USRE28576E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for rapid dissolving water-soluble vinyl addition polymers using water-in-oil emulsions
Assignee: —
•
Filing: 1973-11-09
•
Granted: 1975-10-21
•
Expires: 1993-11-09
Abstract
Abstract Water-soluble vinyl addition polymers 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
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:39
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C02; C02F; C02F1/00; C02F1/52; C02F1/5227; C08J2300/00; C08J2300/10
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
82 words
A METHOD OF RAPIDLY DISSOLVING WATER-SOLUBLE VINYL ADDITION POLYMERS INTO WATER, WHICH COMPRISES THE STEPS OF: (A) PREPARING A WATER-INOIL EMULSION WHICH CONTAINS DISPERSED THEREIN (A) FROM 5 TO 75 PERCENT BY WEIGHT OF FINELY-DIVIDED WATER-SOLUBLE VINYL ADDITION POLYMER, (THEREBY PROVIDING A POLYMER-CONTAINING EMULSION) SAID EMULSION HAVING AN OIL-TO-WATER RATIO BETWEEN 5:1 1:10 AND SAID OIL BEING A HYDROCARBON LIQUID, AND THEN, (B) INVERTING SAID EMULSION IN WATER WHEREBY THE WATER-SOLUBLE VINYL ADDITION POLYMER IS RELEASED INTO THE WATER AS A SOLUTION.
Claim 2
Independent Claim
82 words
A METHOD OF RAPIDLY DISSOLVING WATER-SOLUBLE VINYL ADDITION POLYMERS INTO WATER, WHICH COMPRISES THE STEPS OF: (A) PREPARING A WATER-INOIL EMULSION WHICH CONTAINS DISPERSED THEREIN (A) FROM 5 TO 75 PERCENT BY WEIGHT OF FINELY-DIVIDED WATER-SOLUBLE VINYL ADDITION POLYMER, (THEREBY PROVIDING A POLYMER-CONTAINING EMULSION) SAID EMULSION HAVING AN OIL-TO-WATER RATIO BETWEEN 5:1 1:10 AND SAID OIL BEING A HYDROCARBON LIQUID, AND THEN, (B) INVERTING SAID EMULSION IN WATER WHEREBY THE WATER-SOLUBLE VINYL ADDITION POLYMER IS RELEASED INTO THE WATER AS A SOLUTION.
Claim 3
Dependent Claim
15 words
The method of claim 1 where the polymer-containing emulsion is inverted by means of agitation.
Claim 4
Dependent Claim
15 words
The method of claim 1 where the emulsion is inverted by means of a surfactant.
Claim 5
Independent Claim
137 words
A method of rapidly dissolving water-soluble vinyl addition polymers into water, which comprises the steps of: (A) preparing a water-in-oil emulsion which contains dispersed therein (at least 2%) from 5 to 75 percent by weight of particles of a water-soluble vinyl addition polymer (ranging in) having an average size in the range of from 5 millimicrons to 5 millimeters (of a water-soluble vinyl addition polymer;) , (thereby providing a polymer-containing emulsion) said emulsion having an oil-to-water ratio between 5:1 - 1:10 and said oil being a hydrocarbon liquid ; and then (B) inverting said polymer-containing emulsion by adding it to water which contains from 0.01 to 50% by weight of a surfactant based on the weight of the polymer (of a surfactant whereby the water-soluble vinyl addition polymer is relased into the water as a solution) .
Claim 6
Independent Claim
137 words
A method of rapidly dissolving water-soluble vinyl addition polymers into water, which comprises the steps of: (A) preparing a water-in-oil emulsion which contains dispersed therein (at least 2%) from 5 to 75 percent by weight of particles of a water-soluble vinyl addition polymer (ranging in) having an average size in the range of from 5 millimicrons to 5 millimeters (of a water-soluble vinyl addition polymer;) , (thereby providing a polymer-containing emulsion) said emulsion having an oil-to-water ratio between 5:1 - 1:10 and said oil being a hydrocarbon liquid ; and then (B) inverting said polymer-containing emulsion by adding it to water which contains from 0.01 to 50% by weight of a surfactant based on the weight of the polymer (of a surfactant whereby the water-soluble vinyl addition polymer is relased into the water as a solution) .
Claim 7
Dependent Claim
12 words
The method of claim 4 where the surfactant is a water-soluble surfactant.
Claim 8
Dependent Claim
23 words
The method of claim 5 where the surfactant is present in the water in an amount ranging from 1.0 to 10% by weight.
