US3617506A
Expired / Lapsed
US
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Hydroconversion process
Assignee: Texaco Inc
•
Filing: 1969-05-21
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Granted: 1971-11-02
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Expires: 1989-05-21
Abstract
Abstract An asphaltenes hydroconversion process for the conversion of asphaltenes to lower boiling hydrocarbons by contacting said asphaltenes with hydrogen in the presence of a pyrolyzed polyacrylonitrile polymer or mixtures thereof.
Inventors
- 👤 Edward L Cole
- 👤 Irving G Schwager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:21
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/40; B01J31/4007; B01J31/02; B01J31/06; B01J31/16; B01J31/1616; B01J31/1625; B01J31/1633; C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/22; B01J2231/00; B01J2231/60; B01J2231/64; B01J2231/641
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
20 words
A process of claim 1 where the acrylonitrile polymer contains at least 90 percent by weight of acrylonitrile monomer units.
Claim 2
Dependent Claim
19 words
A process of claim 2 wherein the acrylonitrile polymer contains at least 95 percent by weight acrylonitrile monomer units.
Claim 3
Dependent Claim
20 words
A procesS of claim 1 wherein the acrylonitrile polymer has a molecular weight of from about 25,000 to about 1,300,000.
Claim 4
Dependent Claim
20 words
A process of claim 3 wherein the acrylonitrile polymer has a molecular weight of from about 25,000 to about 1,300,000.
Claim 5
Dependent Claim
32 words
A process of claim 1 wherein the promoter polymer comprises a pyrolyzed acrylonitrile polymer on a support material selected from the group consisting of alumina, silica-alumina, silica-magnesia, and alumino-silicate and mixtures thereof.
Claim 6
Dependent Claim
23 words
A process of claim 6 wherein the support material is selected from the group consisting of silica alumina, an alumino-silicate and mixtures thereof.
Claim 7
Dependent Claim
29 words
A process of claim 6 wherein the pyrolyzed acrylonitrile polymer is present under the support material on a weight percent basis of from about 0.5 to about 50 percent.
Claim 8
Dependent Claim
29 words
A process of claim 7 wherein the pyrolyzed acrylonitrile polymer is present under the support material on a weight percent basis of from about 0.5 to about 50 percent.
Claim 9
Dependent Claim
21 words
A process of claim 9 wherein the acrylonitrile polymer contains at least about 95 percent by weight of acrylonitrile monomer units.
References Cited (Backward Citations)
US3338854A
Cited
US3394075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |