Claims
- 1. A dispersant prepared from a formulation comprising:
(a) the reaction product of a polyalkyl polyamine, an alkylphenol and an aldehyde; and (b) a polyalkyl acrylate polymer; wherein the two components are present in a weight ratio of a:b of about 2:1.
- 2. The dispersant of claim 1 wherein the reaction product of a polyalkyl polyamine, an alkylphenol and an aldehyde is a Mannich condensate.
- 3. The dispersant of claim 2 wherein the Mannich condensate is a 1:1 weight mixture of a first Mannich condensate prepared using a comparatively high molecular weight alkylphenol and a second Mannich condensate which is prepared using a comparatively low molecular weight alkylphenol.
- 4. The dispersant of claim 3 wherein the first Mannich condensate is prepared using a polybutylphenol that has 26 repeating butylene units.
- 5. The dispersant of claim 3 wherein the second Mannich condensate is prepared using nonylphenol.
- 6. The dispersant of claim 3 wherein the dispersant does not function as a hydrocarbon emulsifier.
- 7. The dispersant of claim 1 wherein the reaction product of a polyalkyl polyamine, an alkylphenol and an aldehyde and the polyalkyl acrylate polymer are present at a ratio of 2:0.5 to 2:1.5.
- 8. The dispersant of claim 7 wherein the reaction product of a polyalkyl polyamine, an alkylphenol and an aldehyde and the polyalkyl acrylate polymer are present at a ratio of 2:0.8 to 2:1.2.
- 9. The dispersant of claim 8 wherein the reaction product of a polyalkyl polyamine, an alkylphenol and an aldehyde and the polyalkyl acrylate polymer are present at a ratio of 2:0.9 to 2:1.1.
- 10. The dispersant of claim 1 further comprising a hydrocarbon solvent.
- 11. The dispersant of claim 10 wherein the hydrocarbon solvent is kerosene.
- 12. A process for preventing fouling of compressor blades used to compress gasses comprising depositing a dispersant onto blades of a compressor to be protected from fouling, the dispersant being prepared from a formulation comprising: (a) the reaction product a polyalkyl polyamine, an alkylphenol and an aldehyde; and (b) a polyalkyl acrylate polymer; wherein the two components are present in a weight ratio of a:b of about 2:1.
- 13. The process of claim 11 wherein the dispersant does not cause foaming in knockout pots receiving materials from the compressor.
- 14. The process of claim 11 wherein the dispersant is deposited onto the blades of a compressor in the form of an aerosol.
- 15. The process of claim 14 wherein the aerosol is injected into the gas stream being compressed upstream from the compressor blades.
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application claims priority from provisional application 60/345,256 filed Jan. 3, 2002.
Provisional Applications (1)
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Number |
Date |
Country |
|
60345256 |
Jan 2002 |
US |