Claim 9
Independent Claim
153 words
A method of rapidly dissolving water-soluble vinyl addition polymers into water which comprises the steps of: (A) preparing a water-in-oil emulsion which contains dispersed therein from 5 to 75% by weight of particles of a water-soluble vinyl addition polymer (ranging in) having an average size in the range of from 5 millicrons to 5 microns (of a water-soluble vinyl addition polymer) , said emulsion having an oil-to-water ratio between 5:1 - 1:10 and said oil being a hydrocarbon liquid ; and then, (B) inverting said polymer-containing emulsion by adding it to water in an amount to provide an aqueous solution of from 0.1 to 20% by weight of polymer (to water which contains) , said water containing from 1.0 to 10% (by weight of the polymer) of a water soluble surfactant based upon the weight of the polymer (whereby the water-soluble vinyl addition polymer is released into the water as a solution) .
Claim 10
Independent Claim
153 words
A method of rapidly dissolving water-soluble vinyl addition polymers into water which comprises the steps of: (A) preparing a water-in-oil emulsion which contains dispersed therein from 5 to 75% by weight of particles of a water-soluble vinyl addition polymer (ranging in) having an average size in the range of from 5 millicrons to 5 microns (of a water-soluble vinyl addition polymer) , said emulsion having an oil-to-water ratio between 5:1 - 1:10 and said oil being a hydrocarbon liquid ; and then, (B) inverting said polymer-containing emulsion by adding it to water in an amount to provide an aqueous solution of from 0.1 to 20% by weight of polymer (to water which contains) , said water containing from 1.0 to 10% (by weight of the polymer) of a water soluble surfactant based upon the weight of the polymer (whereby the water-soluble vinyl addition polymer is released into the water as a solution) .
Claim 11
Independent Claim
88 words
A method of rapidly dissolving water-soluble vinyl addition polymers into water, which comprises the steps of: (A) preparing a water-in-oil emulsion which contains dispersed therein (a) from 5 to 75 percent by weight of finely-divided water-soluble vinyl addition polymer and a compatible water-soluble surfac-(tant, thereby providing a polymer-containing emulsion;) tant, said emulsion having an oil-to-water ratio between 5:1 and 1:10 and said oil being hydrocarbon liquid; and then, (B) inverting said emulsion in water whereby the water-soluble vinyl addition polymer is released into the water as a solution.
Claim 12
Independent Claim
88 words
A method of rapidly dissolving water-soluble vinyl addition polymers into water, which comprises the steps of: (A) preparing a water-in-oil emulsion which contains dispersed therein (a) from 5 to 75 percent by weight of finely-divided water-soluble vinyl addition polymer and a compatible water-soluble surfac-(tant, thereby providing a polymer-containing emulsion;) tant, said emulsion having an oil-to-water ratio between 5:1 and 1:10 and said oil being hydrocarbon liquid; and then, (B) inverting said emulsion in water whereby the water-soluble vinyl addition polymer is released into the water as a solution.
Claim 13
Dependent Claim
15 words
The method of claim 8 where the polymer-containing emulsion is inverted by means of agitation.
Claim 14
Independent Claim
117 words
A method of rapidly dissolving water-soluble vinyl addition polymers into water, which comprises the steps oF: (A) preparing a water-in-oil emulsion which contains (dispersed therein) from 5 to 75 percent (at least 2%) by weight of dispersed particles of a water-soluble vinyl addition polymer (ranging in) having an average size in the range of from 5 millimicrons to 5 millimeters (of a water-soluble vinyl addition polymer) and a compatible water-soluble surfactant, (thereby providing a polymer containing emulsion) said emulsion having an oil-to-water ratio between 5:1 - 1:10 and said oil being a hydrocarbon liquid ; and then, (B) inverting said emulsion in water whereby the water-soluble vinyl addition polymer is released into the water as a solution.
Claim 15
Independent Claim
117 words
A method of rapidly dissolving water-soluble vinyl addition polymers into water, which comprises the steps oF: (A) preparing a water-in-oil emulsion which contains (dispersed therein) from 5 to 75 percent (at least 2%) by weight of dispersed particles of a water-soluble vinyl addition polymer (ranging in) having an average size in the range of from 5 millimicrons to 5 millimeters (of a water-soluble vinyl addition polymer) and a compatible water-soluble surfactant, (thereby providing a polymer containing emulsion) said emulsion having an oil-to-water ratio between 5:1 - 1:10 and said oil being a hydrocarbon liquid ; and then, (B) inverting said emulsion in water whereby the water-soluble vinyl addition polymer is released into the water as a solution.
Claim 16
Independent Claim
106 words
A method of rapidly dissolving water-soluble vinyl addition polymers into water which comprises the steps of: (A) preparing a water-in-oil emulsion which contains (dispersed therein) from 5 to 75% by weight of dispersed particles of a water-soluble vinyl addition polymer (ranging in) having an average size in the range of from 5 millimicrons to 5 microns (of a water-soluble vinyl addition polymer) and a compatible water-soluble surfactant, said emulsion having an oil-to-water ratio between 5:1 - 1:10 and said oil being a hydrocarbon liquid; and then, (B) inverting said emulsion in water whereby the water-soluble vinyl addition polymer is released into the water as a solution.
Claim 17
Independent Claim
106 words
A method of rapidly dissolving water-soluble vinyl addition polymers into water which comprises the steps of: (A) preparing a water-in-oil emulsion which contains (dispersed therein) from 5 to 75% by weight of dispersed particles of a water-soluble vinyl addition polymer (ranging in) having an average size in the range of from 5 millimicrons to 5 microns (of a water-soluble vinyl addition polymer) and a compatible water-soluble surfactant, said emulsion having an oil-to-water ratio between 5:1 - 1:10 and said oil being a hydrocarbon liquid; and then, (B) inverting said emulsion in water whereby the water-soluble vinyl addition polymer is released into the water as a solution.
Claim 18
Dependent Claim
15 words
The method of claim 1 where the water-soluble vinyl addition polymer is a polyacrylic acid.
Claim 19
Dependent Claim
15 words
The method of claim 8 where the water-soluble vinyl addition polymer is a polyacrylic acid.
Claim 20
Independent Claim
51 words
A METHOD OF RAPIDLY DISSOLVING WATER-SOLUBLE VINYL ADDITION POLYMERS INTO WATER WHICH COMPRISES INVERTING IN WATER A WATER-IN-OIL EMULSION CONTAINING FROM 5 TO 75 PERCENT BY WEIGHT OF DISPERSED FINELY DIVIDED WATER-SOLUBLE VINYL ADDITION POLYMER, SAID EMULSION HAVING AN OIL-TO-WATER RATIO BETWEEN 5:1 -1:10 AND SAID OIL BEING A HYDROCARBON LIQUID.
Claim 21
Independent Claim
51 words
A METHOD OF RAPIDLY DISSOLVING WATER-SOLUBLE VINYL ADDITION POLYMERS INTO WATER WHICH COMPRISES INVERTING IN WATER A WATER-IN-OIL EMULSION CONTAINING FROM 5 TO 75 PERCENT BY WEIGHT OF DISPERSED FINELY DIVIDED WATER-SOLUBLE VINYL ADDITION POLYMER, SAID EMULSION HAVING AN OIL-TO-WATER RATIO BETWEEN 5:1 -1:10 AND SAID OIL BEING A HYDROCARBON LIQUID.
Claim 22
Dependent Claim
12 words
The method of claim 14 wherein said emulsion is inverted by agitation.
Claim 23
Dependent Claim
16 words
The method of claim 14 wherein said emulsion is inverted in the presence of a surfactant.
Claim 24
Dependent Claim
10 words
The method of claim 16 wherein the surfactant is water-soluble.
Claim 25
Dependent Claim
14 words
The method of claim 14 wherein said water-soluble vinyl addition polymer is polyacrylic acid.
Claim 26
Independent Claim
92 words
A method of rapidly dissolving water-soluble vinyl addition polymers into water which comprises inverting a water-in-oil emulsion by adding it to water, said emulsion containing dispersed therein from 5 to 75 percent by weight of particles of a water-soluble vinyl addition polymer having an average size in the range of from 5 millimicrons to 5 millimeters, said emulsion having an oil-to-water ratio between 5:1 - 1:10, said oil being a hydrocarbon liquid and said water containing from 0.1 to 50% by weight of a surfactant based on the weight of the polymer.
Claim 27
Independent Claim
92 words
A method of rapidly dissolving water-soluble vinyl addition polymers into water which comprises inverting a water-in-oil emulsion by adding it to water, said emulsion containing dispersed therein from 5 to 75 percent by weight of particles of a water-soluble vinyl addition polymer having an average size in the range of from 5 millimicrons to 5 millimeters, said emulsion having an oil-to-water ratio between 5:1 - 1:10, said oil being a hydrocarbon liquid and said water containing from 0.1 to 50% by weight of a surfactant based on the weight of the polymer.
Claim 28
Dependent Claim
10 words
The method of claim 19 wherein the surfactant is water-soluble.
Claim 29
Dependent Claim
25 words
The method of claim 19 wherein said water contains from 1.0 to 10% by weight of a surfactant based on the weight of the polymer.
Claim 30
Independent Claim
111 words
A method of rapidly dissolving water-soluble vinyl addition polymers into water which comprises inverting a water-in-oil emulsion by adding it to water, said emulsion containing dispersed therein from 5 to 75% by weight of particles of a water-soluble vinyl addition polymer having an average size in the range of from 5 millimicrons to 5 microns, said emulsion having an oil-to-water ratio between 5:1 - 1:10, said oil being a hydrocarbon liquid, said water containing from 1.0 to 10% of a water-soluble surfaCtant based on the weight of the polymer, and said emulsion being added in an amount to provide an aqueous solution containing from 0.1 to 20% by weight of polymer.
Claim 31
Independent Claim
111 words
A method of rapidly dissolving water-soluble vinyl addition polymers into water which comprises inverting a water-in-oil emulsion by adding it to water, said emulsion containing dispersed therein from 5 to 75% by weight of particles of a water-soluble vinyl addition polymer having an average size in the range of from 5 millimicrons to 5 microns, said emulsion having an oil-to-water ratio between 5:1 - 1:10, said oil being a hydrocarbon liquid, said water containing from 1.0 to 10% of a water-soluble surfaCtant based on the weight of the polymer, and said emulsion being added in an amount to provide an aqueous solution containing from 0.1 to 20% by weight of polymer.
Claim 32
Independent Claim
59 words
A method of rapidly dissolving water-soluble vinyl addition polymers into water which comprises inverting a water-in-oil emulsion in water, said emulsion containing from 5 to 75 percent by weight of dispersed finely divided water-soluble vinyl addition polymer and a compatible water-soluble surfactant, said emulsion having an oil-to-water ratio between 5:1 - 1:10 and said oil being a hydrocarbon liquid.
Claim 33
Independent Claim
59 words
A method of rapidly dissolving water-soluble vinyl addition polymers into water which comprises inverting a water-in-oil emulsion in water, said emulsion containing from 5 to 75 percent by weight of dispersed finely divided water-soluble vinyl addition polymer and a compatible water-soluble surfactant, said emulsion having an oil-to-water ratio between 5:1 - 1:10 and said oil being a hydrocarbon liquid.
Claim 34
Dependent Claim
12 words
The method of claim 23 wherein said emulsion is inverted by agitation.
Claim 35
Dependent Claim
28 words
The method of claim 23 wherein said polymer is in the form of particles having an average size in the range of from 5 millimicrons to 5 millimeters.
Claim 36
Dependent Claim
14 words
The method of claim 23 wherein said water-soluble vinyl addition polymer is polyacrylic acid.
Claim 37
Independent Claim
97 words
A method of rapidly dissolving water-soluble vinyl addition polymers into water which comprises inverting a water-in-oil emulsion by adding it to water, said emulsion containing from 5-75% by weight of dispersed particles of a water-soluble vinyl addition polymer having an average size in the range of from 5 millimicrons to 5 microns, said emulsion also containing a compatible water-soluble surfactant, said emulsion having an oil-to-water ratio between 5:1 - 1:10 and being added in an amount to provide an aqueous solution of from 0.1 to 20% by weight of polymer, and said oil being a hydrocarbon liquid.
Claim 38
Independent Claim
97 words
A method of rapidly dissolving water-soluble vinyl addition polymers into water which comprises inverting a water-in-oil emulsion by adding it to water, said emulsion containing from 5-75% by weight of dispersed particles of a water-soluble vinyl addition polymer having an average size in the range of from 5 millimicrons to 5 microns, said emulsion also containing a compatible water-soluble surfactant, said emulsion having an oil-to-water ratio between 5:1 - 1:10 and being added in an amount to provide an aqueous solution of from 0.1 to 20% by weight of polymer, and said oil being a hydrocarbon liquid.
Claim 39
Dependent Claim
13 words
The method of claim 1 wherein said oil is an aliphatic hydrocarbon liquid.
Claim 40
Dependent Claim
13 words
The method of claim 14 wherein said oil is an aliphatic hydrocarbon liquid.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |