US4080351A
Expired / Lapsed
US
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Composition and method for dispersing high molecular weight polymers in water
Assignee: Diversey Corp Canada
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Filing: 1976-06-30
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Granted: 1978-03-21
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Expires: 1996-06-30
Abstract
Abstract This invention provides an improved composition and method for dispersing high molecular weight flocculant polymers and copolymers used for water and waste treatment by means of an effervescing additive.
Inventors
- 👤 Michael T. Zalzal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:10
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5227; C02F1/54
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
46 words
A polymer and effervescent composition, consisting essentially of particles of water-soluble polymer and 1% to 99% powdered effervescents based on the weight of the total formulated product, which when added to water, results in complete separation and dispersion of the polymer particles prior to their dissolution.
Claim 2
Dependent Claim
46 words
A polymer and effervescent composition, consisting essentially of particles of water-soluble polymer and 1% to 99% powdered effervescents based on the weight of the total formulated product, which when added to water, results in complete separation and dispersion of the polymer particles prior to their dissolution.
Claim 3
Dependent Claim
51 words
Composition according to claim 1 in which the polymer is cationic, anionic, or nonionic, and is selected from the group consisting of acrylamide, polystyrene sulfonate, polyethylene oxide, methacrylamide, salts of polyacrylic acid, salts of polymethacrylic acid, and copolymers thereof; said polymer having a molecular weight of about 0.1 to 20 million.
Claim 4
Dependent Claim
25 words
The polymer and effervescent composition of claim 1 wherein the effervescent material is present in an amount of about 40% to about 70% by weight.
Claim 5
Independent Claim
25 words
A method of dispersing particles of water-soluble polymer which comprises mixing the polymer with 1-90% of a powdered effervescible ingredient prior to addition of water.
Claim 6
Independent Claim
25 words
A method of dispersing particles of water-soluble polymer which comprises mixing the polymer with 1-90% of a powdered effervescible ingredient prior to addition of water.
Claim 7
Dependent Claim
50 words
Method according to claim 4 wherein the polymer is cationic, anionic, or nonionic, and is selected from the group consisting of acrylamide, polystyrene sulfonate, polyethylene oxide, methacrylamide, salts of polyacrylic acid, salts of polymethacrylic acid, and copolymers thereof; said polymer having a molecular weight of about 0.1 to 20 million.
Claim 8
Dependent Claim
36 words
The method of claim 5 wherein the mixture consists essentially of polyacrylamide and effervescent material, whereby when the composition is added to water, the polymer particles are caused to completely separate and disperse prior to dissolving.
Claim 9
Dependent Claim
23 words
The method of claim 6 wherein the effervescent material is present in an amount of about 40 to about 70 parts by weight.
Claim 10
Dependent Claim
60 words
A polymer and effervescent composition consisting essentially of particles of water-soluble polymer and 1% to 99% of an effervescent material based on the weight of the total formulated product, which when added to water, results in complete separation and dispersion of the polymer particles prior to their dissolution, wherein the effervescent material consists essentially of sodium carbonate and sodium bisulfate.
Claim 11
Dependent Claim
60 words
A polymer and effervescent composition consisting essentially of particles of water-soluble polymer and 1% to 99% of an effervescent material based on the weight of the total formulated product, which when added to water, results in complete separation and dispersion of the polymer particles prior to their dissolution, wherein the effervescent material consists essentially of sodium carbonate and sodium bisulfate.
Claim 12
Independent Claim
38 words
A method of dispersing particles of water-soluble polymer which comprises mixing the polymer with 1% to 99% of an effervescent material prior to the addition of water, said effervescent material consisting essentially of sodium bisulfate and sodium carbonate.
Claim 13
Independent Claim
38 words
A method of dispersing particles of water-soluble polymer which comprises mixing the polymer with 1% to 99% of an effervescent material prior to the addition of water, said effervescent material consisting essentially of sodium bisulfate and sodium carbonate.
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) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |