Patent US3951676A successfully refreshed from Google Patents.
US3951676A
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Cationic bituminous emulsions forming residuum having improved temperature characteristics
Assignee: Chevron USA Inc
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Filing: 1974-09-05
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Granted: 1976-04-20
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Expires: 1994-09-05
Abstract
Abstract Stable, modified cationic bituminous emulsions are provided which form residuums having improved temperature susceptibility characteristics by combining with the base emulsion a tallate salt of a metallic polyvalent cation selected from the group consisting of tin, magnesium, copper, aluminum and iron.
Inventors
- 👤 Edward G. Elste, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:34
CPC Classifications
C; C08; C08L; C08L95/00; C08L95/005
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
139 words
A stable, modified cationic oil-in-water bituminous emulsion comprised of: 1. from 95-99 parts by weight of a cationic bituminous emulsion containing a. from 50-80% parts by weight of a bitumen having a penetration at 77°F. of from about 60-150, b. from about 0.1-1% of a cationic emulsifier, c. a minor amount of acid sufficient to give the emulsion a pH of from about 4 to about 6, d. and the balance to make 100% by weight being water, and 2. from about 1 to about 5 parts by weight of a tallate salt of a metallic polyvalent cation selected from the group consisting of tin, magnesium, copper, aluminum and iron, wherein the weight ratio of said cation to tall oil is from 1:5-35 and with the proviso that the total parts by weight of said modified emulsion is 100.
Claim 2
Dependent Claim
139 words
A stable, modified cationic oil-in-water bituminous emulsion comprised of: 1. from 95-99 parts by weight of a cationic bituminous emulsion containing a. from 50-80% parts by weight of a bitumen having a penetration at 77°F. of from about 60-150, b. from about 0.1-1% of a cationic emulsifier, c. a minor amount of acid sufficient to give the emulsion a pH of from about 4 to about 6, d. and the balance to make 100% by weight being water, and 2. from about 1 to about 5 parts by weight of a tallate salt of a metallic polyvalent cation selected from the group consisting of tin, magnesium, copper, aluminum and iron, wherein the weight ratio of said cation to tall oil is from 1:5-35 and with the proviso that the total parts by weight of said modified emulsion is 100.
Claim 3
Dependent Claim
22 words
The said modified emulsion of claim 1 wherein said tallate salt is present in an amount of from 1.5-3 parts by weight.
Claim 4
Dependent Claim
14 words
The said modified emulsion of claim 2 wherein said metallic polyvalent cation is iron.
Claim 5
Dependent Claim
14 words
The said modified emulsion of claim 2 wherein said metallic polyvalent cation is tin.
Claim 6
Dependent Claim
89 words
The said modified bituminous emulsion of claim 1 wherein said cationic bituminous emulsion contains 68% by weight bitumen, said acid is hydrochloric acid, said tallate salt is derived from a tall oil having a fatty acid content of about 86% by weight, unsaponifiables of about 14% by weight, and acid number of 178, and a saponification number of 183, said polyvalent cation is stannic and wherein the ratio of said cation to said tall oil is 1.6:20 and said tallate salt is present in an amount of 1.25 parts.
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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) | 1979-04-20 | 1979-10-20 | 1980-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-20 | 1983-10-20 | 1984-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-20 | 1987-10-20 | 1988-04-20 | $7700.00 | Window Closed / Lapsed |