Dispersions, Resins and Additives, North America
Defoamer additive

EFKA® SI 2038

Silicone-based defoamer for polyurethane, acid-cure and NC wood varnishes with good compatibility.

EFKA® SI 2038 is a silicone-based defoamer for solvent-based coatings. It has a physical form of clear, colorless liquid. EFKA® SI 2038 prevents the formation of foam and blisters during the manufacturing and application of solvent-based wood finishes. It has very good compatibility properties which make it extremely suitable for use in clear coatings. Recommended applications include polyurethane coatings, unsaturated polyester systems, acid-curable coatings and NC lacquers.

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Material safety datasheet (United States - Spanish)
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Located outside of North America? Visit our global website here.


Notice Under California Consumer Privacy Act (“CCPA”)
Please be aware that by registering with BASF to learn more about products and services, making purchases, or initiating other business transactions with BASF, BASF will be collecting certain personal information about you and your internet activity for specific business purposes. For a description of the information collected about you and the business purposes for which that information is used, please click here: Table III Data Collection Purpose. For further information about BASF’s overall data privacy practices, please review BASF’s Privacy Policy, which may be accessed here: https://www.basf.com/us/en/legal/data-protection.html