Patent US4012354A successfully refreshed from Google Patents.
US4012354A
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Composition and method of flocculating mineral solids colloidally suspended in an aqueous medium
Assignee: Chemed Corp
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Filing: 1975-04-11
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Granted: 1977-03-15
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Expires: 1995-04-11
Abstract
Abstract This invention provides an improved composition and method for dispersing high molecular weight polymers and copolymers used as flocculants for water and waste treatment by using, in combination with the polymer, a nonionic surfactant to retard polymer solubility, soda ash, a chelant, and a filler.
Inventors
- 👤 Stewart N. Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:29
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5227; B; B01; B01D; B01D21/00; B01D21/01; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/26; C08K3/32; C08L; C08L33/00; C08L33/24; C08L33/26; C08L71/00; C08L71/02; Y; Y10; Y10S; Y10S524/00; Y10S524/922
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
119 words
A flocculant composition readily dispersible in water consisting essentially of, A. up to 90% by weight of a polymer of the formula ##STR4## Wherein Y represents hydrogen, ammonium, and alkali metal, R represents hydrogen or a methyl group, X represents halogen, a lower alkoxy or acetoxyl group, a cyanide group, a dialkylaminoalkyl group or a quaternized dialkylaminoalkyl group, m is 0 to 50, n is 50 to 100, p is 0 to 10, the sum of n plus m plus p is 100, Z is at least 15,000, and m, n, and p represent percentages of the groups present; B. 0.1-5% by weight of a non-ionic surfactant having an HLB index below 10, selected from the group consisting of
Claim 2
Dependent Claim
119 words
A flocculant composition readily dispersible in water consisting essentially of, A. up to 90% by weight of a polymer of the formula ##STR4## Wherein Y represents hydrogen, ammonium, and alkali metal, R represents hydrogen or a methyl group, X represents halogen, a lower alkoxy or acetoxyl group, a cyanide group, a dialkylaminoalkyl group or a quaternized dialkylaminoalkyl group, m is 0 to 50, n is 50 to 100, p is 0 to 10, the sum of n plus m plus p is 100, Z is at least 15,000, and m, n, and p represent percentages of the groups present; B. 0.1-5% by weight of a non-ionic surfactant having an HLB index below 10, selected from the group consisting of
Claim 3
Dependent Claim
25 words
Polyethoxylated-propoxylated fatty alcohols of the formula, ##STR5## Where n is 12 to 20, m is 1 to 50 and p is 1 to 50, and
Claim 4
Dependent Claim
25 words
Polyethoxylated-propoxylated fatty alcohols of the formula, ##STR5## Where n is 12 to 20, m is 1 to 50 and p is 1 to 50, and
Claim 5
Dependent Claim
52 words
Polypropylene oxide to which ethoxy groups are attached to form block copolymers, of the formula, ##STR6## Where n is 5 to 50 and m is 1 to 10 C. soda ash in an amount equivalent to free carboxy groups, if any, in the said polymer; D. 1-5% by weight of chelant; and
Claim 6
Dependent Claim
52 words
Polypropylene oxide to which ethoxy groups are attached to form block copolymers, of the formula, ##STR6## Where n is 5 to 50 and m is 1 to 10 C. soda ash in an amount equivalent to free carboxy groups, if any, in the said polymer; D. 1-5% by weight of chelant; and
Claim 7
Dependent Claim
23 words
E. up to 70% by weight of a filler. 2. Flocculation method comprising dispersing the composition of claim 1 into a water system.
References Cited (Backward Citations)
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US3428558A
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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) | 1980-03-14 | 1980-09-13 | 1981-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-14 | 1984-09-13 | 1985-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-14 | 1988-09-13 | 1989-03-15 | $7700.00 | Window Closed / Lapsed |