US4459157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt composition
Assignee: LION OIL COMPANY (FORMERLY XYZ INC) EL DORADO AK AN AK CORP
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Filing: 1982-07-19
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Granted: 1984-07-10
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Expires: 2002-07-19
Abstract
Abstract An asphalt blend in which a butadiene-styrene elastomeric block polymer can easily be dispersed at between about 325° F. and about 400° F. and, after cooling, forms a stable material useful as a roofing composition and having a flash point of greater than about 450° F., said blend being composed of a propane extracted asphalt and from about 5 weight % to about 45 weight % of a fluid bed catalytic petroleum cracker bottoms oil comprising a major proportion of oils boiling above 700° F. and, optionally, a minor proportion of oils between about 350° F. and 700° F.
Inventors
- 👤 Russell E. Koons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:02
CPC Classifications
C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
138 words
An asphalt blend in which a butadiene-styrene elastomeric block polymer can easily be dispersed at between about 325° F. and about 400° F. and, after cooling, forms a stable material useful as a roofing composition and having a flash point of greater than about 450° F., said blend consisting essentially of a propane extracted asphalt, said propane extracted asphalt having been prepared by mixing an asphaltic petroleum flux with propane, with or without other solvents, and allowing the mixture to separate into layers and collecting the propane extracted asphalt from the bottom layer, and from about 5 weight % to about 45 weight % of a fluid bed catalytic petroleum cracker bottoms oil comprising a major proportion of oils boiling above 700° F. and, optionally, a minor proportion of oils boiling between about 350° F. and 700° F.
Claim 2
Dependent Claim
138 words
An asphalt blend in which a butadiene-styrene elastomeric block polymer can easily be dispersed at between about 325° F. and about 400° F. and, after cooling, forms a stable material useful as a roofing composition and having a flash point of greater than about 450° F., said blend consisting essentially of a propane extracted asphalt, said propane extracted asphalt having been prepared by mixing an asphaltic petroleum flux with propane, with or without other solvents, and allowing the mixture to separate into layers and collecting the propane extracted asphalt from the bottom layer, and from about 5 weight % to about 45 weight % of a fluid bed catalytic petroleum cracker bottoms oil comprising a major proportion of oils boiling above 700° F. and, optionally, a minor proportion of oils boiling between about 350° F. and 700° F.
Claim 3
Dependent Claim
22 words
An asphalt blend according to claim 1 wherein said asphalt blend has an asphaltene content of less than about 10 weight %.
Claim 4
Dependent Claim
20 words
An asphalt blend according to claim 2 wherein said blend has a flash point of greater than about 510° F.
Claim 5
Dependent Claim
32 words
An asphalt blend according to claim 3 where the fluid bed catalytic petroleum cracker bottoms oil is present in an amount of from about 5 wt. % to about 25 wt. %.
Claim 6
Dependent Claim
18 words
An asphalt blend according to claim 4 having a penetration value, at 77° F., of greater than 75.
Claim 7
Dependent Claim
24 words
An asphalt blend according to claim 5 wherein the propane extracted asphalt has a penetration value, at 77° F., of less than about 60.
Claim 8
Dependent Claim
34 words
An asphalt blend according to claim 5 wherein the propane extracted asphalt is a mixture of propane extracted asphalts, said mixture having a penetration value, at 77° F., of between about 15 and 50.
Claim 9
Dependent Claim
28 words
An asphalt blend according to claim 1 wherein said fluid bed catalytic petroleum cracker bottoms has an initial boiling point of between about 700° F. and 800° F.
Claim 10
Dependent Claim
25 words
An asphalt blend according to claim 1 wherein said fluid bed catalytic cracker petroleum bottoms oil has an initial boiling point of about 800° F.
References Cited (Backward Citations)
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Cited
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US4207117A
Cited
US4139397A
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-10 | 1988-01-09 | 1988-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-10 | 1992-01-09 | 1992-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-10 | 1996-01-09 | 1996-07-10 | $7700.00 | Window Closed / Lapsed |