US4021402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and composition for preventing water contaminated with industrial waste seeping through soil containing said water
Assignee: Amcol International Corp
•
Filing: 1975-08-18
•
Granted: 1977-05-03
•
Expires: 1995-08-18
Abstract
Abstract There is disclosed a method for containing water having a high concentration of water-soluble industrial waste which, when in contact with bentonite, disintegrates the bentonite thereby allowing seepage of water through soil containing said water which comprises intimately admixing with said soil a soil sealant composition consisting essentially of bentonite, a water-soluble dispersing agent, and a water-soluble polymer selected from the group consisting of polyacrylic acid, water-soluble salts of polyacrylic acid, hydrolyzed polyacrylonitrile, polyvinyl acetate, polyvinyl alcohol, copolymers of the foregoing, and a copolymer of acrylic acid and maleic anhydride, the amount of water-soluble polymer being from 0.1% to 3.0%, by weight, and the amount of water-soluble dispersent being from 0.1% to 3.0%, by weight, the weight ratio of water-soluble dispersent to water-soluble polymer being from 6:1-36, intimately admixing an effective amount of said soil sealant composition with soil, forming a water-containing enclosure from said mixture of soil sealant composition and soil, and contacting said enclosure with water containing substantially no industrial waste compounds thereby hydrating the bentonite.
Inventors
- 👤 Arthur G. Clem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:20
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/12; E02B3/128
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
205 words
A composition for forming a water-containing enclosure which composition, after being contacted with water containing substantially no water-soluble industrial waste salts will prevent seepage of water contaminated with water-soluble industrial waste salts, said composition consisting essentially of an intimate admixture of soil and a sealing effective amount of a soil-sealant composition consisting essentially of an intimate dry admixture of (A) unhydrated bentonite; (B) a water-soluble dispersing agent selected from the group consisting of a water-soluble salt of phosphoric acid, a water-soluble sulfate of the formula ROSO 3 X where R is hydrocarbon of from 8 to 32 carbon atoms, and X is a member selected from the group consisting of an alkaline metal or ammonium, and a water-soluble salt of leonardite; and (C) a water-soluble polymer selected from the group consisting of polyacrylic acid, water-soluble salts of polyacrylic acid, hydrolyzed poly-acrylonitrile, polyvinyl acetate, polyvinyl alcohol, copolymers of the foregoing, and a copolymer of acrylic acid and maleic anhydride, the amount of water-soluble polymer in said soil sealant composition being from 0.1% to 3.0%, by weight, and the amount of water-soluble dispersent in said soil sealant composition being from 0.1% to 3.0%, by weight, the weight ratio of water-soluble dispersent to water-soluble polymer being from 6:1-36.
Claim 2
Dependent Claim
205 words
A composition for forming a water-containing enclosure which composition, after being contacted with water containing substantially no water-soluble industrial waste salts will prevent seepage of water contaminated with water-soluble industrial waste salts, said composition consisting essentially of an intimate admixture of soil and a sealing effective amount of a soil-sealant composition consisting essentially of an intimate dry admixture of (A) unhydrated bentonite; (B) a water-soluble dispersing agent selected from the group consisting of a water-soluble salt of phosphoric acid, a water-soluble sulfate of the formula ROSO 3 X where R is hydrocarbon of from 8 to 32 carbon atoms, and X is a member selected from the group consisting of an alkaline metal or ammonium, and a water-soluble salt of leonardite; and (C) a water-soluble polymer selected from the group consisting of polyacrylic acid, water-soluble salts of polyacrylic acid, hydrolyzed poly-acrylonitrile, polyvinyl acetate, polyvinyl alcohol, copolymers of the foregoing, and a copolymer of acrylic acid and maleic anhydride, the amount of water-soluble polymer in said soil sealant composition being from 0.1% to 3.0%, by weight, and the amount of water-soluble dispersent in said soil sealant composition being from 0.1% to 3.0%, by weight, the weight ratio of water-soluble dispersent to water-soluble polymer being from 6:1-36.
Claim 3
Dependent Claim
25 words
A composition according to claim 1 wherein the water-soluble polymer is selected from the group consisting of polyacrylic acid and water-soluble salts of polyacrylic acid.
Claim 4
Dependent Claim
18 words
A composition according to claim 2 wherein, the water-soluble dispersing agent is a water-soluble salt of phosphoric acid.
Claim 5
Dependent Claim
21 words
A composition according to claim 3 wherein the water-soluble salt of phosphoric acid is an alkaline metal salt of pyrophosphoric acid.
Claim 6
Dependent Claim
14 words
A composition according to claim 1 wherein the water-soluble dispersing agent is sodium pyrophosphate.
Claim 7
Dependent Claim
21 words
A composition according to claim 1 wherein R is hydrocarbon of from 8 to 22 carbon atoms and X is sodium.
Claim 8
Dependent Claim
15 words
A composition according to claim 1 wherein the water-soluble dispersing agent is sodium lauryl sulfate.
Claim 9
Dependent Claim
17 words
A composition according to claim 1 wherein the water-soluble dispersing agent is a water-soluble salt of leonardite.
Claim 10
Dependent Claim
14 words
A composition according to claim 1 wherein the water-soluble dispersing agent is sodium leonardite.
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) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |