US5853610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antifreeze and de-icing agent, especially for the de-icing of surfaces
Assignee: Lang and Co Chemisch Technische Produkte KG
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Filing: 1997-08-25
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Granted: 1998-12-29
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Expires: 2017-08-25
Abstract
Abstract An antifreeze and de-icing system containing a freezing point lowering chlorine containing inorganic substance like NaCl, MgCl2 or CaCl2 and admixed with the substance, a mixture of potassium carbonate and water soluble alkali silicate.
Inventors
- 👤 Gertrude Kaes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:39
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18; C09K3/185
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
102 words
An antifreeze and deicing agent, which consists essentially of: (a) at least one inorganic chloride selected from the group consisting of sodium chloride, calcium chloride and magnesium chloride as a freezing point-lowering defrosting substance; and (b) an additive to said freezing point-lowering reducing substance, said additive consisting essentially of a mixture of potassium carbonate and at least one water soluble alkali silicate wherein the alkali silicate amounts to 1 to 10% by weight of the additive with the balance potassium carbonate, and wherein the additive is present in an amount of 1 to 50% by weight of the antifreeze and deicing agent.
Claim 2
Dependent Claim
102 words
An antifreeze and deicing agent, which consists essentially of: (a) at least one inorganic chloride selected from the group consisting of sodium chloride, calcium chloride and magnesium chloride as a freezing point-lowering defrosting substance; and (b) an additive to said freezing point-lowering reducing substance, said additive consisting essentially of a mixture of potassium carbonate and at least one water soluble alkali silicate wherein the alkali silicate amounts to 1 to 10% by weight of the additive with the balance potassium carbonate, and wherein the additive is present in an amount of 1 to 50% by weight of the antifreeze and deicing agent.
Claim 3
Dependent Claim
26 words
The antifreeze and de-icing agent defined in claim 1 wherein said additive and said inorganic chloride are present in said agent in powder or granular form.
Claim 4
Dependent Claim
44 words
The antifreeze and de-icing agent defined in claim 1 wherein said alkali silicate has the composition M 2 O/SiO 2 with a molar ratio of M 2 O to SiO 2 of 1:1 to 1:3.3 where M=Na and of 1:1 to 1:3.9 when M=K.
Claim 5
Dependent Claim
21 words
The antifreeze and de-icing agent defined in claim 1 wherein said alkali silicate is a sodium silicate or a potassium silicate.
Claim 6
Dependent Claim
98 words
An antifreeze and de-icing agent for wet application, which consists essentially of: (a) at least one inorganic chloride selected from the group consisting of sodium chloride, calcium chloride and magnesium chloride as a freezing point-lowering substance; and (b) an additive to said freezing point-lowering substance, said additive consisting essentially of an aqueous solution containing 40 to 50% by weight potassium carbonate and 3 to 10% by weight of alkali silicate, based upon the weight of the solution, and wherein the additive is present in an amount of 5 to 40% by weight of the antifreeze and de-icing agent.
Claim 7
Dependent Claim
98 words
An antifreeze and de-icing agent for wet application, which consists essentially of: (a) at least one inorganic chloride selected from the group consisting of sodium chloride, calcium chloride and magnesium chloride as a freezing point-lowering substance; and (b) an additive to said freezing point-lowering substance, said additive consisting essentially of an aqueous solution containing 40 to 50% by weight potassium carbonate and 3 to 10% by weight of alkali silicate, based upon the weight of the solution, and wherein the additive is present in an amount of 5 to 40% by weight of the antifreeze and de-icing agent.
Claim 8
Dependent Claim
29 words
The antifreeze and de-icing agent for wet application defined in claim 5 wherein said additive is present in said agent in an amount of 10 to 30% by weight.
Claim 9
Dependent Claim
47 words
The antifreeze and de-icing agent for wet application defined in claim 5 wherein said alkali silicate has the composition M 2 O/SiO 2 with a molar ratio of M 2 O to SiO 2 of 1:1 to 1:3.3 where M=Na and of 1:1 to 1:3.9 when M=K.
Claim 10
Dependent Claim
24 words
The antifreeze and de-icing agent for wet application defined in claim 5 wherein said alkali silicate is a sodium silicate or a potassium silicate.
Claim 11
Dependent Claim
48 words
An additive to an inorganic chloride freezing point lowering defrosting substance, said additive consisting essentially of a mixture of potassium carbonate and at least one water soluble alkali silicate wherein the alkali silicate amounts to 1 to 10% by weight of the additive with the balance potassium carbonate.
Claim 12
Dependent Claim
48 words
An additive to an inorganic chloride freezing point lowering defrosting substance, said additive consisting essentially of a mixture of potassium carbonate and at least one water soluble alkali silicate wherein the alkali silicate amounts to 1 to 10% by weight of the additive with the balance potassium carbonate.
Claim 13
Dependent Claim
41 words
The additive defined in claim 9 wherein said alkali silicate has the composition M 2 O/SiO 2 with a molar ratio of M 2 O to SiO 2 of 1:1 to 1:3.3 where M=Na and of 1:1 to 1:3.9 when M=K.
Claim 14
Dependent Claim
18 words
The additive defined in claim 9 wherein said alkali silicate is a sodium silicate or a potassium silicate.
Claim 15
Dependent Claim
42 words
An additive to an inorganic chloride freezing point-lowering reducing substance, said additive consisting essentially of an aqueous solution containing 40 to 50% by weight potassium carbonate and 3 to 10% by weight of alkali silicate, based upon the weight of the solution.
Claim 16
Dependent Claim
42 words
An additive to an inorganic chloride freezing point-lowering reducing substance, said additive consisting essentially of an aqueous solution containing 40 to 50% by weight potassium carbonate and 3 to 10% by weight of alkali silicate, based upon the weight of the solution.
Claim 17
Dependent Claim
41 words
An additive defined in claim 12 wherein said alkali silicate has the composition M 2 O/SiO 2 with a molar ratio of M 2 O to SiO 2 of 1:1 to 1:3.3 where M=Na and of 1:1 to 1:3.9 when M=K.
Claim 18
Dependent Claim
18 words
The additive defined in claim 12 wherein said alkali silicate is a sodium silicate or a potassium silicate.
Claim 19
Independent Claim
95 words
A method of de-icing a surface or preventing ice formation on a surface, comprising: admixing with a freezing-point lowering defrosting substance in the form of at least one inorganic chloride selected from the group consisting of sodium chloride, calcium chloride and magnesium chloride, an additive consisting essentially of a mixture of potassium carbonate and at least one water soluble alkali silicate wherein the alkali silicate amounts to 1 to 10% by weight of the additive with the balance potassium carbonate; and depositing said inorganic chloride and said additive in a wet application on said surface.
Claim 20
Independent Claim
95 words
A method of de-icing a surface or preventing ice formation on a surface, comprising: admixing with a freezing-point lowering defrosting substance in the form of at least one inorganic chloride selected from the group consisting of sodium chloride, calcium chloride and magnesium chloride, an additive consisting essentially of a mixture of potassium carbonate and at least one water soluble alkali silicate wherein the alkali silicate amounts to 1 to 10% by weight of the additive with the balance potassium carbonate; and depositing said inorganic chloride and said additive in a wet application on said surface.
Claim 21
Independent Claim
90 words
A method of de-icing a surface or preventing ice formation on a surface, comprising: admixing with a freezing-point lowering defrosting substance in the form of at least one inorganic chloride selected from the group consisting of sodium chloride, calcium chloride and magnesium chloride, an additive consisting essentially of an aqueous solution containing 40 to 50% by weight potassium carbonate and 3 to 10% by weight of alkali silicate, based upon the weight of the solution; and depositing said inorganic chloride and said additive in a wet application on said surface.
Claim 22
Independent Claim
90 words
A method of de-icing a surface or preventing ice formation on a surface, comprising: admixing with a freezing-point lowering defrosting substance in the form of at least one inorganic chloride selected from the group consisting of sodium chloride, calcium chloride and magnesium chloride, an additive consisting essentially of an aqueous solution containing 40 to 50% by weight potassium carbonate and 3 to 10% by weight of alkali silicate, based upon the weight of the solution; and depositing said inorganic chloride and said additive in a wet application on said surface.
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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) | 2001-12-28 | 2002-06-29 | 2002-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-12-28 | 2006-06-29 | 2006-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-12-28 | 2010-06-29 | 2010-12-29 | $7700.00 | Window Closed / Lapsed |