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US4084382A 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
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Filing: 1976-12-23
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Granted: 1978-04-18
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Expires: 1996-12-23
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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 10:14
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/12; E02B3/128; E02D; E02D31/00

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 199 words
A method for producing a composition useful in forming an enclosure for containing water contaminated with water-soluble industrial waste salts which comprises forming an intimate admixture of dry soil and a sealing effective amount of 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 polyarcylic 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, the weight ratio of water-soluble dispersent to water-soluble polymer being from 6:1-36; and contacting the resulting dry mixture of soil and soil sealant composition with water containing substantially no water-soluble industrial waste salts thereby hydrating the bentonite.
Claim 2
Independent Claim 199 words
A method for producing a composition useful in forming an enclosure for containing water contaminated with water-soluble industrial waste salts which comprises forming an intimate admixture of dry soil and a sealing effective amount of 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 polyarcylic 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, the weight ratio of water-soluble dispersent to water-soluble polymer being from 6:1-36; and contacting the resulting dry mixture of soil and soil sealant composition with water containing substantially no water-soluble industrial waste salts thereby hydrating the bentonite.
Claim 3
Dependent Claim 25 words
A method 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 method according to claim 2 wherein the water-soluble dispersing agent is a water-soluble salt of pyrophosphoric acid.
Claim 5
Dependent Claim 21 words
A method according to claim 1 wherein k is hydrocarbon of from 8 to 22 carbon atoms and X is sodium.
Claim 6
Dependent Claim 15 words
A method according to claim 1 wherein the water-soluble dispersing agent is sodium lauryl sulfate.
Claim 7
Dependent Claim 17 words
A method according to claim 1 wherein the water-soluble dispersing agent is a water-soluble salt of leonardite.

References Cited (Backward Citations)

US2751367A Cited
US2703276A Cited
US2868758A Cited
US3016713A Cited
US3772893A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-04-17 1981-10-17 1982-04-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-04-17 1985-10-17 1986-04-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-04-17 1989-10-17 1990-04-18 $7700.00 Window Closed / Lapsed

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