US5387358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkaline earth metal sodium acetate, a process for its preparation and its use
Assignee: Hoechst AG
•
Filing: 1993-12-02
•
Granted: 1995-02-07
•
Expires: 2013-12-02
Abstract
Abstract The alkaline earth metal sodium acetate according to the invention comprises 18 to 22% by weight of calcium (Ca++), 0 to 1% by weight of magnesium (Mg++), 4 to 7% by weight of sodium (Na+), 66 to 75% by weight of acetate (CH3COO-), 0 to 7% by weight of water and 0 to 2% by weight of water-insoluble components For its preparation, a calcium oxide containing at least 85% of CaO, acetic acid and sodium hydroxide solution are reacted with one another and the reaction product is granulated to give particles of 0.5 to 5 mm. The alkaline earth metal sodium acetate according to the invention can be used as an environment-friendly deicing agent causing little corrosion.
Inventors
- 👤 Johannes Himmrich
- 👤 Gunther Schimmel
- 👤 Klaus Pollmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:53
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18; C09K3/185
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
181 words
An alkaline earth metal sodium acetate consisting essentially of 18 to 22% by weight of calcium (Ca ++ ), 0 to 1% by weight of magnesium (Mg ++ ), 4 to 7% by weight of sodium (Na + ), 66 to 75% by weight of acetate (CH 3 COO - ), 0 to 7% by weight of water; said alkaline earth metal sodium acetate having the following X-ray diffraction pattern: ______________________________________
d/A Intensity d/A Intensity
______________________________________
12.75 +- 0.2
s 2.39 +- 0.02
w
9.30 +- 0.1 m 2.29 +- 0.02
w
6.00 +- 0.08
m 2.23 +- 0.02
mw
4.65 +- 0.05
w 2.13 +- 0.02
m
3.61 +- 0.04
w 2.04 +- 0.02
w
3.40 +- 0.04
vs 1.96 +- 0.02
mw
3.28 +- 0.04
m 1.87 +- 0.02
w
3.12 +- 0.03
w 1.84 +- 0.02
w
2.88 +- 0.03
mw 1.80 +- 0.02
mw
2.65 +- 0.03
w 1.70 +- 0.02
w
2.55 +- 0.02
w 1.57 +- 0.02
w
______________________________________
vs = very strong
s = strong
m = medium
mw = mediumweak
w = weak.
Claim 2
Dependent Claim
181 words
An alkaline earth metal sodium acetate consisting essentially of 18 to 22% by weight of calcium (Ca ++ ), 0 to 1% by weight of magnesium (Mg ++ ), 4 to 7% by weight of sodium (Na + ), 66 to 75% by weight of acetate (CH 3 COO - ), 0 to 7% by weight of water; said alkaline earth metal sodium acetate having the following X-ray diffraction pattern: ______________________________________
d/A Intensity d/A Intensity
______________________________________
12.75 +- 0.2
s 2.39 +- 0.02
w
9.30 +- 0.1 m 2.29 +- 0.02
w
6.00 +- 0.08
m 2.23 +- 0.02
mw
4.65 +- 0.05
w 2.13 +- 0.02
m
3.61 +- 0.04
w 2.04 +- 0.02
w
3.40 +- 0.04
vs 1.96 +- 0.02
mw
3.28 +- 0.04
m 1.87 +- 0.02
w
3.12 +- 0.03
w 1.84 +- 0.02
w
2.88 +- 0.03
mw 1.80 +- 0.02
mw
2.65 +- 0.03
w 1.70 +- 0.02
w
2.55 +- 0.02
w 1.57 +- 0.02
w
______________________________________
vs = very strong
s = strong
m = medium
mw = mediumweak
w = weak.
Claim 3
Dependent Claim
216 words
A deicing agent causing little corrosion comprising a mixture of a) up to 50% by weight of carboxylates having 1 to 4 carbon atoms with cations selected from alkali metals and alkaline earth metals, and b) an alkaline earth metal saCium acetate consisting essentially of 18to 22% by weight of calcium (Ca ++ ), 0 to 1% by weight of magnesium (Mg ++ ), 4 to 7% by weight of sodium (Na + ), 66 to 75% by weight of acetate (CH 3 COO - ), 0 to 7% by weight of water; said alkaline earth metal sodium acetate having the following X-ray diffraction pattern: ______________________________________
d/A Intensity d/A Intensity
______________________________________
12.75 +- 0.2
s 2.39 +- 0.02
w
9.30 +- 0.1 m 2.29 +- 0.02
w
6.00 +- 0.08
m 2.23 +- 0.02
mw
4.65 +- 0.05
w 2.13 +- 0.02
m
3.61 +- 0.04
w 2.04 +- 0.02
w
3.40 +- 0.04
vs 1.96 +- 0.02
mw
3.28 +- 0.04
m 1.87 +- 0.02
w
3.12 +- 0.03
w 1.84 +- 0.02
w
2.88 +- 0.03
mw 1.80 +- 0.02
mw
2.65 +- 0.03
w 1.70 +- 0.02
w
2.55 +- 0.02
w 1.57 +- 0.02
w
______________________________________
vs = very strong
s = strong
m = medium
mw = mediumweak
w = weak.
Claim 4
Dependent Claim
216 words
A deicing agent causing little corrosion comprising a mixture of a) up to 50% by weight of carboxylates having 1 to 4 carbon atoms with cations selected from alkali metals and alkaline earth metals, and b) an alkaline earth metal saCium acetate consisting essentially of 18to 22% by weight of calcium (Ca ++ ), 0 to 1% by weight of magnesium (Mg ++ ), 4 to 7% by weight of sodium (Na + ), 66 to 75% by weight of acetate (CH 3 COO - ), 0 to 7% by weight of water; said alkaline earth metal sodium acetate having the following X-ray diffraction pattern: ______________________________________
d/A Intensity d/A Intensity
______________________________________
12.75 +- 0.2
s 2.39 +- 0.02
w
9.30 +- 0.1 m 2.29 +- 0.02
w
6.00 +- 0.08
m 2.23 +- 0.02
mw
4.65 +- 0.05
w 2.13 +- 0.02
m
3.61 +- 0.04
w 2.04 +- 0.02
w
3.40 +- 0.04
vs 1.96 +- 0.02
mw
3.28 +- 0.04
m 1.87 +- 0.02
w
3.12 +- 0.03
w 1.84 +- 0.02
w
2.88 +- 0.03
mw 1.80 +- 0.02
mw
2.65 +- 0.03
w 1.70 +- 0.02
w
2.55 +- 0.02
w 1.57 +- 0.02
w
______________________________________
vs = very strong
s = strong
m = medium
mw = mediumweak
w = weak.
References Cited (Backward Citations)
US4377488A
Cited
US4400285A
Cited
US4425251A
Cited
WO1988005456A1
Cited
US4855071A
Cited
US5064551A
Cited
EP0505746A2
Cited
WO1992017557A1
Cited
US5219483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-02-06 | 1998-08-08 | 1999-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-06 | 2002-08-08 | 2003-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-06 | 2006-08-08 | 2007-02-07 | $7700.00 | Window Closed / Lapsed |