US5127954A
Expired / Lapsed
US
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Corrosion inhibiting systems, products containing residual amounts of such systems, and methods therefor
Assignee: Domtar Inc
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Filing: 1990-12-04
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Granted: 1992-07-07
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Expires: 2010-12-04
Abstract
Abstract The corrosion inhibiting systems comprise at least one of the following: sodium fluorophosphate, and a water soluble salt of phosphonic acid derivatives having the general formula RnR1N(CH2PO3H2)2-n wherein Rn and R1 are each independently selected from a member selected from the group consisting of alkyl, aminoalkyl and N-hydroxyalkyl and n is an integer selected from 1 and 0. The methods comprise laying on a surface a system as defined above. The invention also discloses deicers, paints and other corrosion inhibitors in numerous carriers. Products containing at least residual amounts of a system as defined above are also disclosed.
Inventors
- 👤 Allan Johnston
- 👤 Dean Mason
- 👤 Darren F. Lawless
- 👤 Terrence E. Peel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:21
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/18; C23F11/187; C09; C09K; C09K3/00; C09K3/18; C09K3/185; C09K5/00; C09K5/20; C23F11/10; C23F11/167; C23F11/1676
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
21 words
A reinforced concrete containing at least residual amounts of a deicer comprising a corrosion inhibiting system having at least sodium fluorophosphate.
Claim 2
Dependent Claim
21 words
A reinforced concrete containing at least residual amounts of a deicer comprising a corrosion inhibiting system having at least sodium fluorophosphate.
Claim 3
Dependent Claim
38 words
The concrete as defined in claim 1, wherein said deicer comprising a corrosion inhibiting system contains at least 70% by weight of a deicer and at least 0.25% by weight of said corrosion inhibiting system containing sodium fluorophosphate.
Claim 4
Dependent Claim
38 words
The concrete as defined in claim 2, wherein said deicer comprising a corrosion inhibiting system contains at least 85% by weight of a deicer and at least 0.25% by weight of said corrosion inhibiting system containing sodium fluorophosphate.
Claim 5
Dependent Claim
13 words
The concrete as defined in claim 2, wherein said deicer is sodium chloride.
Claim 6
Dependent Claim
16 words
The concrete as defined in claim 2, wherein said corrosion inhibiting system is essentially sodium fluorophosphate.
Claim 7
Dependent Claim
13 words
The concrete as defined in claim 3, wherein said deicer is sodium chloride.
Claim 8
Dependent Claim
22 words
The concrete a defined in claim 2, wherein said deicer comprising a corrosion inhibiting system is essentially sodium chloride and sodium fluorophosphate.
Claim 9
Dependent Claim
39 words
The concrete as defined in claim 1, wherein said deicer comprising a corrosion inhibiting system contains at least 90% by weight of a deicer and from 0.25% to 10% by weight of said corrosion inhibiting system containing sodium fluorophosphate.
Claim 10
Dependent Claim
18 words
The concrete as defined in claim 2, wherein said corrosion inhibiting system contains sodium fluorophosphate and sodium silicate.
Claim 11
Dependent Claim
31 words
The concrete as defined in claim 9, wherein said deicer is at least one corrosive deicer selected from the group consisting of: sodium chloride, calcium chloride, magnesium chloride and potassium chloride.
Claim 12
Dependent Claim
31 words
The concrete as defined in claim 8, wherein said deicer is at least one corrosive deicer selected from the group consisting of: sodium chloride, calcium chloride, magnesium chloride and potassium chloride.
Claim 13
Dependent Claim
23 words
The concrete as defined in claim 2, wherein said corrosion inhibiting system is sodium fluorophosphate and sodium silicate in a weight ratio 1-10:1-2.5.
Claim 14
Dependent Claim
23 words
The concrete as defined in claim 2, wherein said corrosion inhibiting system is sodium fluorophosphate and sodium silicate in a weight ratio 1:1.
Claim 15
Dependent Claim
37 words
The concrete as defined in claim 1, wherein said deicer is a corrosive deicer having at least 95% by weight of sodium chloride and at least 0.25% by weight of said corrosion inhibiting system containing sodium fluorophosphate.
Claim 16
Dependent Claim
20 words
The concrete as defined in claim 14 having as corrosion inhibiting system, 3±0.5% by weight of a sodium fluorophosphate system.
Claim 17
Dependent Claim
21 words
The concrete as defined in claim 1, wherein said corrosion inhibiting system is sodium fluorophosphate, cocoamide and a phosphonic acid derivative.
Claim 18
Dependent Claim
27 words
The concrete as defined in claim 1, wherein said at least residual amounts of a deicer comprising a corrosion inhibiting system is dissolved in a suitable solvent.
Claim 19
Dependent Claim
35 words
The concrete as defined in claim 1, wherein said at least residual amounts of a deicer comprising a corrosion inhibiting system is dissolved in an aqueous medium in the form of a substantially saturated solution.
Claim 20
Dependent Claim
15 words
The concrete as defined in claim 1 which further includes at least one soil conditioner.
Claim 21
Dependent Claim
15 words
A reinforced concrete containing rebars, said concrete containing at least residual amounts of sodium fluorophosphate.
Claim 22
Dependent Claim
15 words
A reinforced concrete containing rebars, said concrete containing at least residual amounts of sodium fluorophosphate.
Claim 23
Dependent Claim
17 words
The reinforced concrete as defined in claim 20, wherein said sodium fluorophosphate is in a suitable carrier.
Claim 24
Dependent Claim
13 words
The concrete as defined in claim 21 comprising sodium fluorophosphate and sodium silicate.
Claim 25
Dependent Claim
21 words
The concrete as defined in claim 21 comprising sodium fluorophosphate and sodium silicate in a weight ratio of 1-10 to 1-2.5.
Claim 26
Dependent Claim
14 words
The concrete as defined in claim 24 wherein said weight ratio is about 1:1.
Claim 27
Dependent Claim
14 words
The concrete as defined in claim 21 comprising an aqueous solution of sodium fluorophosphate.
Claim 28
Dependent Claim
19 words
The concrete as defined in claim 25 being in said aqueous solution, at a concentration substantially close to saturation.
Claim 29
Dependent Claim
23 words
The concrete as defined in claim 21 comprising sodium fluorophosphate present in a member selected from the group consisting of emulsions and suspensions.
Claim 30
Dependent Claim
12 words
The concrete as defined in claim 21 wherein said carrier is sand.
References Cited (Backward Citations)
US4613450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-07-07 | 1996-01-06 | 1996-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-07 | 2000-01-06 | 2000-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-07 | 2004-01-06 | 2004-07-07 | $7700.00 | Window Closed / Lapsed |