US4613384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibitor
Assignee: Syngenta Ltd
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Filing: 1985-10-16
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Granted: 1986-09-23
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Expires: 2005-10-16
Abstract
Abstract The invention discloses a process to inhibit corrosion of mild galvanized steel by treatment with an optionally substituted bis(oximinomethyl)alkyl phenol, especially 2,6-bis(oximinomethyl)-4-nonyl or dodecyl phenols.
Inventors
- 👤 Glyn R. John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:21
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/08; C09D5/082; C09D5/086; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/147
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
46 words
A process for the inhibition of the corrosion of metals which comprises treating the metal with an optionally substituted 2-6bis(oximinomethyl)-4-alkyl phenols of formula (I) ##STR2## wherein R is an alkyl substituent containing from 7 to 13 carbon atoms and X is hydrogen or an optional substituent.
Claim 2
Dependent Claim
46 words
A process for the inhibition of the corrosion of metals which comprises treating the metal with an optionally substituted 2-6bis(oximinomethyl)-4-alkyl phenols of formula (I) ##STR2## wherein R is an alkyl substituent containing from 7 to 13 carbon atoms and X is hydrogen or an optional substituent.
Claim 3
Dependent Claim
39 words
A process according to claim 1 characterised in that the substituted bis (oximinomethyl)alkylphenol is in the form of a solution in an organic solvent or in the form of an aqueous emulsion of a solution in an organic solvent.
Claim 4
Dependent Claim
16 words
A process according to claim 1 characterised in that the bis(oximinomethyl)alkylphenol is 2,6-bis(oximinomethyl)-4-nonylphenol or 2,6-bis (oximinomethyl)-4-dodecylphenol.
Claim 5
Dependent Claim
19 words
A process according to claim 1 characterised in that the bis (oximinomethyl)alkylphenol is present in a surface coating composition.
Claim 6
Dependent Claim
20 words
A process according to claim 4 characterised in that the surface coating composition is a paint or a primer paint.
Claim 7
Dependent Claim
18 words
A process according to claim 1 characterised in that the metal is iron, zinc, copper, tin or aluminium.
Claim 8
Dependent Claim
18 words
A process according to claim 6 characterised in that the metal treated has a lightly rusted iron surface.
References Cited (Backward Citations)
US4466846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-22 | 1990-03-24 | 1990-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-22 | 1994-03-24 | 1994-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-22 | 1998-03-24 | 1998-09-23 | $7700.00 | Window Closed / Lapsed |