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US4338136A
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Method of making fast-breaking bituminous emulsions
Assignee: APC-AZOTE ET PRODUITS CHIMIQUES SA
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Filing: 1979-03-15
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Granted: 1982-07-06
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Expires: 1999-03-15
Abstract
Abstract Fast-breaking bituminous emulsions are prepared by using a liquid emulsifying agent obtained by condensation at a temperature of 160°-180° C. of diethylenetriamine and a C 12-18 fatty acid having an iodine value of at least 25, followed by at least partial cyclization of the condensation product at a temperature between approximately 190° and 240° C., the initial molar ratio between the diethylenetriamine and the fatty acid being at least 5 to 1, and the end product having a total amine index of at least 5.6 and optionally containing up to 10% free diethylenetriamine.
Inventors
- 👤 Pierre Goullet
- 👤 Pierre Scotte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:02
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/20
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
104 words
In a fast-breaking bituminous emulsion which comprises water, a bituminous hydrocarbon binding agent and an emulsifying agent, the improvement wherein said emulsifying agent is a liquid emulsifying agent prepared by a process which comprises condensing diethylenetriamine and a C 12-18 fatty acid having an iodine value of at least 25, at a temperature between 160° and 180° C., followed by at least partially cyclizing the condensation product at a temperature between about 190° and 240° C.; the initial molar ratio between the diethylenetriamine and the fatty acid being at least 5:1 and the final product having a total amine index of at least 5.6.
Claim 2
Dependent Claim
104 words
In a fast-breaking bituminous emulsion which comprises water, a bituminous hydrocarbon binding agent and an emulsifying agent, the improvement wherein said emulsifying agent is a liquid emulsifying agent prepared by a process which comprises condensing diethylenetriamine and a C 12-18 fatty acid having an iodine value of at least 25, at a temperature between 160° and 180° C., followed by at least partially cyclizing the condensation product at a temperature between about 190° and 240° C.; the initial molar ratio between the diethylenetriamine and the fatty acid being at least 5:1 and the final product having a total amine index of at least 5.6.
Claim 3
Dependent Claim
19 words
The emulsion of claim 1 wherein the initial molar ratio between the diethylenetriamine and the fatty acid is 5.5-7:1.
Claim 4
Dependent Claim
26 words
The emulsion of claim 1 wherein up to 10% of free diethylenetriamine, triethylenetetramine or a mixture thereof is added to the product of the cyclization reaction.
Claim 5
Dependent Claim
27 words
The emulsion of claim 1 wherein the condensation reaction is run for at least 5 hours and the cyclization reaction is run for at least 5 hours.
Claim 6
Dependent Claim
23 words
The emulsion of claim 1 wherein the cyclization is stopped when the total amine index of the reaction product becomes lower than 6.0.
Claim 7
Dependent Claim
21 words
The emulsion of claim 3 wherein the final total amine index of the reaction mixture is adjusted by addition of diethylenetriamine.
Claim 8
Dependent Claim
13 words
The emulsion of claim 1 wherein the fatty acid has 18 carbon atoms.
Claim 9
Dependent Claim
16 words
The emulsion of claim 7 wherein the fatty acid has an iodine value higher than 40.
Claim 10
Dependent Claim
12 words
The emulsion of claim 1 wherein the hydrocarbon binding agent is bitumen.
Claim 11
Dependent Claim
16 words
The emulsion of claim 1 wherein the final product has a total amine index of 5.8-6.2.
Claim 12
Dependent Claim
16 words
The emulsion of claim 1 wherein the final product has a total amine index of 5.8-6.0.
Claim 13
Dependent Claim
23 words
The emulsion of claim 1, comprising about 1.5-5 kg/metric ton of emulsifying agent, 50-30% of water and 50-70% of bituminous hydrocarbon binding agent.
Claim 14
Dependent Claim
10 words
A composition which comprises the set emulsion of claim 1.
Claim 15
Dependent Claim
11 words
The composition of claim 13 which further comprises a mineral aggregate.
Claim 16
Independent Claim
120 words
A method of preparing a fast-breaking bituminous emulsion at ambient temperature which consists essentially of agitating at ambient temperature water having an acidic pH, bituminous hydrocarbon binding agent, and an emulsifying agent which is liquid at room temperature, wherein said liquid emulsifying agent is prepared by a process which comprises condensing diethylenetriamine and a C 12-18 fatty acid having an iodine value of at least 25, at a temperature between 160° and 180° C., followed by at least partially cyclizing the condensation product at a temperature between about 190° and 240° C.; the initial molar ratio between the diethylenetriamine and the fatty acid being at least 5:1 and the final product having a total amine index of at least 5.6.
Claim 17
Independent Claim
120 words
A method of preparing a fast-breaking bituminous emulsion at ambient temperature which consists essentially of agitating at ambient temperature water having an acidic pH, bituminous hydrocarbon binding agent, and an emulsifying agent which is liquid at room temperature, wherein said liquid emulsifying agent is prepared by a process which comprises condensing diethylenetriamine and a C 12-18 fatty acid having an iodine value of at least 25, at a temperature between 160° and 180° C., followed by at least partially cyclizing the condensation product at a temperature between about 190° and 240° C.; the initial molar ratio between the diethylenetriamine and the fatty acid being at least 5:1 and the final product having a total amine index of at least 5.6.
Claim 18
Dependent Claim
26 words
The method of claim 15, wherein said emulsion contains about 1.5-5 kg/metric ton of emulsifying agent, 50-30% of water and 50-70% of bituminous hydrocarbon binding agent.
Claim 19
Dependent Claim
60 words
In a method of providing a ground surface containing bituminous hydrocarbon binding agent and mineral aggregate, which method comprises the steps of spreading onto the ground to be surfaced a fast-breaking bituminous emulsion comprising said bituminous hydrocarbon binding agent, water and an emulsifying agent; gravelling; and rolling, the improvement which comprises employing as said emulsion the emulsion of claim 1.
Claim 20
Dependent Claim
64 words
In a method of providing a ground surface containing bituminous hydrocarbon binding agent and mineral aggregate, which method comprises the steps of spreading onto the ground to be surfaced a fast-breaking bituminous emulsion comprising said bituminous hydrocarbon binding agent, water and an emulsifying agent; gravelling; and rolling, the improvement which comprises employing as said emulsion an emulsion prepared by the method of claim 15.
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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) | 1985-07-05 | 1986-01-04 | 1986-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-05 | 1990-01-04 | 1990-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-05 | 1994-01-04 | 1994-07-06 | $7700.00 | Window Closed / Lapsed |