US4007127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bituminous cationic emulsion
Assignee: Mobil Oil AS
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Filing: 1975-01-16
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Granted: 1977-02-08
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Expires: 1995-01-16
Abstract
Abstract The novel cationic emulsions of this invention contain 50 to 75% by weight in water of bitumen, such as asphalt, coal tar and the like or a mixture of different bitumens, and emulsifying system preferably consisting of an N-hydrocarbyl alkylene diamine and a mineral acid, especially hydrochloric acid, and a second amine capable of reacting with the acidic anions present in the water phase, the pH of the emulsion ranging from 1 to 7. The emulsions have utility as binders, paving materials and coating materials, either used alone or combined with granulates. Preparation of these cationic emulsions of controlled pH and improved adhesion to conventional granulates are also disclosed.
Inventors
- 👤 Rene Smadja
- 👤 Louis Houizot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:10
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/0004; B01J13/0021; C; C08; C08K; C08K3/00; C08K3/16; C08K5/00; C08K5/16; C08K5/17
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
174 words
A bituminous cationic emulsion useful as a binder which comprises (1) from about 50 to about 75 percent by weight of said emulsion of a bitumen, (2) water, (3) a mineral acid, (4) from about 0.005 to about 5 percent by weight of said emulsion of a bitumen soluble N-hydrocarbyl diamine having the formula ##STR3## wherein R is hydrogen, alkyl, aryl or aralkyl, R' is alkyl, aryl or aralkyl, the total carbon content of R and R' being from 4 to 30 carbon atoms and n being from 1 to 5, and (5) in amount sufficient to maintain the pH of said emulsion at from 1 to 7, a water soluble amine selected from the group consisting of aliphatic monoamine having from 1 to 9 carbon atoms, alkylene polyamine of the formula H 2 N (C m H 2m NH) r --H, wherein M is 1 to 3 and r is 1 to 3; and an aromatic amine of the formula ##STR4## wherein R" is hydrogen or alkyl of 1 to 3 carbon atoms.
Claim 2
Dependent Claim
174 words
A bituminous cationic emulsion useful as a binder which comprises (1) from about 50 to about 75 percent by weight of said emulsion of a bitumen, (2) water, (3) a mineral acid, (4) from about 0.005 to about 5 percent by weight of said emulsion of a bitumen soluble N-hydrocarbyl diamine having the formula ##STR3## wherein R is hydrogen, alkyl, aryl or aralkyl, R' is alkyl, aryl or aralkyl, the total carbon content of R and R' being from 4 to 30 carbon atoms and n being from 1 to 5, and (5) in amount sufficient to maintain the pH of said emulsion at from 1 to 7, a water soluble amine selected from the group consisting of aliphatic monoamine having from 1 to 9 carbon atoms, alkylene polyamine of the formula H 2 N (C m H 2m NH) r --H, wherein M is 1 to 3 and r is 1 to 3; and an aromatic amine of the formula ##STR4## wherein R" is hydrogen or alkyl of 1 to 3 carbon atoms.
Claim 3
Dependent Claim
12 words
The emulsion of claim 1 wherein said alkylene triamine is diethylene polyamine.
Claim 4
Dependent Claim
12 words
The emulsion of claim 1 wherein said alkylene polyamine is triethylene tetramine.
Claim 5
Dependent Claim
23 words
The emulsion of claim 1 wherein n is 3 and R is hydrogen and R' is alkyl of 10 to 20 carbon atoms.
Claim 6
Dependent Claim
18 words
The emulsion of claim 4 wherein the R' group is alkyl of from 16 to 18 carbon atoms.
Claim 7
Dependent Claim
17 words
The emulsion of claim 1 wherein R" is selected from the group consisting of hydrogen and methyl.
Claim 8
Dependent Claim
12 words
The emulsion of claim 1 wherein the mineral acid is hydrochloric acid.
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) | 1980-02-08 | 1980-08-09 | 1981-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-08 | 1984-08-09 | 1985-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-08 | 1988-08-09 | 1989-02-08 | $7700.00 | Window Closed / Lapsed |