US4036786A
Expired / Lapsed
US
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Fluorinated carbon composition and resistor utilizing same
Assignee: Globe Union Inc
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Filing: 1976-03-26
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Granted: 1977-07-19
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Expires: 1996-03-26
Abstract
Abstract A partially fluorinated acetylene black composition, represented by the empirical formula CF x wherein x has a value of from 0.01 to 0.04, is employed as the conductive component in a composite material resistor to form a high resistance value resistor having excellent temperature coefficient of resistivity, voltage sensitivity and Quantech current noise characteristics.
Inventors
- 👤 William H. Tiedemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:32
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; C; C01; C01B; C01B32/00; C01B32/10; H01C; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06573; H01C17/06586; H01C7/00; H01C7/003; H01C7/005; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31522; Y10T428/31786
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
70 words
As a new composition of matter, a composition capable of functioning as the conductive component of a composite material electrical resistant element to form a high resistance value electrical resistant element having excellent temperature coefficient of resistivity, voltage sensitivity and current noise characteristics, said composition comprising a finely divided, partially fluorinated carbon having the empirical formula CF x wherein x has a value ranging from between about 0.01 and 0.04.
Claim 2
Dependent Claim
70 words
As a new composition of matter, a composition capable of functioning as the conductive component of a composite material electrical resistant element to form a high resistance value electrical resistant element having excellent temperature coefficient of resistivity, voltage sensitivity and current noise characteristics, said composition comprising a finely divided, partially fluorinated carbon having the empirical formula CF x wherein x has a value ranging from between about 0.01 and 0.04.
Claim 3
Dependent Claim
14 words
A composition according to claim 1 wherein the carbon compound is an acetylene black.
Claim 4
Dependent Claim
52 words
A composite, electrical resistive element composition characterized by high resistivity, stable temperature coefficient of resistivity, linear voltage response and minimal current noise which comprises a current-conductive component of partially fluorinated carbon having the empirical formula CF x wherein x has a value of up to 0.2 and an inert, nonreactive, non-conductive binder-filler.
Claim 5
Dependent Claim
52 words
A composite, electrical resistive element composition characterized by high resistivity, stable temperature coefficient of resistivity, linear voltage response and minimal current noise which comprises a current-conductive component of partially fluorinated carbon having the empirical formula CF x wherein x has a value of up to 0.2 and an inert, nonreactive, non-conductive binder-filler.
Claim 6
Dependent Claim
16 words
A composition according to claim 3 wherein x has a value of from 0.01 to 0.04.
Claim 7
Dependent Claim
17 words
A composition according to claim 3 wherein the partially fluorinated carbon is a partially fluorinated acetylene black.
Claim 8
Dependent Claim
13 words
A composition according to claim 3 wherein the binder-filler is a polysulfone resin.
Claim 9
Dependent Claim
17 words
A composition according to claim 3 having a resistive efficiency ratio, R eff , greater than unity.
Claim 10
Dependent Claim
37 words
A composition according to claim 3 wherein the ratio of inert, non-conductive binder-filler and partially fluorinated carbon is such that the partially fluorinated carbon constitutes from about 2 to about 40 weight percent of the said components.
Claim 11
Dependent Claim
10 words
A composition according to claim 3 wherein x is 0.018.
Claim 12
Dependent Claim
10 words
A composition according to claim 3 wherein x is 0.033.
Claim 13
Dependent Claim
95 words
A composite electrical resistant element having high resistivity and superior temperature coefficient of resistivity, voltage response and current noise characteristics, which comprises a non-conductive, insulating, monolithic substrate, a resistive-conductive material coating applied at a predetermined thickness and area to a surface of the substrate and termination sectors for affixing a conductor thereto, said coating comprising a composition including as the essential conductive component, a partially fluorinated carbon represented by the formula CF x wherein x has a value of up to 0.2, and an inert, non-conductive binder-filler diluent material intimately admixed with said conductive component.
Claim 14
Dependent Claim
95 words
A composite electrical resistant element having high resistivity and superior temperature coefficient of resistivity, voltage response and current noise characteristics, which comprises a non-conductive, insulating, monolithic substrate, a resistive-conductive material coating applied at a predetermined thickness and area to a surface of the substrate and termination sectors for affixing a conductor thereto, said coating comprising a composition including as the essential conductive component, a partially fluorinated carbon represented by the formula CF x wherein x has a value of up to 0.2, and an inert, non-conductive binder-filler diluent material intimately admixed with said conductive component.
Claim 15
Dependent Claim
16 words
A resistor according to claim 11 wherein x has a value of from 0.01 to 0.04.
Claim 16
Dependent Claim
23 words
A resistor according to claim 11 wherein the conductive component is a partially fluorinated acetylene black and the binder-filler is a polysulfone resin.
