Description
Polyether-Ester Defoamer
Polyether-ester defoamers are developed by reacting polyether defoamers with fatty acids or other organic acids. This process retains some functional groups of the polyether base while introducing ester groups, which reduce hydrogen bonding and improve dispersibility and foam suppression in specific applications. These defoamers not only maintain the strong antifoaming performance of polyether defoamers but also offer enhanced dispersibility and longer-lasting effects.
Different organic acids may be selected for esterification depending on the industry’s requirements. Blending with other polyethers or partial hydrolysis may be used to optimize performance for specific applications.
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Model
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Appearance
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pH
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Solid Content
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Viscosity (25°C)
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Application Areas
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HC-12
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Yellow to light brown transparent liquid
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5.0–8.0
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≥99.8%
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200–2000 mPa·s
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Aeration tanks, landfill leachate, slag washing
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HC-12C
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Yellow to light brown transparent liquid
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5.0–8.0
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10%
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200–2000 mPa·s
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Landfill leachate, papermaking white water
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