US3852490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic pesticide residue removal from aqueous solutions
Assignee: Chevron USA Inc
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Filing: 1973-03-06
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Granted: 1974-12-03
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Expires: 1993-03-06
Abstract
Abstract Organic pesticide residues are removed from aqueous solutions by treating the aqueous solution, e.g., wine, with a lower alkenevinyl lower alkanoate polymer, e.g., ethylenevinyl acetate.
Inventors
- 👤 G Kohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:14
CPC Classifications
A; A23; A23L; A23L2/00; A23L2/70; B; B01; B01D; B01D15/00; B01J; B01J20/00; B01J20/22; B01J20/26; B01J20/264; C; C02; C02F; C02F1/00; C02F1/28; C02F1/285; C12; C12H; C12H1/00; C12H1/02; C12H1/04; C12H1/0416; C12H1/0424
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
110 words
A PROCESS FOR REMOVING ORGANIC PESTICIDES SELECTED FROM CHLORINAED HYDROCARBONS, HALOALKYL SULFENYLATED CARBOXIMIDE, HALOALKYL SULFENYLATED PHTHALIMIDES, BENZIMIDAZOLE CARBAMATES, THIOUREIDOBENZENES, OXAZOLIDINEDIONES, HYDROCARBYL ARYL METHYLCARBAMATES OR PHOSPHATE ESTERS FROM AQUEOUS SOLUTIONS CONTAINING ABOUT 0.01 PPM TO 1,000 PPM OF SAID PESTICIDES WHICH COMPRISES CONTACTING SAID AQUEOUS SOLUTION WITH FROM 1 TO 200 PERCENT BY WEIGHT, BASED ON WEIGHT OF AQUEOUS SOLUTION, OF A C2-C4 ALKENE-VINYL C2-C4 ALKANOTE POLYMER HAVING A MELT INDEX OF ABOUT 2 TO 500 G/10 MIN., AN INHERENT VISOCITY OF ABOUT 0.5 TO 1.1, A DENSITY OF ABOUT 0.93 TO 0.96 G/CC, AND FROM ABOUT 15 TO 45 PERCENT BY WEIGHT BASED ON WEIGHT OF POLYMER, OF VINYL ALKANOATE.
Claim 2
Dependent Claim
110 words
A PROCESS FOR REMOVING ORGANIC PESTICIDES SELECTED FROM CHLORINAED HYDROCARBONS, HALOALKYL SULFENYLATED CARBOXIMIDE, HALOALKYL SULFENYLATED PHTHALIMIDES, BENZIMIDAZOLE CARBAMATES, THIOUREIDOBENZENES, OXAZOLIDINEDIONES, HYDROCARBYL ARYL METHYLCARBAMATES OR PHOSPHATE ESTERS FROM AQUEOUS SOLUTIONS CONTAINING ABOUT 0.01 PPM TO 1,000 PPM OF SAID PESTICIDES WHICH COMPRISES CONTACTING SAID AQUEOUS SOLUTION WITH FROM 1 TO 200 PERCENT BY WEIGHT, BASED ON WEIGHT OF AQUEOUS SOLUTION, OF A C2-C4 ALKENE-VINYL C2-C4 ALKANOTE POLYMER HAVING A MELT INDEX OF ABOUT 2 TO 500 G/10 MIN., AN INHERENT VISOCITY OF ABOUT 0.5 TO 1.1, A DENSITY OF ABOUT 0.93 TO 0.96 G/CC, AND FROM ABOUT 15 TO 45 PERCENT BY WEIGHT BASED ON WEIGHT OF POLYMER, OF VINYL ALKANOATE.
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein the polymer is ethylene-vinyl acetate.
Claim 4
Dependent Claim
23 words
The process of claim 1 wherein organic pesticides are dissolved in the aqueous solution in amounts of about 0.01 ppm to 50 ppm.
Claim 5
Dependent Claim
62 words
The process of claim 2 wherein organic pesticides are dissolved in the aqueous solution in amounts of about 0.01 ppm to 50 ppm and are selected from the group consisting of octachloro-4,7-methanotetrahydroindane, 1, 1,1-trichloro-2,2-bis-(p-chlorophenyl)ethane, cis-N-(trichloromethylthio)-4-cyclohexene-1, 2-dicarboximide, N-(1,1,2,2-tetrachloroethylthio)-4-cyclohexene-1,2-dicarboximide, N-(trichloromethylthio)phthalimide, methyl-1-(butylcarbamoyl)-2-benzimidazole carbamate, methyl-2-benzimidazole carbamate, 1,2-bis-(3-ethoxycarbonyl-2-thioureido)-benzene, 1,2-bis-(3-methoxycarbonyl-2-thioureido)-benzene, 3-(3, 5-dichlorophenyl)-5,5-dimethyloxazolidinedione-2,4, 1-naphthyl methylcarbamate, m-(1-methylbutylphenyl methylcarbamate, m-(1-ethylpropyl)-phenyl methyl carbamate, 0,0-dimethyl phosphorodithioate of diethyl mercaptosuccinaTe and 0,0-dimethyl 0-p-nitrophenyl phosphorothioate.
Claim 6
Dependent Claim
15 words
The process of claim 4 wherein the aqueous alcoholic solution is a fermented fruit juice.
Claim 7
Dependent Claim
12 words
The process of claim 4 wherein the aqueous alcoholic solution is wine.
Claim 8
Dependent Claim
13 words
The process of claim 1 wherein the aqueous solution is a fruit juice.
Claim 9
Dependent Claim
12 words
The process of claim 7 wherein the fruit juice is grape juice.
Claim 10
Dependent Claim
12 words
The process of claim 2 wherein the organic pesticide residue is 1,1,1-trichloro-2,2-bis-(p-chlorophenyl)ethane.
Claim 11
Dependent Claim
12 words
The process of claim 2 wherein the organic pesticide residue is cis-N-(trichloromethylthio)-4-cyclohexene-1,2-dicarboximide.
Claim 12
Dependent Claim
12 words
The process of claim 2 wherein the organic pesticide residue is 3-(3,5-dichlorophenyl)-5,5-dimethyloxazolidinedione-2,4.
Claim 13
Dependent Claim
12 words
The process of claim 2 wherein the organic pesticide residue is N-(1,1,2,2-tetrachloroethylthio)-4-cyclohexene-1,2-dicarboximide.
Claim 14
Dependent Claim
27 words
The process of claim 2 wherein the polymer contains a minor amount of vinyl acetic and has an acid number in the range of 4 to 8.
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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |