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US4496474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt emulsions comprising N-aliphatic-1,3-diaminopentane emulsifier and process
Assignee: Akzona Inc
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Filing: 1982-12-20
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Granted: 1985-01-29
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Expires: 2002-12-20
Abstract
Abstract A new compound is disclosed having the formula: <IMAGE> wherein R is a C8 to C22 aliphatic group. The new compound is liquid at ambient temperatures and is useful as an asphalt emulsifier. Also disclosed are asphalt emulsions containing said compound.
Inventors
- 👤 Richard A. Reck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:46
CPC Classifications
C; C08; C08L; C08L95/00; C08L95/005; C08K; C08K5/00; C08K5/16; C08K5/17; C09; C09K; C09K23/00; C09K23/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
26 words
A process for making an asphalt emulsion comprising emulsifying bitumen in water in the presence of an emulsifier of the formula: ##STR14## wherein R is tallow.
Claim 2
Dependent Claim
26 words
A process for making an asphalt emulsion comprising emulsifying bitumen in water in the presence of an emulsifier of the formula: ##STR14## wherein R is tallow.
Claim 3
Dependent Claim
20 words
An asphalt emulsion comprising bitumen emulsified in water, with a liquid emulsifier of the formula: ##STR15## wherein R is tallow.
Claim 4
Dependent Claim
20 words
An asphalt emulsion comprising bitumen emulsified in water, with a liquid emulsifier of the formula: ##STR15## wherein R is tallow.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-29 | 1988-07-30 | 1989-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-29 | 1992-07-30 | 1993-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-29 | 1996-07-30 | 1997-01-29 | $7700.00 | Window Closed / Lapsed |