US4426308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making calcium acetate deicing agents
Assignee: Individual
•
Filing: 1983-03-18
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Granted: 1984-01-17
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Expires: 2003-03-18
Abstract
Abstract A process of making a calcium acetate-containing solution having a pH value at room temperature between about 7 and about 8 is provided comprising reacting acetic acid with a carbonate compound, adding calcined limestone, and optionally finishing off the acid-base reaction with an amount of an alkali metal hydroxide comprising from about 2% to about 5% of the total stoichiometric complement to the amount of acetic acid. Further process options which may be used in the preparation of deicing agents include adding coarse limestone to the above-prepared calcium acetate-containing solution in amounts up to 10% by weight and converting the solution into solid flakes.
Inventors
- 👤 Alan B. Gancy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:02
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18; C07; C07C; C07C51/00; C07C51/41; C07C51/412
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
In a process of making a calcium acetate-containing solution having a pH value at room temperature in the range from about 7 to about 8, the steps comprising: a. completely reacting a carbonate with acetic acid, wherein the amount of said carbonate comprises from about 50% to about 70% of the total stoichiometric complement of said acid; and b. adding calcined limestone in an amount comprising from about 25% to about 50% of said total stoichiometric complement.
Claim 2
Dependent Claim
77 words
In a process of making a calcium acetate-containing solution having a pH value at room temperature in the range from about 7 to about 8, the steps comprising: a. completely reacting a carbonate with acetic acid, wherein the amount of said carbonate comprises from about 50% to about 70% of the total stoichiometric complement of said acid; and b. adding calcined limestone in an amount comprising from about 25% to about 50% of said total stoichiometric complement.
References Cited (Backward Citations)
US4239736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-16 | 1987-07-18 | 1988-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-16 | 1991-07-18 | 1992-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-16 | 1995-07-18 | 1996-01-17 | $7700.00 | Window Closed / Lapsed |