US4511485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonpolluting salts and method of making same
Assignee: Individual
•
Filing: 1983-04-20
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Granted: 1985-04-16
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Expires: 2003-04-20
Abstract
Abstract A reduced pollutant-containing salt mixture and method of making same is provided wherein a salt mixture partially comprised of calcium acetate and partially comprised of at least one other pollutant salt is produced by mixing a pollutant salt-containing solution and a calcium acetate-containing solution and converting said mixture into a solid salt containing both the pollutant salt and the nonpollutant calcium acetate. A process option involves chemically reacting calcium chloride and calcium acetate in a calcium chloride-to-calcium acetate mole ratio in the range from 0 to 1 to produce a non-deliquescent salt. A further process option includes mixing either dry calcium chloride or dry sodium chloride with dry calcium acetate to obtain a reduced pollutant-containing salt mixture.
Inventors
- 👤 Alan B. Gancy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:39
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18; C09K3/185; C07; C07C; C07C53/00; C07C53/08; C07C53/10
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
16 words
A salt mixture having good water solubility comprised of calcium acetate, magnesium acetate and calcium chloride.
Claim 2
Dependent Claim
16 words
A salt mixture having good water solubility comprised of calcium acetate, magnesium acetate and calcium chloride.
Claim 3
Dependent Claim
33 words
A non-deliquescent salt mixture having good water solubility comprised of calcium acetate, magnesium acetate and calcium chloride wherein the mixture has a mole ratio of calcium chloride-to-calcium acetate ranging between 0 and 1.0.
Claim 4
Dependent Claim
33 words
A non-deliquescent salt mixture having good water solubility comprised of calcium acetate, magnesium acetate and calcium chloride wherein the mixture has a mole ratio of calcium chloride-to-calcium acetate ranging between 0 and 1.0.
Claim 5
Dependent Claim
16 words
A salt mixture comprised of magnesium acetate and non-deliquescent calcium chloride acetate having good water solubility.
Claim 6
Dependent Claim
16 words
A salt mixture comprised of magnesium acetate and non-deliquescent calcium chloride acetate having good water solubility.
Claim 7
Dependent Claim
16 words
A salt mixture having good water solubility comprised of calcium acetate, magnesium acetate and sodium chloride.
Claim 8
Dependent Claim
16 words
A salt mixture having good water solubility comprised of calcium acetate, magnesium acetate and sodium chloride.
Claim 9
Dependent Claim
30 words
A salt mixture having good water solubility comprised of calcium acetate and sodium chloride, wherein the calcium acetate and the sodium chloride have substantially the same particle size and density.
Claim 10
Dependent Claim
30 words
A salt mixture having good water solubility comprised of calcium acetate and sodium chloride, wherein the calcium acetate and the sodium chloride have substantially the same particle size and density.
Claim 11
Dependent Claim
25 words
The non-deliquescent salt as described in claim 3 wherein the salt has a mole ratio of calcium chloride species-to-calcium acetate species substantially equal to unity.
Claim 12
Dependent Claim
14 words
The salt as defined in claim 3, wherein said calcium chloride acetate is anhydrous.
Claim 13
Dependent Claim
17 words
The salt mixture as defined in claim 1, wherein the mixture is a liquid freezing-point depressing agent.
Claim 14
Dependent Claim
21 words
The salt mixture as defined in claim 1, wherein the mixture is a deicing agent containing substantially no undissociated acetic acid.
Claim 15
Dependent Claim
64 words
A process of making non-deliquescent calcium chloride acetate salt having good water solubility, comprising the steps of: a. blending a calcium chloride-containing solution and a calcium acetate-containing solution to form a liquor; b. crystallizing at least a portion of the liquor to form calcium chloride acetate salt; and c. converting at least a portion of any remaining noncrystallized liquor into solid calcium chloride acetate.
Claim 16
Dependent Claim
64 words
A process of making non-deliquescent calcium chloride acetate salt having good water solubility, comprising the steps of: a. blending a calcium chloride-containing solution and a calcium acetate-containing solution to form a liquor; b. crystallizing at least a portion of the liquor to form calcium chloride acetate salt; and c. converting at least a portion of any remaining noncrystallized liquor into solid calcium chloride acetate.
Claim 17
Dependent Claim
20 words
A deicing process comprising applying the solid calcium chloride acetate made according to the process of claim 10 to ice.
Claim 18
Dependent Claim
27 words
A process for lowering the freezing-point of a liquid comprising adding the solid calcium chloride acetate made according to the process of claim 10 to the liquid.
Claim 19
Dependent Claim
15 words
The process as defined in claim 10, wherein magnesium acetate is present in the liquor.
Claim 20
Dependent Claim
12 words
The process as defined in claim 12, wherein the liquid is water.
Claim 21
Dependent Claim
25 words
The process as defined in claim 10, wherein the liquor has a mole ratio of calcium chloride-to-calcium acetate in the range between 0 and 1.
Claim 22
Dependent Claim
18 words
The process as defined in claim 10, wherein step (b) comprises vacuum crystallizing said portion of the liquor.
Claim 23
Dependent Claim
25 words
The process as defined in claim 15, wherein said vacuum crystallization comprises feeding said mixture into a lagged, closed vessel maintained substantially under a vacuum.
Claim 24
Dependent Claim
14 words
The process as defined in claim 10, wherein said calcium acetate-containing solution is saturated.
Claim 25
Dependent Claim
29 words
The process as defined in claim 10, wherein said calcium chloride-containing solution is a product of a process for manufacturing soda ash containing about 40 wt. % calcium chloride.
Claim 26
Dependent Claim
18 words
The process as defined in claim 10, wherein step (b) comprises introducing the liquor into a flaking apparatus.
Claim 27
Dependent Claim
40 words
The process as defined in claim 20, wherein said flakes have a diameter in the range from about 0.25 to about 0.75 inches, a thickness in the range from about 0.04 to about 0.1 inches and are substantially disc shaped.
Claim 28
Dependent Claim
16 words
The process as defined in claim 20, wherein said flaking apparatus comprises a heated rotating drum.
Claim 29
Dependent Claim
17 words
The process as defined in claim 20, wherein said flaking apparatus comprises a heated stainless steel belt.
Claim 30
Dependent Claim
23 words
The process as defined in claim 10, including an additional step of removing substantially all undissociated acetic acid from the calcium acetate-containing solution.
Claim 31
Dependent Claim
23 words
The process as defined in claim 24, wherein said additional step comprises adjusting the pH of said calcium acetate-containing solution to about 7-8.
Claim 32
Dependent Claim
31 words
In a process of making a deicing agent, the step comprising mixing sodium chloride crystals and non-deliquescent, readily water soluble calcium chloride acetate crystals having substantially the same size and density.
Claim 33
Dependent Claim
31 words
In a process of making a deicing agent, the step comprising mixing sodium chloride crystals and non-deliquescent, readily water soluble calcium chloride acetate crystals having substantially the same size and density.
Claim 34
Independent Claim
33 words
A method for depressing the freezing-point of a liquid comprising adding to the liquid an effective amount of a salt mixture comprising non-deliquescent calcium chloride acetate having good water solubility and magnesium acetate.
Claim 35
Independent Claim
33 words
A method for depressing the freezing-point of a liquid comprising adding to the liquid an effective amount of a salt mixture comprising non-deliquescent calcium chloride acetate having good water solubility and magnesium acetate.
Claim 36
Independent Claim
30 words
A method for depressing the freezing-point of a liquid comprising adding to the liquid an effective amount of a salt mixture comprised of calcium acetate, magnesium acetate and calcium chloride.
Claim 37
Independent Claim
30 words
A method for depressing the freezing-point of a liquid comprising adding to the liquid an effective amount of a salt mixture comprised of calcium acetate, magnesium acetate and calcium chloride.
Claim 38
Independent Claim
34 words
A method for depressing the freezing-point of a liquid comprising adding to the liquid an effective amount of a salt mixture having good water solubility comprised of calcium acetate, magnesium acetate and sodium chloride.
Claim 39
Independent Claim
34 words
A method for depressing the freezing-point of a liquid comprising adding to the liquid an effective amount of a salt mixture having good water solubility comprised of calcium acetate, magnesium acetate and sodium chloride.
Claim 40
Independent Claim
23 words
A method for depressing the freezing-point of a liquid comprising adding to the liquid an effective amount of calcium acetate and magnesium acetate.
Claim 41
Independent Claim
23 words
A method for depressing the freezing-point of a liquid comprising adding to the liquid an effective amount of calcium acetate and magnesium acetate.
References Cited (Backward Citations)
US1958034A
Cited
US3906140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-15 | 1988-10-15 | 1989-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-15 | 1992-10-15 | 1993-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-15 | 1996-10-15 | 1997-04-16 | $7700.00 | Window Closed / Lapsed |