Patent US3844809A successfully refreshed from Google Patents.
US3844809A
Expired / Lapsed
US
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Wet-pelleting of carbon black
Assignee: Phillips Petroleum Co
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Filing: 1973-04-02
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Granted: 1974-10-29
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Expires: 1993-04-02
Abstract
Abstract Carbon blank is pelleted employing a pelleting agent comprising as a pelleting agent a polyethylene glycol substituted with dimethyl silicon groups, as defined.
Inventors
- 👤 L Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:44
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/16; C08K; C08K3/00; C08K3/02; C08K3/04; C08K9/00; C08K9/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
91 words
A METHOD OF PRODUCING CARBON BLACK PELLETS WHICH COMPRISEES: A. INTRODUCING FLOCCULENT BLACK AND A NON-IONIC SURFACTANT INTO CONTACT TO FORM A MIXTURE, SAID NON-IONIC SURFACTANT CONSISTING PRINCIPALLY OF RANDOMLY REPEATING -CH2CH2O - AND -SI(CH3)2 - UNITS IN THE UNIT RATIO OF 7 TO 1, RESPECTIVELY, WHEREIN, THE MOLECULE 4 TO 5 -SI(CH3)2 - UNITS ARE PRESENT AND WHEREIN THE MOLECULE IS TERMINATED WITH HYDROXYL GROUPS AND WHEREIN SAID MOLECULE HAS NO SILICONE BONDS AND HAS NO SILICON TO HYDROGEN BONDS; AND, B. PELLETING THE MIXTURE OF FORM CARBON BLACK PELLETS.
Claim 2
Independent Claim
91 words
A METHOD OF PRODUCING CARBON BLACK PELLETS WHICH COMPRISEES: A. INTRODUCING FLOCCULENT BLACK AND A NON-IONIC SURFACTANT INTO CONTACT TO FORM A MIXTURE, SAID NON-IONIC SURFACTANT CONSISTING PRINCIPALLY OF RANDOMLY REPEATING -CH2CH2O - AND -SI(CH3)2 - UNITS IN THE UNIT RATIO OF 7 TO 1, RESPECTIVELY, WHEREIN, THE MOLECULE 4 TO 5 -SI(CH3)2 - UNITS ARE PRESENT AND WHEREIN THE MOLECULE IS TERMINATED WITH HYDROXYL GROUPS AND WHEREIN SAID MOLECULE HAS NO SILICONE BONDS AND HAS NO SILICON TO HYDROGEN BONDS; AND, B. PELLETING THE MIXTURE OF FORM CARBON BLACK PELLETS.
Claim 3
Dependent Claim
33 words
The method of claim 1 in which said surfactant is present in an aqueous solution in an amount within the range of from about 0.001 to about 0.1 weight percent of said solution.
Claim 4
Dependent Claim
36 words
The method of claim 2 in which said aqueous solution is employed in an amount within the range of from about 0.4 to about 2.5 parts by weight of carbon black per part of aqueous solution.
Claim 5
Dependent Claim
27 words
The method of claim 3 in which said aqueous solution contains up to about 15 weight percent nitric acid or up to about 2 weight percent molasses.
Claim 6
Dependent Claim
33 words
The method of claim 2 in which said surfactant is present in said aqueous solution in an amount of about 0.02 weight percent and said solution contains about 1 percent molasses by weight.
Claim 7
Dependent Claim
35 words
The method of claim 5 in which said solution is employed in an amount within the range of from about 0.4 to about 2.5 parts by weight of carbon black per part of aqueous solution.
Claim 8
Dependent Claim
27 words
The method of claim 6 in which said solution is employed in an amount of about 0.9 by weight of carbon black per part of aqueous solution.
Claim 9
Dependent Claim
65 words
A composition comprising carbon black and the non-ionic surfactant consisting principally of randomly repeating -CH2CH2O - and -Si(CH3)2- units in the unit ratio of 7 to 1, respectively, wherein, in the molecule 4 to 5 -Si(CH3)2- units are present and wherein the molecule is terminated with hydroxyl groups and wherein said molecule has no silicon to silicon bonds and has no silicon to hydrogen bonds.
Claim 10
Dependent Claim
65 words
A composition comprising carbon black and the non-ionic surfactant consisting principally of randomly repeating -CH2CH2O - and -Si(CH3)2- units in the unit ratio of 7 to 1, respectively, wherein, in the molecule 4 to 5 -Si(CH3)2- units are present and wherein the molecule is terminated with hydroxyl groups and wherein said molecule has no silicon to silicon bonds and has no silicon to hydrogen bonds.
Claim 11
Dependent Claim
7 words
The composition of claim 8 comprising molasses.
Claim 12
Dependent Claim
8 words
The composition of claim 8 comprising nitric acid.
References Cited (Backward Citations)
US2427238A
Cited
US2639225A
Cited
US2908586A
Cited
US3243409A
Cited
US3186928A
Cited
US3290165A
Cited
US3542639A
Cited
US3459844A
Cited
US3565658A
Cited
US3645765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |