US4243615A
Expired / Lapsed
US
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Process for preparing poly-dicarbon monofluoride
Assignee: Applied Science Research Institute
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Filing: 1979-06-29
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Granted: 1981-01-06
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Expires: 1999-06-29
Abstract
Abstract A process for preparing a novel chemical compound poly-dicarbon monofluoride represented by the formula (C 2 F) n and having a crystalline structure of packing form featured by its layer structure stacked with an interlayer spacing of about 9.0 A. Such process consists in that a particulate carbon material having a specific crystallinity is reacted with fluorine at 300° to 500° C. According to the process, the desired product can be obtained in a yield as high as 100% with respect to not only the carbon material employed but also the fluorine employed.
Inventors
- 👤 Nobuatsu Watanabe
- 👤 Yasushi Kita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:20
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/10
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
97 words
A process for preparing a chemical compound polydicarbon monofluoride represented by the formula (C.sub.2 F).sub.n and having a crystalline structure in which a layer structure is stacked with an interlayer spacing of about 9.0 A to form a packing structure, said crystalline structure exhibiting a peak at about 10° in terms of an angle of 20θ in the X-ray diffraction powder pattern, comprising reacting a particulate carbon material having Franklin's P-value of about 0 to about 0.6 with fluorine at a temperature of 300° to 500° C. until complete fluorination of the particulate carbon material is accomplished.
Claim 2
Dependent Claim
97 words
A process for preparing a chemical compound polydicarbon monofluoride represented by the formula (C.sub.2 F).sub.n and having a crystalline structure in which a layer structure is stacked with an interlayer spacing of about 9.0 A to form a packing structure, said crystalline structure exhibiting a peak at about 10° in terms of an angle of 20θ in the X-ray diffraction powder pattern, comprising reacting a particulate carbon material having Franklin's P-value of about 0 to about 0.6 with fluorine at a temperature of 300° to 500° C. until complete fluorination of the particulate carbon material is accomplished.
Claim 3
Dependent Claim
28 words
A process according to claim 1, wherein the reaction is effected in an atmosphere of fluorine gas under an F 2 pressure of 50 mmHg to 1.5 atm.
Claim 4
Dependent Claim
17 words
A process according to claim 1, wherein the reaction is effected for 10 minutes to 150 hours.
Claim 5
Dependent Claim
14 words
A process according to claim 1, wherein the particulate carbon material is natural graphite.
Claim 6
Dependent Claim
16 words
A process according to claim 1, wherein the particulate carbon material is a graphitizing carbon material.
Claim 7
Dependent Claim
32 words
A process according to claim 5, wherein the graphitizing carbon material is petroleum coke which has been heat-treated at about 2,000° to about 3,000° C. for about 10 to about 20 minutes.
Claim 8
Dependent Claim
19 words
A process according to claim 1, wherein the particulate carbon material has a particle size of 1 to 150μ.
Claim 9
Dependent Claim
19 words
A process according to claim 6, wherein the particulate carbon material has a particle size of 20 to 100μ.
Claim 10
Dependent Claim
33 words
A process according to claim 1, wherein the particulate carbon material has a Franklin's P-value of 0 to about 0.10 and the reaction is effected at a temperature of 350° to 500° C.
Claim 11
Dependent Claim
34 words
A process according to claim 1, wherein the particulate carbon material has a Franklin's P-value of about 0.11 to about 0.45 and the reaction is effected at a temperature of 320° to 450° C.
Claim 12
Dependent Claim
34 words
A process according to claim 1, wherein the particulate carbon material has a Franklin's P-value of about 0.46 to about 0.6 and the reaction is effected at a temperature of 300° to 420° C.
Claim 13
Dependent Claim
33 words
A process according to claim 9, wherein the particulate carbon material has a Franklin's P-value of 0 to about 0.10 and the reaction is effected at a temperature of 350° to 400° C.
Claim 14
Dependent Claim
34 words
A process according to claim 10, wherein the particulate carbon material has a Franklin's P-value of about 0.11 to about 0.45 and the reaction is effected at a temperature of 320° to 360° C.
Claim 15
Dependent Claim
34 words
A process according to claim 11, wherein the particulate carbon material has a Franklin's P-value of about 0.46 to about 0.6 and the reaction is effected at a temperature of 300° to 340° C.
Claim 16
Dependent Claim
15 words
A process according to claim 1, wherein the reaction is effected in a closed system.
Claim 17
Dependent Claim
61 words
A process according to claim 1 which further comprises heating the resulting product at a temperature of about 50° C. higher than the reaction temperature for formation of the product to 600° C. for 5 to 10 hours in an atmosphere of fluorine gas under an F 2 pressure of at least 50 mm Hg to increase crystallinity of said product.
References Cited (Backward Citations)
FR2126595A5
Cited
FR2232510B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |