US4287111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions useful for consolidation of mining deposits
Assignee: Rhone Poulenc Industries SA
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Filing: 1978-11-21
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Granted: 1981-09-01
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Expires: 1998-11-21
Abstract
Abstract Mining deposits, e.g., coal fields, are consolidated by injecting therein a composition which includes (a) an aqueous dispersion of a vinyl polymer, (b) at least one water-soluble acrylic monomer, and (c) a curing amount of an in situ polymerization catalyst for the acrylic monomer(s) (b); and thence permitting the composition to cure, in situ, into an adherent, consolidating gel matrix for the loose deposit.
Inventors
- 👤 Jean-Philippe Rieux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:11
CPC Classifications
E; E21; E21D; E21D9/00; E21D9/001; E21D9/002; C; C04; C04B; C04B26/00; C04B26/02; C04B26/04; C04B26/06; C09; C09K; C09K17/00; C09K17/14; C09K17/18; C09K17/20; C09K17/22
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
84 words
A composition of matter consisting essentially of (a) from about 75 to 95% by weight of an aqueous dispersion of a vinyl polymer, (b) from about 5 to 25% by weight of at least one water-soluble acrylic monomer, both percentages being based upon the total weight of the components (a) and (b), (c) a curing amount of a polymerization catalyst for the acrylic monomer (b), and (d) up to 5% by weight, based upon the weight of acrylic monomer (b), of a cross-linking monomer.
Claim 2
Dependent Claim
84 words
A composition of matter consisting essentially of (a) from about 75 to 95% by weight of an aqueous dispersion of a vinyl polymer, (b) from about 5 to 25% by weight of at least one water-soluble acrylic monomer, both percentages being based upon the total weight of the components (a) and (b), (c) a curing amount of a polymerization catalyst for the acrylic monomer (b), and (d) up to 5% by weight, based upon the weight of acrylic monomer (b), of a cross-linking monomer.
Claim 3
Dependent Claim
83 words
A composition of matter comprising (a) from about 75 to 95% by weight of an aqueous dispersion of a vinyl polymer, (b) from about 5 to 25% by weight of at least one water-soluble acrylic monomer, both percentages being based upon the total weight of the components (a) and (b), (c) a curing amount of a polymerization catalyst for the acrylic monomer (b), and (d) up to about 5% by weight, based upon the weight of acrylic monomer (b), of a cross-linking monomer.
Claim 4
Dependent Claim
83 words
A composition of matter comprising (a) from about 75 to 95% by weight of an aqueous dispersion of a vinyl polymer, (b) from about 5 to 25% by weight of at least one water-soluble acrylic monomer, both percentages being based upon the total weight of the components (a) and (b), (c) a curing amount of a polymerization catalyst for the acrylic monomer (b), and (d) up to about 5% by weight, based upon the weight of acrylic monomer (b), of a cross-linking monomer.
Claim 5
Dependent Claim
63 words
The composition of matter as defined by claim 2, the vinyl polymer comprising the aqueous dispersion (a) being selected from the group consisting of polyethylene, polypropylene, polyisobutylene, polybutadiene, polyisoprene, polystyrene, polychlorobutadiene, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, polyvinyl butyrate, polyvinyl benzoate, polyacrylonitrile, polyesters of acrylic or methacrylic acid with a saturated aliphatic or cycloaliphatic alcohol having up to 8 carbons, and polymaleic anhydride.
Claim 6
Dependent Claim
47 words
The composition of matter as defined by claim 2, the vinyl polymer comprising the aqueous dispersion (a) being a copolymer of a vinyl aromatic monomer and a comonomer selected from the group consisting of an alkyl acrylate, an alkyl methacrylate, a cycloalkyl acrylate and a cycloalkyl methacrylate.
Claim 7
Dependent Claim
22 words
The composition of matter as defined by claim 4, the vinyl polymer comprising the aqueous dispersion (a) being a styrene/alkyl acrylate copolymer.
Claim 8
Dependent Claim
27 words
The composition of matter as defined by claim 2, the acrylic monomer (b) being selected from the group consisting of acrylic acid, acrylamide, N-alkylacrylamide, N-methylolacrylamide and N-methylolmethacrylamide.
Claim 9
Dependent Claim
15 words
The composition of matter as defined in claim 6, the acrylic monomer (b) being acrylamide.
Claim 10
Dependent Claim
42 words
The composition of matter as defined by claim 2, further comprising a member selected from the group consisting of a solidification retarder, a pH modifier, a filler, a pigment, an emulsifying agent, a plasticizer, a thickener, an anti-gelling agent, and admixtures thereof.
Claim 11
Dependent Claim
17 words
The composition of matter as defined by claim 2, having a pH of from 5 to 9.
References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-31 | 1985-03-02 | 1985-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-31 | 1989-03-02 | 1989-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-31 | 1993-03-02 | 1993-09-01 | $7700.00 | Window Closed / Lapsed |