of a monochelate or muli-chelate of boron in which the chelate catalyzes the polymerization reaction and remains in the polymerization product as a sensitizer for the photoconductive properties of the organic polymer.
Inventors
- 👤 James M. Halm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:52
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G5/071; G03G5/072; G03G5/073; C; C07; C07C; C07C45/00; C07C45/45; C07C45/455; C07C49/00; C07C49/76; C07C49/782; C07C49/784; C07F; C07F5/00; C07F5/02; C07F5/022; C07F5/025
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
162 words
A process for polymerizing N-alkenyl carbazoles in the presence of a catalyst to produce organic polymers having sufficiently sensitized photoconductive properties to enable use as an organic photoconductor in the production of photoconductive elements with the catalyst remaining in the polymer comprising heating the carbazole in the presence of a catalyst compound having the general formula ##STR6## in which X and Y are selected from the group consisting of a halogen, an alkyl or cycloaliphatic group, an aryl or alkaryl group, an alkoxy group and a halogenated methyl derivative, Z is either an aryl group or a halogen group, n is a number from 1 to 5, R 1 and R 2 are selected from the group consisting of an alkyl or cycloaliphatic group, an aryl or alkaryl group, and in which R 2 may be a group having the general formula ##STR7## in which R 1 has the same meaning as above and p is a number from 1 to 2.
Claim 2
Dependent Claim
162 words
A process for polymerizing N-alkenyl carbazoles in the presence of a catalyst to produce organic polymers having sufficiently sensitized photoconductive properties to enable use as an organic photoconductor in the production of photoconductive elements with the catalyst remaining in the polymer comprising heating the carbazole in the presence of a catalyst compound having the general formula ##STR6## in which X and Y are selected from the group consisting of a halogen, an alkyl or cycloaliphatic group, an aryl or alkaryl group, an alkoxy group and a halogenated methyl derivative, Z is either an aryl group or a halogen group, n is a number from 1 to 5, R 1 and R 2 are selected from the group consisting of an alkyl or cycloaliphatic group, an aryl or alkaryl group, and in which R 2 may be a group having the general formula ##STR7## in which R 1 has the same meaning as above and p is a number from 1 to 2.
Claim 3
Dependent Claim
23 words
A process as claimed in claim 1 in which the alkyl group or the cycloaliphatic group have from 1 to 10 carbon atoms.
Claim 4
Dependent Claim
13 words
A process as claimed in claim 1 in which the halogen is fluorine.
Claim 5
Dependent Claim
29 words
A process as claimed in claim 1 in which the catalyst component is present in an amount within the range of 0.1 to 20% by weight of the carbazole.
Claim 6
Dependent Claim
24 words
A process as claimed in claim 1 in which the polymerization reaction is carried out at a temperature within the range of 60°-200° C.
Claim 7
Dependent Claim
23 words
A process as claimed in claim 1 in which the polymerization is carried out as a hot melt of the carbazole and catalyst.
Claim 8
Dependent Claim
20 words
A process as claimed in claim 1 in which the polymerization is carried out in the absence of a diluent.
Claim 9
Dependent Claim
18 words
A process as claimed in claim 1 in which the alkenyl carbazole is N-vinyl carbazole and analogs thereof.
Claim 10
Dependent Claim
20 words
A composition for use in the preparation of photoconductors comprising the polymerization reaction product of the process of claim 1.
Claim 11
Dependent Claim
21 words
The process as claimed in claim 1 in which the catalyst has the general formula ##STR8## prepared from an oxalate ester.
Claim 12
Dependent Claim
139 words
A process for the preparation of 4-vinyl substituted aryl based polymers and copolymers comprising the steps of polymerizing the vinyl based monomers in the presence of a catalyst compound having the general formula ##STR9## in which X and Y are selected from the group consisting of a halogen, an alkyl or cycloaliphatic group, an aryl or alkaryl group, an alkoxy group and a halogenated methyl derivative, Z is either an aryl group or a halogen group, n is a number from 1 to 5, R 1 and R 2 are selected from the group consisting of an alkyl or cycloaliphatic group, an aryl or alkaryl group, and in which R 2 may be a group having the general formula ##STR10## in which R 1 has the same meaning as above and p is a number from 1 to 2.
Claim 13
Dependent Claim
139 words
A process for the preparation of 4-vinyl substituted aryl based polymers and copolymers comprising the steps of polymerizing the vinyl based monomers in the presence of a catalyst compound having the general formula ##STR9## in which X and Y are selected from the group consisting of a halogen, an alkyl or cycloaliphatic group, an aryl or alkaryl group, an alkoxy group and a halogenated methyl derivative, Z is either an aryl group or a halogen group, n is a number from 1 to 5, R 1 and R 2 are selected from the group consisting of an alkyl or cycloaliphatic group, an aryl or alkaryl group, and in which R 2 may be a group having the general formula ##STR10## in which R 1 has the same meaning as above and p is a number from 1 to 2.
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) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |