Multi-branched mannich base corrosion inhibitor and preparation method thereof
US-9493399-B2 · Nov 15, 2016 · US
Compositions and methods for inhibiting corrosion in gas turbine air compressors
US9758877B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9758877-B2 |
| Application number | US-201414769499-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 28, 2014 |
| Priority date | Mar 1, 2013 |
| Publication date | Sep 12, 2017 |
| Grant date | Sep 12, 2017 |
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- Title
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Abstract
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Methods and compositions are disclosed for inhibiting corrosion on metal surfaces of gas turbine air compressors. The methods comprise contacting the metal surfaces with a corrosion inhibiting composition comprising at least one filming amine.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of inhibiting corrosion or metal surfaces of gas turbine air compressors by contacting said metal surfaces with a corrosion inhibiting composition, said composition having the formula Polyamine blend Range (wt %) cyclohexylamine 0-40 morpholine 0-15 monoethanolamine 7-30 N,N-dimethylaminopropylamine 0-50 N,N-diethylaminoethanol 0-15 (Z)-N-9-octadecenyl-1,3- 5-20 propanediamine (Z)-9-octadecene-1-amine 1-5 demineralized or deionized water Balance (0-65). 2. The method of claim 1 , wherein said metal surfaces are exposed to moisture and/or water and/or an aqueous solution during and/or after treatment, and wherein said moisture and/or water and/or an aqueous solution has about 1,000 to 10,000 parts-per-billion (ppb by weight) of dissolved oxygen (O 2 ) therein. 3. The method of claim 1 , wherein the method further comprises contacting said metal surfaces with a citric acid solution before contacting said metal surfaces with said composition. 4. The method of claim 3 , wherein the method further comprises rinsing said metal surfaces with water after contacting said surfaces with said citric acid solution and before contacting said metal surfaces with said composition.
Assignees
Inventors
Classifications
- C23F11/141Primary
Amines; Quaternary ammonium compounds · CPC title
Ventilation · CPC title
- C23F11/00Primary
Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent (adding inhibitors to mineral oil, fuels, or lubricants C10; adding inhibitors to pickling solutions C23G) · CPC title
the liquid having chemical or dissolving effect · CPC title
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Frequently asked questions
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- What does patent US9758877B2 cover?
- Methods and compositions are disclosed for inhibiting corrosion on metal surfaces of gas turbine air compressors. The methods comprise contacting the metal surfaces with a corrosion inhibiting composition comprising at least one filming amine.
- Who is the assignee on this patent?
- Gen Electric
- What technology area does this patent fall under?
- Primary CPC classification C23F11/141. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 12 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).