Silicone defoamer containing foaming polymer
KEPERPOL®-703
It is the standard choice for safe, versatile silicone defoamer.good compatibility, rapid bubble breaking ability.
Product overview
KEPERPOL®-703 is a universal type silicone defoamer ,has rapid defoaming ability in each coating system .
Physical data
1. Effective ingredient: Polysiloxane and foaming polymer
2. Content: ≦2%
3. Solvent: CYC/Alkyl benzene/MIBK
Product features
1.It is the standard choice for safe, versatile silicone defoamer,can effectively reduce the pinhole and shrinkage hole of the paint film.
2.Excellent compatibility, suitable for all kinds of varnish, high gloss finish.
3.Rapid bubble breaking ability,can effectively break the bubbles produced in the production, packaging and construction process of paints and inks.
Application test
We tested and compared the comprehensive performance of KEPERPOL®-703 and B-066N in Wood PU coating formulas.
Compare items and methods
1.Compatibility: The defoamer is added to coatings at a ratio of 0.2%, and tested the transparency of the paint.
2. Shrinkage tendency/levelling effect: Added 1% defoamer in paint,spraying after dilution.Observe the shrinkage phenomenon of wet film and the leveling effect of dry film.
3.Defoaming ability :Add 0.2% defoaming agent to the paints, and observe the number of foam and the breaking speed after shaking five minutes.
Test result
Test item |
Blank |
B-066N |
KEPERPOL®-703 |
Compatibility |
△ |
△ |
△ |
Inhibiting foam properties |
△- |
○ |
○ |
Bubble breaking ability |
△ |
○ |
○ |
Levelling effect |
◎ |
◎ |
◎ |
Shrinkage tendency(1%) |
No |
Slight shrinkage |
No |
◎ : Excellent, ○ : good, △ : average

The test results show that the comprehensive performance of KEPERPOL®-703 is similar to B-066N. Please contact us for more information.
Additive amount (Supply form)
For the total amount of formula: 0.1-1%
The best dosage needs to be obtained through testing
Application field
Suitable for solvent-based coatings and inks
Shelf life and packaging
1. The shelf life is two years, starting from the date of production.When stored, the container should be sealed well, and the temperature should be between 0-40℃
2. Packaging: 25KG/160 KG ,iron bucket.