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US4367208A
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Process for the manufacture of battery carbon black
Assignee: COLMBIAN CHEMICALS COMPANY A CORP OF DE
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Filing: 1981-06-30
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Granted: 1983-01-04
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Expires: 2001-06-30
Abstract
Abstract A process useful for the production of a carbon black useful as an ingredient in dry cell battery compositions is disclosed which comprises heating a carbon black feedstock having a dibutylphalate absorption (DBP) ranging from 200 to 250 cc/100 g, nitrogen surface area ranging from about 30 to about 60 m 2 /g, an average stacking height (L c ) of ordered graphitic layer segments ranging from about 1.1 to about 1.5 nm, and a wide aggregate size distribution with a range of measured aggregate volume from about 5×10 4 to about 1×10 9 nm 3 , a geometric mean aggregate volume (Log Vg, nm 3 ) of about 6.2 to about 7.5, and geometric standard deviation (for Log Vg, nm 3 ) of about 0.7 to about 1.0. This feedstock is heated to a temperature ranging from 1400° C. to 2400° C. under an inert atmosphere, thereby producing a carbon black having a DBP ranging from about 210 to about 270 cc/100 g, essentially the same nitrogen surface area, essentially the same aggregate volume and standard deviation, and an L c ranging from about 1.6 to about 3.7 nm.
Inventors
- 👤 Fred E. Glasstetter
- 👤 Frank J. Eckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:15
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/62; H01M4/624; H01M4/625; C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C01; C01P; C01P2004/00; C01P2004/50; C01P2004/51; C01P2004/53; C01P2006/00; C01P2006/12; C01P2006/19; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
132 words
A process for making a carbon black useful as an ingredient in dry cell battery compositions which comprises: a. heating a carbon black having a DBP ranging from 200 to 250 cc/100 g and a wide aggregate size distribution with a range of measured aggregate volume from about 5×10 4 to about 1×10 9 nm 3 , a geometric mean aggregate volume, Log Vg, nm 3 , of about 6.2 to about 7.5, and geometric standard deviation, for Log Vg, nm 3 , of about 0.7 to about 1.0 to a temperature ranging from 1400° C. to 2400° C. under an inert atmosphere for a time period ranging from about 9 seconds to about 10 minutes. b. cooling said heated carbon black to a temperature below 324° C. under an inert atmosphere.
Claim 2
Dependent Claim
132 words
A process for making a carbon black useful as an ingredient in dry cell battery compositions which comprises: a. heating a carbon black having a DBP ranging from 200 to 250 cc/100 g and a wide aggregate size distribution with a range of measured aggregate volume from about 5×10 4 to about 1×10 9 nm 3 , a geometric mean aggregate volume, Log Vg, nm 3 , of about 6.2 to about 7.5, and geometric standard deviation, for Log Vg, nm 3 , of about 0.7 to about 1.0 to a temperature ranging from 1400° C. to 2400° C. under an inert atmosphere for a time period ranging from about 9 seconds to about 10 minutes. b. cooling said heated carbon black to a temperature below 324° C. under an inert atmosphere.
Claim 3
Dependent Claim
23 words
The process of claim 1 wherein the carbon black is heated for a time period ranging from between 9 seconds and 2 minutes.
Claim 4
Dependent Claim
23 words
The process of claim 1 wherein the carbon black is heated for a time period ranging from between 9 seconds and 21 seconds.
Claim 5
Dependent Claim
22 words
The process of claim 1 wherein the carbon black is heated at a rate of between about 100° C./sec and 150° C./sec.
Claim 6
Dependent Claim
17 words
The process of claim 1 wherein said aggregate size distribution of said carbon black feedstock is bimodal.
Claim 7
Dependent Claim
22 words
The process of claim 1 wherein the carbon black has a nitrogen surface area of between 30 to 60 m 2 /g.
Claim 8
Dependent Claim
221 words
A process for making an oil furnace carbon black having a wide aggregate size distribution with a range of measured aggregate volume from about 5×10 4 to about 1×10 9 nm 3 , a geometric mean aggregate volume, Log Vg, nm 3 , of about 6.2 to about 7.5, and geometric standard deviation for Log Vg, nm 3 , of about 0.7 to about 1.0, a dibutylphalate absorption, DBP, ranging from about 210 to about 270 cc/100 g, a nitrogen surface area ranging from about 30 to about 60 m 2 /g and an L c ranging from about 2.7 to about 3.7 nm comprising: a. heating an oil furnace carbon black having a DBP ranging from 200 to 250 cc/100 g and a wide aggregate distribution with a range of measured aggregate volume from about 5×10 4 to about 1×10 9 nm 3 , a geometric mean aggregate volume, Log Vg, nm 3 , of about 6.2 to about 7.5, and geometric standard deviation, for Log Vg, nm 3 , of about 0.7 to about 1.0, to a temperature ranging from 1400° C. to 2400° C. under an inert atmosphere for a time period ranging from about 9 seconds to about 10 minutes; and b. cooling said heated carbon black to a temperature below 325° C. under an inert atmosphere.
Claim 9
Dependent Claim
221 words
A process for making an oil furnace carbon black having a wide aggregate size distribution with a range of measured aggregate volume from about 5×10 4 to about 1×10 9 nm 3 , a geometric mean aggregate volume, Log Vg, nm 3 , of about 6.2 to about 7.5, and geometric standard deviation for Log Vg, nm 3 , of about 0.7 to about 1.0, a dibutylphalate absorption, DBP, ranging from about 210 to about 270 cc/100 g, a nitrogen surface area ranging from about 30 to about 60 m 2 /g and an L c ranging from about 2.7 to about 3.7 nm comprising: a. heating an oil furnace carbon black having a DBP ranging from 200 to 250 cc/100 g and a wide aggregate distribution with a range of measured aggregate volume from about 5×10 4 to about 1×10 9 nm 3 , a geometric mean aggregate volume, Log Vg, nm 3 , of about 6.2 to about 7.5, and geometric standard deviation, for Log Vg, nm 3 , of about 0.7 to about 1.0, to a temperature ranging from 1400° C. to 2400° C. under an inert atmosphere for a time period ranging from about 9 seconds to about 10 minutes; and b. cooling said heated carbon black to a temperature below 325° C. under an inert atmosphere.
Claim 10
Dependent Claim
23 words
The process of claim 7, wherein the carbon black is heated for a time period ranging from between 9 seconds and 2 minutes.
Claim 11
Dependent Claim
23 words
The process of claim 7, wherein the carbon black is heated for a time period ranging from between 9 seconds and 21 seconds.
References Cited (Backward Citations)
JPS5180933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-03 | 1986-07-05 | 1987-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-03 | 1990-07-05 | 1991-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-03 | 1994-07-05 | 1995-01-04 | $7700.00 | Window Closed / Lapsed |