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US5238592A
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Liquid de-icing agent based on acetates and process for melting snow and ice on traffic surfaces with the aid of this agent
Assignee: Clariant Produkte Deutschland GmbH
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Filing: 1991-11-04
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Granted: 1993-08-24
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Expires: 2011-11-04
Abstract
Abstract The de-icing agent described comprises an aqueous solution of at least one alkali metal acetate or at least one alkaline earth metal acetate or a mixture of the two and water as the main components, and 0.01 to 1% by weight of at least one water-soluble triazole compound or at least one water-soluble imidazole compound or a mixture of the two and, if appropriate, 0.01 to 0.5% by weight of at least one alkali metal phosphate as inhibitors. The process described for melting snow and ice on traffic surfaces comprises application of an effective amount of the novel de-icing agent to the ice- and/or snow-covered surfaces to be treated.
Inventors
- 👤 Achim Stankowiak
- 👤 Josef Kapfinger
- 👤 Gerhard Bettermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:41
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18; C09K3/185
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
72 words
A de-icing agent, consisting essentially of a) 25 to 60% by weight of at least one alkali metal acetate, b) 0.03 to 0.5% by weight of at least one water-soluble triazole compound or at least one water-soluble imidazole compound or a mixture of the two and b') 0.03 to 0.2% by weight of at least one alkali metal phosphate and c) water, as the remainder to make up to 100% by weight.
Claim 2
Dependent Claim
72 words
A de-icing agent, consisting essentially of a) 25 to 60% by weight of at least one alkali metal acetate, b) 0.03 to 0.5% by weight of at least one water-soluble triazole compound or at least one water-soluble imidazole compound or a mixture of the two and b') 0.03 to 0.2% by weight of at least one alkali metal phosphate and c) water, as the remainder to make up to 100% by weight.
Claim 3
Dependent Claim
105 words
A de-icing agent as claimed in claim 1, consisting essentially of a) 25 to 60% by weight of sodium acetate or potassium acetate or a mixture of the two, b) 0.03 to 0.5% by weight of at least one water-soluble triazole compound or at least one water-soluble imidazole compound or a mixture of the two, the triazole compound and the imidazole compound being selected from the group consisting of benzotriazole, tolyltriazole and imidazole, and b') 0.03 to 0.2% by weight of sodium phosphate or potassium phosphate or a mixture of the two and c) water, as the remainder to make up to 100% by weight.
Claim 4
Dependent Claim
32 words
A process for melting snow and ice on traffic surfaces, which comprises applying an effective amount of a de-icing agent as claimed in claim 1 to the traffic surfaces to be treated.
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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) | 1996-08-23 | 1997-02-22 | 1997-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-23 | 2001-02-22 | 2001-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-23 | 2005-02-22 | 2005-08-24 | $7700.00 | Window Closed / Lapsed |