US3867330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brines containing water-soluble anionic vinyl addition polymer and water soluble cationic polymer
Assignee: ChampionX LLC
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Filing: 1973-07-30
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Granted: 1975-02-18
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Expires: 1993-07-30
Abstract
Abstract Novel compositions are afforded when a stable liquid dispersion of a water-soluble anionic vinyl addition polymer and a watersoluble cationic polymer are dispersed into an aqueous brine.
Inventors
- 👤 Alvin J Frisque
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:05
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08L; C08L79/00; C08L79/02; C08J2300/00; C08J2300/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
133 words
AN AQUEOUS BRINE CONSISTING ESSENTIALLY OF FROM 0.1 TO 50% BY WEIGHT OF A STABLE LIQUID DISPERSION OF: A. A POLYMERIC LATEX COMPOSED OF A WATER-IN-OIL EMULSION WHICH CONTAINS DISPERSED THEREIN A FINELY DIVIDED WATERSOLUBLE ANIONIC VINYL ADDITION POLYMER, SAID POLYMER BEING SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF ACRYLAMIDE POLYMERS AND ACRYLIC ACID POLYMERS, AND SAID POLYMERIC LATEX HAVING UNIFORMLY DISTRIBUTED THEREIN THROUGHOUT; B. A WATER-SOLUBLE CATIONIC POLYMER SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF ALKYLENE POLYAMINE/EPICHLOROHYDRIN AND ETHYLENE DICHLORIDE/AMMONIA POLYMERS WITH THE WEIGHT RATIO OF (A):(B) BEING WITHIN THE RANGE OF 1:10 TO 10:1 AND THE TOTAL AMOUNT OF (A)+(B) PRESENT WITHIN SAID DISPERSION BEING WITHIN THE RANGE OF FROM 0.001 TO 75% BY WEIGHT, SAID DISPERSION BEING UNIFORMLY DISPERSED THERETHROUGHOUT SAID BRINE.
Claim 2
Dependent Claim
133 words
AN AQUEOUS BRINE CONSISTING ESSENTIALLY OF FROM 0.1 TO 50% BY WEIGHT OF A STABLE LIQUID DISPERSION OF: A. A POLYMERIC LATEX COMPOSED OF A WATER-IN-OIL EMULSION WHICH CONTAINS DISPERSED THEREIN A FINELY DIVIDED WATERSOLUBLE ANIONIC VINYL ADDITION POLYMER, SAID POLYMER BEING SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF ACRYLAMIDE POLYMERS AND ACRYLIC ACID POLYMERS, AND SAID POLYMERIC LATEX HAVING UNIFORMLY DISTRIBUTED THEREIN THROUGHOUT; B. A WATER-SOLUBLE CATIONIC POLYMER SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF ALKYLENE POLYAMINE/EPICHLOROHYDRIN AND ETHYLENE DICHLORIDE/AMMONIA POLYMERS WITH THE WEIGHT RATIO OF (A):(B) BEING WITHIN THE RANGE OF 1:10 TO 10:1 AND THE TOTAL AMOUNT OF (A)+(B) PRESENT WITHIN SAID DISPERSION BEING WITHIN THE RANGE OF FROM 0.001 TO 75% BY WEIGHT, SAID DISPERSION BEING UNIFORMLY DISPERSED THERETHROUGHOUT SAID BRINE.
Claim 3
Dependent Claim
45 words
The aqueous brine of claim 1 wherein the stable liquid dispersion has a weight ratio of (A):(B) within the range of from 1:5 to 5:1 and the amount of (A)+(B) present within said dispersion is within the range of from 5 to 40% by weight.
Claim 4
Dependent Claim
45 words
The aqueous brine of claim 1 wherein the stable liquid dispersion wherein the weight ratio of (A):(B) is within the range of from 1:2 to 2:1 and the amount of (A)+(B) within said dispersion is within the range of from 10 to 30% by weight.
Claim 5
Dependent Claim
83 words
The aqueous brine of claim 1 wherein the stable liquid dispersion is: A. a polymeric latex composed of a water-in-oil emulsion which contains dispersed therein a finely-divided polyacrylic acid or a water-soluble salt thereof, said polymeric latex having uniformly distributed therein throughout; B. a water-soluble alkylene polyamine/epichlorohydrin polymer: with the weight ratio of (A):(B) being within the range of 1:10 to 10:1 and the total amount of (A)+(B) present within said dispersion being within the range of from 0.001 to 75% by weight.
Claim 6
Dependent Claim
28 words
The aqueous brine of claim 1 wherein the water-soluble anionic polymer is polyacrylic acid or its water-soluble salts and the water-soluble cationic polymer is an alkylene polyamine/epichlorohydrin polymer.
References Cited (Backward Citations)
US3637564A
Cited
US3724547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |