US4118355A
Expired / Lapsed
US
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Method and composition of a polymer in convenient liquid form
Assignee: Veolia WTS USA Inc
•
Filing: 1978-04-17
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Granted: 1978-10-03
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Expires: 1998-04-17
Abstract
Abstract A polymer in convenient liquid form is disclosed which comprises a mixture of the polymer with a first solvent in which the polymer is soluble and a second solvent which is co-soluble with the first solvent and in which the polymer is not soluble. A method for forming the polymer in convenient liquid form is also disclosed.
Inventors
- 👤 Norman Vorchheimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:29
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08K; C08K3/00; C08K3/01; C08K5/00; C08K5/0008; C08K5/0016; C08K5/04; C08K5/05; C08K5/06; C08J2333/00; C08J2333/24; C08J2333/26
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
69 words
A method of increasing the concentration of a polymer in a first solvent in which it is soluble comprising forming a solution of the polymer with the first solvent and a second solvent which is cosoluble with the first solvent and in which the polymer is not soluble, wherein the solution is formed by forming an initial solution of the first and second solvents and adding the polymer thereto.
Claim 2
Independent Claim
69 words
A method of increasing the concentration of a polymer in a first solvent in which it is soluble comprising forming a solution of the polymer with the first solvent and a second solvent which is cosoluble with the first solvent and in which the polymer is not soluble, wherein the solution is formed by forming an initial solution of the first and second solvents and adding the polymer thereto.
Claim 3
Dependent Claim
17 words
The method of claim 1, wherein the second solvent comprises more than 25% of the initial solution.
Claim 4
Dependent Claim
32 words
The method of claim 2, wherein the polymer is added in an amount of from about 4% to about 50% of the total amount of the first solvent, second solvent and polymer.
Claim 5
Dependent Claim
28 words
The method of claim 2, wherein the polymer is added in an amount greater than 5% of the total amount of the first solvent, second solvent and polymer.
Claim 6
Dependent Claim
17 words
The method of claim 4, wherein the first solvent comprises at least 17% of the initial solution.
Claim 7
Dependent Claim
14 words
The method of claim 1, wherein the polymer is a water-soluble vinyl addition polymer.
Claim 8
Dependent Claim
11 words
The method of claim 6, wherein the polymer is a polyacrylamide.
Claim 9
Dependent Claim
11 words
The method of claim 5, wherein the first solvent is water.
Claim 10
Dependent Claim
16 words
The method of claim 8, wherein the polymer is a copolymer of acrylamide and diethylaminoethylacrylate methosulfate.
Claim 11
Dependent Claim
27 words
The method of claim 7, wherein the second solvent is at least one member selected from the group consisting of a lower alcohol, ether, glycol and methanol.
Claim 12
Dependent Claim
16 words
The method of claim 8, wherein the polymer is a copolymer of acrylamide with sodium acrylate.
Claim 13
Dependent Claim
14 words
The method of claim 1, wherein a surfactant is also added to the mixture.
Claim 14
Dependent Claim
26 words
The method of claim 10, wherein a surfactant is also added to the mixture, and wherein the second solvent is ethylene glycol monoethyl ether and methanol.
Claim 15
Dependent Claim
57 words
A polymer in convenient liquid form comprising a non-gel-like solution of a first solvent in which the polymer is soluble, a second solvent which is cosoluble with the first solvent and in which the polymer is not soluble and said polymer, wherein the polymer comprises from about 4% to 50% of the total amount of said solution.
Claim 16
Dependent Claim
57 words
A polymer in convenient liquid form comprising a non-gel-like solution of a first solvent in which the polymer is soluble, a second solvent which is cosoluble with the first solvent and in which the polymer is not soluble and said polymer, wherein the polymer comprises from about 4% to 50% of the total amount of said solution.
Claim 17
Dependent Claim
24 words
A polymer in convenient liquid form according to claim 14, wherein the polymer comprises more than 5% of the total amount of said solution.
Claim 18
Dependent Claim
28 words
A polymer in convenient liquid form according to claim 15, wherein the second solvent comprises more than 25% of the total amount of the first and second solvents.
Claim 19
Dependent Claim
28 words
A polymer in convenient liquid form according to claim 16, wherein the first solvent comprises at least 17% of the total amount of the first and second solvents.
Claim 20
Dependent Claim
30 words
A polymer in convenient liquid form according to claim 16, wherein the first solvent comprises from about 25% to 75% of the total amount of the first and second solvents.
Claim 21
Dependent Claim
22 words
A polymer in convenient liquid form according to claim 14, wherein the polymer is a high molecular weight water-soluble vinyl addition polymer.
Claim 22
Dependent Claim
22 words
A polymer in convenient liquid form according to claim 18, wherein the polymer is a high molecular weight water-soluble vinyl addition polymer.
Claim 23
Dependent Claim
22 words
A polymer in convenient liquid form according to claim 19, wherein the polymer has a molecular weight of at least about 100,000.
Claim 24
Dependent Claim
16 words
A polymer in convenient liquid form according to claim 18, wherein the polymer is a polyacrylamide.
Claim 25
Dependent Claim
21 words
A polymer in convenient liquid form according to claim 18, wherein the polymer is a copolymer of acrylamide and sodium acrylate.
Claim 26
Dependent Claim
16 words
A polymer in convenient liquid form according to claim 17, wherein said first solvent is water.
Claim 27
Dependent Claim
31 words
A polymer in convenient liquid form according to claim 24, wherein said second solvent comprises at least one member selected from the group consisting of glycol, ether and a lower alcohol.
Claim 28
Dependent Claim
21 words
A polymer in convenient liquid form according to claim 25, wherein said second solvent comprises ethylene glycol monoethyl ether and methanol.
Claim 29
Dependent Claim
15 words
A polymer in convenient liquid form according to claim 14, which further comprises a surfactant.
Claim 30
Dependent Claim
15 words
A polymer in convenient liquid form according to claim 18, which further comprises a surfactant.
Claim 31
Dependent Claim
22 words
A polymer in convenient liquid form according to claim 14, wherein said polymer has a molecular weight of at least about 100,000.
Claim 32
Dependent Claim
18 words
A polymer in convenient liquid form according to claim 24, wherein said second solvent comprises a lower alcohol.
Claim 33
Dependent Claim
21 words
A polymer in convenient liquid form according to claim 26, wherein the polymer is a copolymer of acrylamide and diethylaminoethylacrylate methosulfate.
Claim 34
Dependent Claim
21 words
A polymer in convenient liquid form according to claim 26, wherein the polymer is a copolymer of acrylamide and sodium acrylate.
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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) | 1981-10-02 | 1982-04-03 | 1982-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-02 | 1986-04-03 | 1986-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-02 | 1990-04-03 | 1990-10-03 | $7700.00 | Window Closed / Lapsed |