US4231857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing petroleum-derived binder pitch
Assignee: Eneos Corp
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Filing: 1979-07-05
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Granted: 1980-11-04
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Expires: 1999-07-05
Abstract
Abstract A process for the preparation of petroleum-derived binder pitch, comprising heat treating a mixture of both (1) a heavy fraction boiling at not lower than 200 DEG C. and being obtained by the steam cracking of petroleum such as naphtha and (2) a heavy fraction boiling at not lower than 200 DEG C. and being obtained by the catalytic cracking of petroleum such as gas oil.
Inventors
- 👤 Osamu Kato
- 👤 Seiichi Uemura
- 👤 Syunichi Yamamoto
- 👤 Takao Hirose
- 👤 Hiroaki Takashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:09
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/005
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
64 words
A process for the preparation of petroleum-derived binder pitch, comprising heat treating at 380°-500° C. for 15 minutes-20 hours a mixture of both (1) a heavy fraction boiling at not lower than 200° C. and being obtained by the steam cracking of petroleum and (2) a heavy fraction boiling at not lower than 200° C. and being obtained by the catalytic cracking of petroleum.
Claim 2
Dependent Claim
64 words
A process for the preparation of petroleum-derived binder pitch, comprising heat treating at 380°-500° C. for 15 minutes-20 hours a mixture of both (1) a heavy fraction boiling at not lower than 200° C. and being obtained by the steam cracking of petroleum and (2) a heavy fraction boiling at not lower than 200° C. and being obtained by the catalytic cracking of petroleum.
Claim 3
Dependent Claim
26 words
A process according to claim 1, wherein the mixture contains the heavy fractions (1) and (2) in the ratios by volume of from 95-10 to 5-90.
Claim 4
Dependent Claim
46 words
A process according to claim 1, wherein the heavy fraction (1) is obtained as a by-product at the time of steam cracking petroleum selected from the group consisting of naphtha, kerosene, gas oil, crude oils and straight-run residual oils, at 700°-1200° C. to obtain olefins therefrom.
Claim 5
Dependent Claim
72 words
A process according to claim 1, wherein the heavy fraction (2) is obtained as a by-product at the time of catalytically cracking petroleums selected from the group consisting of kerosene, gas oil and atmospheric pressure residual oils, in the presence of natural or synthetic silica-alumina catalyst at a temperature of from 450° to 550° C. and a pressure of from atmospheric to 20 Kg/cm 2 G to obtain gasoline from the petroleum.
Claim 6
Dependent Claim
112 words
A process according to claim 1, wherein the heavy fraction (1) is obtained as a by-product at the time of steam cracking petroleum selected from the group consisting of naphtha, kerosene, gas oil, crude oils and straight-run residual oils, at 700°-1200° C. to obtain olefins therefrom, and the heavy fraction (2) is obtained as a by-product at the time of catalytically cracking petroleum selected from the group consisting of kerosene, gas oil and atmospheric pressure residual oils, in the presence of natural or synthetic silica-alumina catalyst at a temperature of from 450° to 550° C. and a pressure of from atmospheric to 20 Kg/cm 2 G to obtain gasoline from the petroleum.
Claim 7
Dependent Claim
46 words
A process according to claim 2, wherein the heavy fraction (1) is obtained as a by-product at the time of steam cracking petroleum selected from the group consisting of naphtha, kerosene, gas oil, crude oils and straight-run residual oils, at 700°-1200° C. to obtain olefins therefrom.
Claim 8
Dependent Claim
72 words
A process according to claim 2, wherein the heavy fraction (2) is obtained as a by-product at the time of catalytically cracking petroleum selected from the group consisting of kerosene, gas oil and atmospheric pressure residual oils, in the presence of natural or synthetic silica-alumina catalyst at a temperature of from 450° to 550° C. and a pressure of from atmospheric to 20 Kg/cm 2 G to obtain gasoline from the petroleum.
Claim 9
Dependent Claim
112 words
A process according to claim 2, wherein the heavy fraction (1) is obtained as a by-product at the time of steam cracking petroleum selected from the group consisting of naphtha, kerosene, gas oil, crude oils and straight-run residual oils, at 700°-1200° C. to obtain olefins therefrom, and the heavy fraction (2) is obtained as a by-product at the time of catalytically cracking petroleum selected from the group consisting of kerosene gas oil and atmospheric pressure residual oils, in the presence of natural or synthetic silica-alumina catalyst at a temperature of from 450° to 550° C. and a pressure of from atmospheric to 20 Kg/cm 2 G to obtain gasoline from the petroleum.
References Cited (Backward Citations)
US3350295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-04 | 1984-05-05 | 1984-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-04 | 1988-05-05 | 1988-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-04 | 1992-05-05 | 1992-11-04 | $7700.00 | Window Closed / Lapsed |