Claim 17
Dependent Claim
31 words
A resistor according to claim 11 wherein the partially fluorinated conductive component of the resistive composition constitutes up to about 35 weight percent of the composition of conductive component and binder-filler.
Claim 18
Dependent Claim
19 words
A resistor according to claim 11 wherein the termination sector is formed from a coating of finely divided metal.
Claim 19
Dependent Claim
18 words
The resistor according to claim 11 wherein the non-conductive substrate is a flat sheet of polyethylene terephthalate polymer.
Claim 20
Dependent Claim
74 words
A resistor accoring to claim 11 having a resistive efficiency ratio R eff as determined by the expression R eff = R CF .sbsb.x/ R ab , wherein R CF .sbsb.x is the resistance of a resistor containing as the conductive component a predetermined proportion of partially fluorinated acetylene black and R AB is the resistance of a resistor with the same proportion of pure acetylene black as the conductive component, greater than unity.
Claim 21
Dependent Claim
69 words
In a composite carbon black base electrical resistance element comprising a non-conductive substrate and a resistive-conductive coating of inert, non-conductive binder-filler material and a finely divided carbonaceous conductive material in the form of a coating adhered to the substrate, the improvement comprising employing as the conductive carbonaceous component a partially fluorinated carbon black having the empirical formula CF x , wherein x has a value of up to 0.2.
Claim 22
Dependent Claim
69 words
In a composite carbon black base electrical resistance element comprising a non-conductive substrate and a resistive-conductive coating of inert, non-conductive binder-filler material and a finely divided carbonaceous conductive material in the form of a coating adhered to the substrate, the improvement comprising employing as the conductive carbonaceous component a partially fluorinated carbon black having the empirical formula CF x , wherein x has a value of up to 0.2.
Claim 23
Dependent Claim
16 words
A resistor according to claim 18 wherein x has a value of from 0.01 to 0.04.
Claim 24
Dependent Claim
16 words
A resistor according to claim 18 wherein the conductive component is a partially fluorinated acetylene black.
Claim 25
Dependent Claim
70 words
A composite, electrical resistive ink composition characterized by high resistivity and excellent temperature coefficient of resistivity, voltage response and current noise characteristics when applied to and dried on an inert, non-conductive substrate surface which comprises a resinous, non-conductive binder-filler material, a volatile organic solvent and, as a conductive component, a partially fluorinated acetylene black having the empirical formula CF x wherein x has a value of from 0.01 to 0.04.
Claim 26
Dependent Claim
70 words
A composite, electrical resistive ink composition characterized by high resistivity and excellent temperature coefficient of resistivity, voltage response and current noise characteristics when applied to and dried on an inert, non-conductive substrate surface which comprises a resinous, non-conductive binder-filler material, a volatile organic solvent and, as a conductive component, a partially fluorinated acetylene black having the empirical formula CF x wherein x has a value of from 0.01 to 0.04.
Claim 27
Dependent Claim
13 words
An ink according to claim 21 wherein the binder-filler is a polysulfone resin.
Claim 28
Independent Claim
159 words
A method of making a composite carbonaceous base electrical resistor which comprises: a. forming an admixture of a finely divided, inert, non-conductive resinous binder-filler material, a conductive finely divided, partially fluorinated carbon having the empirical formula CF x wherein x has a value of from 0.01 to 0.04, and an inert volatile organic solvent; b. grinding the slurry mixture so formed to provide a homogeneous, uniform slurry admixture of the said components; c. coating the slurry composition at a predetermined thickness and area to a non-conductive substrate surface; d. drying the coating so applied to remove the volatile solvent; e. preparing a termination ink comprising an admixture of finely divided conductive metal and inert, non-conductive resin in an organic solvent and mixing the admixture to provide a uniform suspension; f. coating the termination ink to predetermined sectors of the dried resistive coating applied to the substrate; and f. drying the termination ink coatings to remove the volatile organic solvent.
Claim 29
Independent Claim
159 words
A method of making a composite carbonaceous base electrical resistor which comprises: a. forming an admixture of a finely divided, inert, non-conductive resinous binder-filler material, a conductive finely divided, partially fluorinated carbon having the empirical formula CF x wherein x has a value of from 0.01 to 0.04, and an inert volatile organic solvent; b. grinding the slurry mixture so formed to provide a homogeneous, uniform slurry admixture of the said components; c. coating the slurry composition at a predetermined thickness and area to a non-conductive substrate surface; d. drying the coating so applied to remove the volatile solvent; e. preparing a termination ink comprising an admixture of finely divided conductive metal and inert, non-conductive resin in an organic solvent and mixing the admixture to provide a uniform suspension; f. coating the termination ink to predetermined sectors of the dried resistive coating applied to the substrate; and f. drying the termination ink coatings to remove the volatile organic solvent.
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) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |