US3596469A
Expired / Lapsed
US
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Process for the stabilization of soil
Assignee: Mitsubishi Chemical Corp
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Filing: 1968-11-29
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Granted: 1971-08-03
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Expires: 1988-11-29
Abstract
Abstract In the stabilization of soil by injecting into the soil a mixture comprising a water-soluble divinyl compound, a watersoluble vinyl compound and a redox catalyst, a mixture of an amine and a reducing metal complex is used as the reducing component of the redox catalyst, whereby the soil can be made particularly great in strength in a short period of time.
Inventors
- 👤 Einosuke Higashimura
- 👤 Shunsuke Tazawa
- 👤 Eiichi Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 00:55
CPC Classifications
C; C09; C09K; C09K17/00; C09K17/14; C09K17/18; C09K17/20; C08; C08F; C08F36/00; C08F36/02; C08F36/20; C08F4/00; C08F4/28
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
21 words
A process according to claim 1, wherein the reducing metal complex is a complex of a reducing metal with an oxyacid.
Claim 2
Dependent Claim
23 words
A process according to claim 2, wherein the oxyacid is an acid selected from the group consisting of tartaric acid and citric acid.
Claim 3
Dependent Claim
34 words
A process according to claim 1, wherein the reducing metal complex is a complex of a reducing metal with a complexing agent selected from the group consisting of nitrilotriacetic acid and water-soluble salts thereof.
Claim 4
Dependent Claim
43 words
A process according to claim 1, wherein the reducing metal complex is a complex of a reducing metal with a complexing agent selected from the group consisting of succinic acid, oxalic acid, ammonium oxalate, acetylacetone, ethylenediaminetetraacetic acid and water-soluble salts of ethylenediaminetetraacetic acid.
Claim 5
Dependent Claim
43 words
A process according to claim 1, wherein the reducing metal complex is a complex of a ferrous ion and a complexing agent, said complexing agent being capable of forming with said ferrous ion a water soluble complex stable under the basicity of amine.
Claim 6
Dependent Claim
57 words
A process according to claim 1, wherein the reducing metal complex is a complex of a metal ion selected from the group consisting of Sn, Mn, Cu, Ni, Pb, Ag and Co and a complex agent, said complexing agent being capable of forming with said metal ion a water soluble complex stable under the basicity of amine.
Claim 7
Dependent Claim
110 words
A process for the stabilization of soil which comprises injecting into the soil a mixture comprising at least one water-soluble divinyl compound, at least one water-soluble vinyl compound copolymerizable therewith and a redox catalyst, and polymerizing and solidifying the mixture in the soIl, characterized in that a catalytic amount of a mixture comprising 0.001-20 percent by weight of amine and about 0.01-20 percent by weight of a reducing metal ion and further 0.01-20 percent by weight of a complexing agent, all weights being based on the polymeric component, said complexing agent converting said metal ion to a complex which is water soluble and stable under the basicity of the amine.
Claim 8
Dependent Claim
14 words
A process according to claim 8, wherein the reducing metal ion is ferrous ion.
Claim 9
Dependent Claim
31 words
A process according to claim 8, wherein the reducing metal ion is a metal ion selected from the group consisting of Sn(II), Mn(II), Cu(II), Zn(II), Ni(II), Pb(II), Ag(I) and Co(II) ions.
Claim 10
Dependent Claim
13 words
A process according to claim 8, wherein the complexing agent is an oxyacid.
Claim 11
Dependent Claim
20 words
A process according to claim 11, wherein the oxyacid is selected from the group consisting of tartaric and citric acids.
Claim 12
Dependent Claim
25 words
A process according to claim 8, wherein the complexing agent is one member selected from the group consisting of nitrilotriacetic acid and water-soluble salts thereof.
References Cited (Backward Citations)
US2865177A
Cited
US2801984A
Cited
US3021298A
Cited
US3210310A
Cited
US3212577A
Cited
US3247900A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |