US3989592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble polymers and utilization thereof
Assignee: Mobil Oil AS
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Filing: 1973-11-23
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Granted: 1976-11-02
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Expires: 1993-11-23
Abstract
Abstract Water-soluble polymers that thicken reversibly in aqueous solution on alteration of the degree of alkalinity are manufactured by treating an aqueous suspension of protein with the enzymes elaborated extracellularly by a species of the genus Pseudomonas. The water soluble polymers resulting therefrom are biodegradable. They are useful for stabilizing emulsions, as flow-control agents in water base paint, and as anti- redeposition agents in laundry detergents. They are particularly useful as coagulants for colloidal suspensions of solids such as the phosphate slimes byproduct of the large scale hydraulic mining of phosphate deposits. They are also particularly useful as flow control agents in the water flooding process for the recovery of petroleum.
Inventors
- 👤 Richard Irwin Leavitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:37
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/86; C09K8/88; C09K8/90; C09K8/905; C09D; C09D7/00; C09D7/40; C09D7/43; C12; C12N; C12N1/00; C12N1/20; C12N1/205; C12P; C12P1/00; C12P1/04; C08; C08L; C08L89/00; C12R; C12R2001/00; C12R2001/01; C12R2001/38; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/874
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
57 words
A process for manufacturing watersoluble polymers that thicken reversibly in aqueous solution on adjustment of the degree of alkalinity, which comprises contacting, under conversion conditions, an aqueous suspension of a water-dispersible protein with the extracellular enzymes formed by the microorganism Pseudomonas fabricans No. 492 (A.T.C.C.No.21984), said enzymes being in an amount effective to produce said reversible thickening.
Claim 2
Dependent Claim
57 words
A process for manufacturing watersoluble polymers that thicken reversibly in aqueous solution on adjustment of the degree of alkalinity, which comprises contacting, under conversion conditions, an aqueous suspension of a water-dispersible protein with the extracellular enzymes formed by the microorganism Pseudomonas fabricans No. 492 (A.T.C.C.No.21984), said enzymes being in an amount effective to produce said reversible thickening.
Claim 3
Dependent Claim
58 words
A process for manufacturing water-soluble polymers that thicken reversibly in aqueous solution on adjustment of the degree of alkalinity, which comprises: preparing an aqueous suspension of a water-dispersible protein; innoculating said suspension with the microorganism Pseudomonas fabricans No. 492(A.T.C.C. No.21984), and incubating the innoculated suspension for about 2 to 35 hours whereby said water soluble polymers are formed.
Claim 4
Dependent Claim
58 words
A process for manufacturing water-soluble polymers that thicken reversibly in aqueous solution on adjustment of the degree of alkalinity, which comprises: preparing an aqueous suspension of a water-dispersible protein; innoculating said suspension with the microorganism Pseudomonas fabricans No. 492(A.T.C.C. No.21984), and incubating the innoculated suspension for about 2 to 35 hours whereby said water soluble polymers are formed.
Claim 5
Dependent Claim
13 words
The process described in claim 2 in which the waterdispersible protein comprises globulins.
Claim 6
Dependent Claim
13 words
The process described in claim 2 in which the waterdispersible protein comprises albumins.
Claim 7
Dependent Claim
24 words
The process described in claim 2 in which the waterdispersible protein is the meal produced by pressing a fat-bearing seed to recover an oil.
Claim 8
Dependent Claim
14 words
The process described in claim 5 in which the waterdispersible protein is cottonseed meal.
Claim 9
Dependent Claim
14 words
The process described in claim 5 in which the waterdispersible protein is soybean meal.
Claim 10
Dependent Claim
29 words
The process described in claim 2, including the additional step of adding from 1 to 10 wt. percent of a hydrocarbon liquid to said aqueous suspension prior to incubation.
Claim 11
Dependent Claim
29 words
The process described in claim 2, and including the step of separating suspended solids from said incubated suspension whereby to produce a substantially clear water solution of water-soluble polymers.
Claim 12
Dependent Claim
108 words
A process for the manufacture of water-soluble polymers that thicken reversibly in aqueous solution on adjustment of the degree of alkalinity, which comprises: preparing a first aqueous suspension of a water-dispersible proteinaceous solid; preparing a second aqueous suspension of the microorganism Pseudomonas fabricans No. 492 (A.T.C.C.No.21984) including nutrients and growth factors; incubating said second suspension for a time sufficient to induce the formation of quantities of extracellular enzymes effective to produce said reversible thickening; mixing a major quantity of said first suspension with a minor quantity of said incubated second suspension; and holding said admixture under conversion conditions for a time sufficient to enzymatically form said water-soluble polymers.
Claim 13
Dependent Claim
108 words
A process for the manufacture of water-soluble polymers that thicken reversibly in aqueous solution on adjustment of the degree of alkalinity, which comprises: preparing a first aqueous suspension of a water-dispersible proteinaceous solid; preparing a second aqueous suspension of the microorganism Pseudomonas fabricans No. 492 (A.T.C.C.No.21984) including nutrients and growth factors; incubating said second suspension for a time sufficient to induce the formation of quantities of extracellular enzymes effective to produce said reversible thickening; mixing a major quantity of said first suspension with a minor quantity of said incubated second suspension; and holding said admixture under conversion conditions for a time sufficient to enzymatically form said water-soluble polymers.
Claim 14
Dependent Claim
25 words
The process described in claim 10 and wherein, additionally; the said first and second aqueous suspensions are respectively adjusted to a pH of about 7.
References Cited (Backward Citations)
US3761353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |