US4492652A
Expired / Lapsed
US
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Reactions of aromatic compounds having two or more fused rings
Assignee: AT&T Labs Inc
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Filing: 1983-01-31
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Granted: 1985-01-08
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Expires: 2003-01-31
Abstract
Abstract The pyrolysis of aromatic compounds with fused rings in the aromatic system which form free radicals on the peri position, for example, by eliminating a stable inorganic gas produces desirable products. These products include electrically conductive inert films. Further, with the addition of suitable inorganic compounds to the reactant, superconducting materials are obtainable. The addition of sulfur to the pyrolysis reactant also is possible and allows production of compounds useful as donors for the production of organic electrically conducting compositions.
Inventors
- 👤 Martin L. Kaplan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:51
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; H; H01; H01B; H01B1/00; H01B1/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
161 words
A process for the production of a carbon containing body comprising the steps of pyrolyzing a carbon containing compound and collecting a reaction product from said pyrolysis characterized in that said carbon containing compound comprises an aromatic organic compound having fused aromatic rings which are pyrolyzed at a temperature in the range from 700 to 1200 degrees C., and which due to said pyrolysis, forms free radicals at the peri positions of said fused rings of said carbon containing compound, wherein said free radicals are formed due to said pyrolysis through the production of a stable inorganic gas by removal of a substituent from said peri positions of said compound without the destruction of said fused aromatic rings, wherein said pyrolysis is performed in the absence of an additional agent which reacts with said free radicals and wherein said reaction product is deposited on a substrate which is heated to a temperature below said pyrolysis temperature sufficient to allow said deposition.
Claim 2
Dependent Claim
161 words
A process for the production of a carbon containing body comprising the steps of pyrolyzing a carbon containing compound and collecting a reaction product from said pyrolysis characterized in that said carbon containing compound comprises an aromatic organic compound having fused aromatic rings which are pyrolyzed at a temperature in the range from 700 to 1200 degrees C., and which due to said pyrolysis, forms free radicals at the peri positions of said fused rings of said carbon containing compound, wherein said free radicals are formed due to said pyrolysis through the production of a stable inorganic gas by removal of a substituent from said peri positions of said compound without the destruction of said fused aromatic rings, wherein said pyrolysis is performed in the absence of an additional agent which reacts with said free radicals and wherein said reaction product is deposited on a substrate which is heated to a temperature below said pyrolysis temperature sufficient to allow said deposition.
Claim 3
Dependent Claim
16 words
The process of claim 1 wherein said carbon containing compound is 3, 4, 9, 10-perylenetetracarboxylic dianhydride.
Claim 4
Dependent Claim
153 words
A product formed by the process comprising the steps of pyrolyzing a carbon containing compound and collecting a reaction product from said pyrolysis characterized in that said carbon containing compound comprises an aromatic organic compound having fused aromatic rings which, due to said pyrolysis at a temperature in the range from 700 to 1200 degrees C., forms free radicals at the peri positions of said fused rings of said carbon containing compound, wherein said free radicals are formed due to said pyrolysis through the production of a stable inorganic gas by removal of a substituent from said peri positions of said compound without the destruction of said fused aromatic rings, wherein said pyrolysis is performed in the absence of an additional agent which reacts with said free radicals and wherein said reaction product is deposited on a substrate which is heated to a temperature below said pyrolysis temperature sufficient to allow said deposition.
Claim 5
Dependent Claim
153 words
A product formed by the process comprising the steps of pyrolyzing a carbon containing compound and collecting a reaction product from said pyrolysis characterized in that said carbon containing compound comprises an aromatic organic compound having fused aromatic rings which, due to said pyrolysis at a temperature in the range from 700 to 1200 degrees C., forms free radicals at the peri positions of said fused rings of said carbon containing compound, wherein said free radicals are formed due to said pyrolysis through the production of a stable inorganic gas by removal of a substituent from said peri positions of said compound without the destruction of said fused aromatic rings, wherein said pyrolysis is performed in the absence of an additional agent which reacts with said free radicals and wherein said reaction product is deposited on a substrate which is heated to a temperature below said pyrolysis temperature sufficient to allow said deposition.
Claim 6
Dependent Claim
18 words
The product of claim 3 wherein said free radicals are formed by elimination of a stable inorganic gas.
Claim 7
Dependent Claim
141 words
A process for the production of a carbon containing body comprising the steps of pyrolyzing a carbon containing compound and collecting a reaction product from said pyrolysis characterized in that said carbon containing compound comprises an aromatic organic compound having fused aromatic rings which, due to said pyrolysis at a temperature in the range from 700 to 1200 degrees C., forms free radicals at the peri positions of said fused rings of said carbon containing compound, wherein said free radicals are formed due to said pyrolysis through the production of a stable inorganic gas by removal of a substituent from said peri positions of said compound without the destruction of said fused aromatic rings, wherein sulfur is the only agent present during said pyrolysis step which reacts with said radicals, and wherein said collected reaction product is a high volatility product.
Claim 8
Dependent Claim
141 words
A process for the production of a carbon containing body comprising the steps of pyrolyzing a carbon containing compound and collecting a reaction product from said pyrolysis characterized in that said carbon containing compound comprises an aromatic organic compound having fused aromatic rings which, due to said pyrolysis at a temperature in the range from 700 to 1200 degrees C., forms free radicals at the peri positions of said fused rings of said carbon containing compound, wherein said free radicals are formed due to said pyrolysis through the production of a stable inorganic gas by removal of a substituent from said peri positions of said compound without the destruction of said fused aromatic rings, wherein sulfur is the only agent present during said pyrolysis step which reacts with said radicals, and wherein said collected reaction product is a high volatility product.
Claim 9
Dependent Claim
11 words
The process of claim 5 wherein said compound is 3,4,9,10-perylenetetracarboxylic dianhydride.
Claim 10
Dependent Claim
18 words
The process of claim 5 wherein said free radicals are formed by elimination of a stable inorganic gas.
Claim 11
Dependent Claim
133 words
A process for the production of a carbon containing body comprising the steps of pyrolyzing a carbon containing compound and collecting a reaction product from said pyrolysis characterized in that said carbon containing compound comprises an aromatic organic compound having fused aromatic rings which, due to said pyrolysis at a temperature in the range from 700 to 1200 degrees C., forms free radicals at the peri positions of said fused rings of said carbon containing compound, wherein said free radicals are formed due to said pyrolysis through the production of a stable inorganic gas by removal of a substituent from said peri positions of said compound without the destruction of said fused aromatic rings, and wherein a niobium compound is the only agent present during said pyrolysis step which reacts with said radicals.
Claim 12
Dependent Claim
133 words
A process for the production of a carbon containing body comprising the steps of pyrolyzing a carbon containing compound and collecting a reaction product from said pyrolysis characterized in that said carbon containing compound comprises an aromatic organic compound having fused aromatic rings which, due to said pyrolysis at a temperature in the range from 700 to 1200 degrees C., forms free radicals at the peri positions of said fused rings of said carbon containing compound, wherein said free radicals are formed due to said pyrolysis through the production of a stable inorganic gas by removal of a substituent from said peri positions of said compound without the destruction of said fused aromatic rings, and wherein a niobium compound is the only agent present during said pyrolysis step which reacts with said radicals.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-08 | 1988-07-09 | 1989-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-08 | 1992-07-09 | 1993-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-08 | 1996-07-09 | 1997-01-08 | $7700.00 | Window Closed / Lapsed |