Patent US3624019A successfully refreshed from Google Patents.
US3624019A
Expired / Lapsed
US
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Process for rapidly dissolving water-soluble polymers
Assignee: ChampionX LLC
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Filing: 1970-12-15
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Granted: 1971-11-30
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Expires: 1990-12-15
Abstract
Abstract Water-soluble vinyl addition polymers and gums may be rapidly dissolved in water by first dispersing these polymers into a water-in-oil emulsion and then inverting these emulsions in water. The inversion of the emulsion releases the polymer into water as a solution.
Inventors
- 👤 Donald R Anderson
- 👤 Alvin J Frisque
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:59
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C02; C02F; C02F1/00; C02F1/52; C02F1/5227; C02F1/54; C08L; C08L33/00; C08L33/24; C08L33/26; C08J2300/00; C08J2300/10; Y; Y10; Y10S; Y10S422/00; Y10S422/901; Y10S507/00; Y10S507/935; Y10S507/936; Y10S524/00; Y10S524/922
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
63 words
A method of rapidly dissolving an acrylamide polymer into water, which comprises the steps of: A. preparing a water-in-oil emulsion which contains dispersed therein finely-divided an acrylamide polymer and a compatible water-soluble surfactant; thereby providing an acrylamide polymer containing emulsion; and then, B. inverting said emulsion by adding it to water whereby the acrylamide polymer is released into the water as a solution.
Claim 2
Independent Claim
115 words
A method of rapidly dissolving an acrylamide polymer into water, which comprises the steps of: A. preparing a water-in-oil Emulsion having an oil to water ratio between 5:1- 1:10 which contains dispersed therein from 51- 75 percent by weight of particles ranging in size from 5 millimicrons to 5 millimeters of an acrylamide polymer; and then, B. inverting said acrylamide polymer containing emulsion by adding it in an amount to provide from 0.1- 20 percent by weight of the acrylamide polymer to water which contains from 1.0- 10 percent by weight based on the weight of the acrylamide polymer of a water-soluble surfactant whereby the acrylamide polymer is released into the water as a solution.
Claim 3
Independent Claim
112 words
A method of rapidly dissolving an acrylamide polymer into water which comprises the steps of: A. preparing a water-in-oil emulsion having an oil to water ration between 5:1- 1:10 which contains dispersed therein from 5 - 75 percent by weight of particles ranging in size from 5 millimicrons to 5 millimeters of an acrylamide polymer and from 1.0- 10 percent by weight of the acrylamide polymer of a compatible water-soluble surfactant; and then, B. inverting said acrylamide polymer containing emulsion by adding it in an amount to provide from 0.1- 20 percent by weight of the acrylamide polymer to water whereby the acrylamide polymer is released into the water as a solution.
Claim 4
Independent Claim
103 words
A method of rapidly dissolving an acrylamide polymer into water which comprises the steps of: A. preparing a water-in-oil emulsion which contains dispersed therein from 5 - 75 percent by weight of particles ranging in size from 5 millimicrons to 5 microns of an acrylamide polymer and from 1.0- 10 percent by weight of the acrylamide polymer of a compatible water-soluble surfactant; and then, B. inverting said acrylamide polymer containing emulsion by adding it in an amount to provide from 0.1- 20 percent by weight of the acrylamide polymer to water whereby the acrylamide polymer is released into the water as a solution.
Claim 5
Independent Claim
107 words
A method of rapidly dissolving an acrylamide polymer into water which comprises the steps of: A. preparing a water-in-oil emulsion which contains dispersed therein from 5 - 75 percent by weight of particles ranging in size from 5 millimicrons to 5 microns of an acrylamide polymer, and then B. inverting said acrylamide polymer containing emulsion by adding it in an amount to provide from 0.1- 20 percent by weight of the acrylamide polymer to water which contains from 1.0- 10 percent by weight based on the weight of the acrylamide polymer of a water-soluble surfactant whereby the acrylamide polymer is released into the water as a solution.
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |