US5714093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion resistant buffer system for metal products
Assignee: Elisha Holding LLC
•
Filing: 1994-10-21
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Granted: 1998-02-03
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Expires: 2014-10-21
Abstract
Abstract A system is disclosed for inhibiting the corrosion of ferrous and other metals by passivating the metals. The system includes novel buffered compositions which may be applied to metal products for preventing or retarding corrosion and methods for applying the buffered compositions to metal products such that corrosion protection of the products is achieved through passivation. The methods include an in-situ application to existing structures with metal reinforcement as well as applications to metal products during manufacture. Generally, the compositions may be in various forms and comprise a carrier component and one or more particulate pH buffer components. The particles of buffer are selected to retain the proximity of the metal at a pH at which the metal is passive to corrosion.
Inventors
- 👤 Robert L. Heimann
- 👤 William M. Dalton
- 👤 David R. Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:10
CPC Classifications
C; C23; C23F; C23F11/00; C09; C09D; C09D5/00; C09D5/08; C23C; C23C28/00; C23C30/00; E; E04; E04C; E04C5/00; E04C5/01; E04C5/015; F; F16; F16D; F16D69/00; F16D69/02; F16D2250/00; F16D2250/0038
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
27 words
A thixotropic gel composition for inhibiting corrosion of a metal wherein the gel comprises a combination of at least one alkali silicate and a carrier comprising polyalphaolefin.
Claim 2
Dependent Claim
27 words
A thixotropic gel composition for inhibiting corrosion of a metal wherein the gel comprises a combination of at least one alkali silicate and a carrier comprising polyalphaolefin.
Claim 3
Dependent Claim
34 words
A gel coating composition for improving the corrosion resistance of a zinc or an iron containing surface comprising a combination of a buffer comprising at least one alkali silicate and a carrier comprising polyalphaolefin.
Claim 4
Dependent Claim
34 words
A gel coating composition for improving the corrosion resistance of a zinc or an iron containing surface comprising a combination of a buffer comprising at least one alkali silicate and a carrier comprising polyalphaolefin.
Claim 5
Dependent Claim
43 words
A composition for improving corrosion and seize resistance of a metal surface comprising a combination of a carrier comprising at least one of synthetic oil, naturally occurring oil or wax and polymeric resin material, and a buffer comprising at least one alkali silicate.
Claim 6
Dependent Claim
43 words
A composition for improving corrosion and seize resistance of a metal surface comprising a combination of a carrier comprising at least one of synthetic oil, naturally occurring oil or wax and polymeric resin material, and a buffer comprising at least one alkali silicate.
Claim 7
Dependent Claim
25 words
The composition of any one of claims 1, 2 or 3 wherein said alkali silicate comprises at least one of potassium silicate and sodium silicate.
Claim 8
Dependent Claim
26 words
The composition of any one of claims 1, 2 or 3 wherein the composition further comprises an amount of a bactericide effective for inhibiting microbial growth.
Claim 9
Dependent Claim
11 words
The composition of claim 5 wherein the bactericide comprises zinc borate.
Claim 10
Dependent Claim
23 words
The composition of any one of claims 1, 2 or 3 wherein the buffer comprises less than 60% by volume of the composition.
Claim 11
Dependent Claim
30 words
The composition of claim 3 wherein the carrier comprises at least one member from the group consisting of acrylics, alkyds, vinyls, phenolics, fluoropolymers, latexes, polyester, silicone, polyurethane, polychloroprenes and epoxies.
Claim 12
Dependent Claim
57 words
The composition of claim 3 wherein the carrier comprises at least one synthetic oil comprising at least one member selected from the group consisting of alkylated aromatics, phosphate esters, perfluoroalky polyethers, chlorotrifluoroethylene, silahydrocarbons, phosphazenes, dialkylcarbonates, polyphenyl esters, alkyl benzenes, dibasic acid esters, polyolesters, polyglycols, olefin oligomers, polybutenes, cycloaliphatics, silicones, silicate esters, polyphenyl ethers, polyolefin and halogenated fluids.
Claim 13
Dependent Claim
32 words
The composition of claim 3 wherein the carrier comprises at least one member selected from the group consisting of polyethylene, polyvinyl acetate, polyamides, hydrocarbon resins, asphalt, bitumen, natural resinous materials and waxes.
Claim 14
Dependent Claim
28 words
The composition of claim 3 wherein the naturally occurring oil or wax comprises at least one member selected from the group consisting of linseed oil, putty and wax.
Claim 15
Dependent Claim
10 words
The composition of claim 3 wherein the carrier comprises polybutene.
Claim 16
Dependent Claim
29 words
The composition of any one of claims 1, 2 or 3 further comprising at least one additive selected from the group consisting of viscosity control and thermal resistivity additives.
Claim 17
Dependent Claim
24 words
The composition of any one of claims 1, 2 or 3 further comprising at least one alkali hydroxide and at least one salt thereof.
Claim 18
Dependent Claim
10 words
The composition of claim 3 wherein the carrier comprises polyglycol.
Claim 19
Dependent Claim
29 words
The composition of any one of claims 1, 2 or 3 further comprising at least one additive selected from the group consisting of silica, zircon, a fluoropolymer and dye.
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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) | 2001-02-02 | 2001-08-04 | 2002-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-02 | 2005-08-04 | 2006-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-02 | 2009-08-04 | 2010-02-03 | $7700.00 | Window Closed / Lapsed |