US3949560A
Expired / Lapsed
US
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Method and composition for preventing water contaminated with industrial waste from seeping through soil containing said water
Assignee: Amcol International Corp
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Filing: 1974-05-23
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Granted: 1976-04-13
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Expires: 1994-05-23
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
2026-10-28 10:17
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/12; E02B3/128
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
212 words
A method for containing water having dissolved there water-soluble industrial waste salts which comprises: dry mixing soil and a soil sealant composition consisting essentially of (A) bentonite; (B) a water-soluble 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-soulble 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; forming a water-containing enclosure from said mixture of said sealant composition and soil; contacting said enclosure with water-containing substantially no water-soluble industrial waste salts thereby hydrating the bentonite; and contacting said enclosure with the water contaminated with water-soluble industrial waste salts.
Claim 2
Independent Claim
212 words
A method for containing water having dissolved there water-soluble industrial waste salts which comprises: dry mixing soil and a soil sealant composition consisting essentially of (A) bentonite; (B) a water-soluble 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-soulble 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; forming a water-containing enclosure from said mixture of said sealant composition and soil; contacting said enclosure with water-containing substantially no water-soluble industrial waste salts thereby hydrating the bentonite; and contacting said enclosure with the water contaminated with water-soluble industrial waste salts.
Claim 3
Dependent Claim
13 words
a method according to claim 1 wherein the water-soluble polymer is polyacrylic acid.
Claim 4
Independent Claim
16 words
A method according to claim wherein the water-soluble polymer is a water-soluble salt of polyacrylic acid.
Claim 5
Dependent Claim
18 words
A method according to claim 1 wherein the water-soluble dispersing agent is a water-soluble salt of phosphoric acid.
Claim 6
Dependent Claim
18 words
A method according to claim 4 wherein the water-soluble salt of phosphoric acid is an alkaline metal pyrophosphate.
Claim 7
Dependent Claim
14 words
A method according to claim 5 wherein the alkaline metal pyrophosphate is sodium pyrophosphate.
Claim 8
Dependent Claim
21 words
A method according to claim 1 wherein R is hydrocarbon of from 8 to 22 carbon atoms and X is sodium.
Claim 9
Dependent Claim
15 words
A method according to claim 1 wherein the water-soluble dispersing agent is sodium lauryl sulfate.
Claim 10
Dependent Claim
17 words
A method according to claim 1 wherein the water-soluble dispersing agent is a water-soluble salt of leonardite.
Claim 11
Dependent Claim
14 words
A method according to claim 1 wherein the water-soluble dispersing agent is sodium leonardite.
References Cited (Backward Citations)
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US2393173A
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US3016713A
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US3111006A
Cited
US3630937A
Cited
US3774402A
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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) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |