US4073659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt-gilsonite emulsion
Assignee: Individual
•
Filing: 1976-09-27
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Granted: 1978-02-14
•
Expires: 1996-09-27
Abstract
Abstract An improved asphalt emulsion composition comprises between about 10 and about 33% by weight gilsonite and between about 66 and about 90% by weight asphalt preferably having a penetration below 100, and preferably below about 75 dmm at 77° F, a small amount of emulsifying agent, and water with the ratio of asphalt phase:water being between about 1:1 and 2:1 by weight, respectively.
Inventors
- 👤 Michael V. Burris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:26
CPC Classifications
C; C08; C08L; C08L95/00; C08L95/005
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
120 words
An asphalt emulsion composition comprising: an asphalt phase of between about 10% and about 33% by weight gilsonite and between about 66 and about 90% by weight penetration grade asphalt having a penetration below 100 dmm at 77° F, between about 0.1 and about 2% of a cationic emulsifying agent, and water, the ratio of asphalt phase:water being between about 1:1 and 2:1 by weight, respectively, prepared by a method comprising melting the gilsonite at a temperature of at least about 300° F, independently heating asphalt to a temperature of at least about 300° F, mixing the gilsonite and asphalt while maintaining a mixture temperature of at least 300° F, and thereafter blending asphalt-gilsonite mixture with water and emulsfying agent.
Claim 2
Dependent Claim
120 words
An asphalt emulsion composition comprising: an asphalt phase of between about 10% and about 33% by weight gilsonite and between about 66 and about 90% by weight penetration grade asphalt having a penetration below 100 dmm at 77° F, between about 0.1 and about 2% of a cationic emulsifying agent, and water, the ratio of asphalt phase:water being between about 1:1 and 2:1 by weight, respectively, prepared by a method comprising melting the gilsonite at a temperature of at least about 300° F, independently heating asphalt to a temperature of at least about 300° F, mixing the gilsonite and asphalt while maintaining a mixture temperature of at least 300° F, and thereafter blending asphalt-gilsonite mixture with water and emulsfying agent.
Claim 3
Dependent Claim
22 words
The composition of claim 1 wherein said asphalt has a penetration of between about 40 and about 100 dmm at 77° F.
Claim 4
Dependent Claim
14 words
The composition of claim 1 wherein said emulsifying agent comprises a quaternary ammonium halide.
Claim 5
Dependent Claim
14 words
The composition of claim 1 wherein said emulsifying agent comprises an amine acetate salt.
Claim 6
Dependent Claim
26 words
The composition of claim 3 wherein said salt comprises an alkyl amine salt wherein each said alkyl group has between about 8 and 18 carbon atoms.
Claim 7
Dependent Claim
13 words
The composition of claim 1 wherein said emulsifying agent comprises an alkyl-substituted imidazoline.
Claim 8
Dependent Claim
67 words
An asphalt emulsion composition consisting of: an asphalt phase of between about 10% and about 33% by weight gilsonite and between about 66 and about 90% by weight penetration grade asphalt having a penetration below 100 dmm at 77° F, between about 0.1 and about 2% of a cationic emulsifying agent, and water, the ratio of asphalt phase:water being between about 1:1 and 2:1 by weight, respectively.
Claim 9
Dependent Claim
67 words
An asphalt emulsion composition consisting of: an asphalt phase of between about 10% and about 33% by weight gilsonite and between about 66 and about 90% by weight penetration grade asphalt having a penetration below 100 dmm at 77° F, between about 0.1 and about 2% of a cationic emulsifying agent, and water, the ratio of asphalt phase:water being between about 1:1 and 2:1 by weight, respectively.
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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) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |