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US4298397A
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Asphalt-sulfur emulsion composition
Assignee: Individual
•
Filing: 1980-04-14
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Granted: 1981-11-03
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Expires: 2000-04-14
Abstract
Abstract In a stockpile asphalt emulsion composition an improved asphalt phase comprises 50-98% of paving grade asphalt, 1-10% added sulfur, and 1-35% liquid hydrocarbon.
Inventors
- 👤 Michael V. Burris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:48
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/06; C08L; C08L95/00; C08L95/005
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
94 words
An asphalt-emulsion composition comprising: an asphalt phase consisting essentially of between about 50 and about 98% paving grade asphalt, between about 1 and about 10% added sulfur over and above the amount of any residual sulfur in said asphalt, and between about 1 and about 35% of a liquid petroleum hydrocarbon having a boiling point above about 200° F., and a water phase having between about 0.05 and about 10.0%, by weight, based on the total composition, of an emulsifier selected from the group consisting of cationic, anionic, and nonionic emulsifiers and mixtures thereof.
Claim 2
Dependent Claim
94 words
An asphalt-emulsion composition comprising: an asphalt phase consisting essentially of between about 50 and about 98% paving grade asphalt, between about 1 and about 10% added sulfur over and above the amount of any residual sulfur in said asphalt, and between about 1 and about 35% of a liquid petroleum hydrocarbon having a boiling point above about 200° F., and a water phase having between about 0.05 and about 10.0%, by weight, based on the total composition, of an emulsifier selected from the group consisting of cationic, anionic, and nonionic emulsifiers and mixtures thereof.
Claim 3
Dependent Claim
17 words
The composition of claim 1 wherein said petroleum hydrocarbon has a boiling point above about 350° F.
Claim 4
Dependent Claim
24 words
The composition of claim 2 wherein said liquid petroleum hydrocarbon is selected from the group consisting of gas oil, fuel oil, and fluxing oil.
Claim 5
Dependent Claim
20 words
The composition of claim 3 wherein said fluxing oil comprises an aromatic hydrocarbon having at least 55% aromatics, by weight.
Claim 6
Dependent Claim
19 words
The composition of claim 1 or 2 containing between about 2 and about 20% of said liquid petroleum hydrocarbon.
Claim 7
Dependent Claim
13 words
The composition of claim 1 wherein said emulsifier includes a surface active clay.
Claim 8
Dependent Claim
52 words
An asphalt composition consisting essentially of a paving grade asphalt, between about 1 and about 10% added sulfur over and above the amount of any residual sulfur in said asphalt, and between about 1 and about 35%, by weight, of a liquid petroleum hydrocarbon having a boiling point above about 200° F.
Claim 9
Dependent Claim
52 words
An asphalt composition consisting essentially of a paving grade asphalt, between about 1 and about 10% added sulfur over and above the amount of any residual sulfur in said asphalt, and between about 1 and about 35%, by weight, of a liquid petroleum hydrocarbon having a boiling point above about 200° F.
Claim 10
Dependent Claim
18 words
The composition of claim 7 wherein said liquid petroleum hydrocarbon has a boiling point above about 350° F.
Claim 11
Dependent Claim
22 words
The composition of claim 8 wherein said liquid petroleum hydrocarbon is present in an amount of between about 2 and about 20%.
Claim 12
Dependent Claim
14 words
The composition of claim 1 or 7 wherein said added sulfur comprises elemental sulfur.
Claim 13
Dependent Claim
24 words
The composition of claim 1 or 7 wherein said added sulfur comprises a modified sulfur consisting of a reaction product of sulfur and dicyclopentadiene.
Claim 14
Independent Claim
70 words
A method of improving the penetration of an asphalt composition consisting essentially of a paving grade asphalt comprising adding thereto between about 1 and about 10% sulfur, and between about 1 and about 35% of a liquid petroleum hydrocarbon having a boiling point above about 200° F. said amounts of sulfur and petroleum hydrocarbon added being over and above any amount thereof present in said asphalt prior to said addition.
Claim 15
Independent Claim
70 words
A method of improving the penetration of an asphalt composition consisting essentially of a paving grade asphalt comprising adding thereto between about 1 and about 10% sulfur, and between about 1 and about 35% of a liquid petroleum hydrocarbon having a boiling point above about 200° F. said amounts of sulfur and petroleum hydrocarbon added being over and above any amount thereof present in said asphalt prior to said addition.
Claim 16
Dependent Claim
39 words
The method of claim 12 wherein the asphalt and sulfur are separately heated to above the melting point of said sulfur and below 300° F., combining and blending the heated materials, and adding and mixing said liquid petroleum hydrocarbon.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-02 | 1985-05-04 | 1985-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-02 | 1989-05-04 | 1989-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-02 | 1993-05-04 | 1993-11-03 | $7700.00 | Window Closed / Lapsed |