矿物油有机硅消泡剂，不含VOC，用于水性乳胶漆，灰泥和胶粘剂。特别适用于颜料体积浓度20-70的体系。替换BYK®-034的不含APEO的产品。

Product Data
Composition
Mixture of paraffinic mineral oils and hydrophobic components. Contains silicone.
Typical Properties
The values indicated in this data sheet describe typical properties and do not constitute specification limits.
Density (20 °C): 0.88 g/ml
VOC content: < 1500 ppm
Does not contain alkyl phenol ethoxylates
Food Contact Legal Status
For the current food contact legal status, please contact our product safety department or
for further information.
Storage and Transportation
Separation possible. Mix well before use.
Applications
Coatings Industry
Special Features and Benefits
The defoamer has been specifically developed for universal use in APEO-free emulsions. Thanks to the addition
of a silicone, it achieves an excellent level of effectiveness. BYK-038 should preferably be used in emulsion
systems with a PVC range between 20 and 70.
Recommended Use
Particularly recommended for emulsion paints and high gloss emulsion systems but also for emulsion plasters.
The defoamer may also be used in the production of emulsion binders.
Recommended Levels
0.1-0.5 % additive (as supplied) based upon total formulation. In exceptional cases up to 0.8%.
The dosage levels are indicated for the purpose of orientation. Optimal dosage levels are determined through
series of tests.
Incorporation and Processing Instructions
Generally, 2/3 of the defoamer are added to the millbase and 1/3 is added to the letdown or the finished paint.
Sufficient shear forces are necessary for incorporation in order to avoid negative side effects.