US3903249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon black feedstock
Assignee: Phillips Petroleum Co
•
Filing: 1973-01-17
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Granted: 1975-09-02
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Expires: 1993-01-17
Abstract
Abstract A method of producing carbon black under conventional operating conditions and in conventional furnace carbon black equipment in which the feedstock comprises a carbon-containing material in polymeric form in a liquid, solid, or solution state.
Inventors
- 👤 George R Hill
- 👤 Homer M Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:55
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; C01; C01P; C01P2006/00; C01P2006/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
126 words
A METHOD OF PRODUCING CARBON BLACK BY THE PYROLYTIC DECOMPOSITION OF A HYDROCARBON FEEDSTOCK WHICH COMPRISES: A. INTRODUCING A LIQUID HYDROCARBON FEEDSTOCK ANDA POLMERIC SUBSTANCE SELECTED FROM E GROUP CONSISTING OF POLYPROPYLENE, POLYVINYLCHILRIDE, POLYSTYRENE AND POLYETHLENE INTO A FURNANCE, SAID POLYMERIC SUBSTANCE COMPRISING AN AMOUNT WITHIN THE RANFGE OF FROM 0.5 TO ABOUT 20 WEIGHT PERCENT OF THE TOTAL WEIGHT OF SAID FEEDSTOCK AND SAID POLYMERIC SUBSTANCE, B. INTRODUCING A FUEL AND A GASEOUS OXIDANT INO SAID FURNACE, C. OXIDIZING SAID FUEL WITH SAID GASEOUS OXIDANT IN CONTACT WITH SAID HYDROCARBON FEEDSTOCK AND SAID POLYMERIC SUBSTANCE UNDER CARBON BLACK FORMING CONDITIONS TO BRING SAID FEEDSTOCK AND SAID POLYMERIC SUBSTANCE TO THEIR CARBON BLACK FORMING TEMPERATURES AND TO FORM CARBON BLACK, AND, D. RECOVERING THE CARBON BLACK.
Claim 2
Independent Claim
126 words
A METHOD OF PRODUCING CARBON BLACK BY THE PYROLYTIC DECOMPOSITION OF A HYDROCARBON FEEDSTOCK WHICH COMPRISES: A. INTRODUCING A LIQUID HYDROCARBON FEEDSTOCK ANDA POLMERIC SUBSTANCE SELECTED FROM E GROUP CONSISTING OF POLYPROPYLENE, POLYVINYLCHILRIDE, POLYSTYRENE AND POLYETHLENE INTO A FURNANCE, SAID POLYMERIC SUBSTANCE COMPRISING AN AMOUNT WITHIN THE RANFGE OF FROM 0.5 TO ABOUT 20 WEIGHT PERCENT OF THE TOTAL WEIGHT OF SAID FEEDSTOCK AND SAID POLYMERIC SUBSTANCE, B. INTRODUCING A FUEL AND A GASEOUS OXIDANT INO SAID FURNACE, C. OXIDIZING SAID FUEL WITH SAID GASEOUS OXIDANT IN CONTACT WITH SAID HYDROCARBON FEEDSTOCK AND SAID POLYMERIC SUBSTANCE UNDER CARBON BLACK FORMING CONDITIONS TO BRING SAID FEEDSTOCK AND SAID POLYMERIC SUBSTANCE TO THEIR CARBON BLACK FORMING TEMPERATURES AND TO FORM CARBON BLACK, AND, D. RECOVERING THE CARBON BLACK.
Claim 3
Dependent Claim
16 words
The method of claim 1 in which said polymeric substance is dissolved in said hydrocarbon feedstock.
Claim 4
Dependent Claim
19 words
The method of claim 1 in which said polymeric substance is suspended in particulate form in said hydrocarbon feedstock.
Claim 5
Dependent Claim
23 words
The method of claim 1 in which said polymeric substance is suspended in particulate form in said fuel or in said gaseous oxidant.
Claim 6
Dependent Claim
14 words
The method of claim 1 in which said polymeric substance is dissolved in benzene.
Claim 7
Dependent Claim
28 words
The method of claim 1 in which said hydrocarbon feedstock comprises benzene, said polymeric substance comprises polystyrene and said polystyrene is introduced as a solute in said benzene.
Claim 8
Dependent Claim
27 words
The method of claim 6 in which said polystyrene is contained in said benzene in an amount within the range of from 1 to 5 weight percent.
Claim 9
Dependent Claim
28 words
The method of claim 1 in which said hydrocarbon feedstock comprises benzene, said polymeric substance comprises polyvinylchloride and said polyvinylchloride is introduced as a solute in said benzene.
Claim 10
Dependent Claim
22 words
The method of claim 8 in which said polystyrene is contained in said benzene in an amount of about 2.2 weight percent.
Claim 11
Dependent Claim
31 words
The method of claim 5 in which said polymeric substance and said benzene are mixed with said hydrocarbon feedstock to form a mixture and said mixture is introduced into said furnace.
Claim 12
Dependent Claim
16 words
The method of claim 1 in which the hydrocarbon feedstock is an aromatic SO2 extract oil.
References Cited (Backward Citations)
US1606380A
Cited
US3073681A
Cited
US3175888A
Cited
US3563706A
Cited
US3808328A
Cited
US3674433A
Cited
US3700615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |