Silicone-Based Defoamer for Paints and Coatings

Borchers® AF 1270 is a silicone-based defoamer and air release agent for solvent-based systems. This additive contains polysiloxane.


Benefits of Silicone-Based Defoamers and Air Release Agents

Borchers® AF 1270 is a mixture of fluorinated, modified polysiloxane diluted in butyl acetate. This defoamer solution improves surface leveling and has good binder compatibility. It has good gloss retention and low haze in formulated systems. As an air release agent, Borchers® AF 1270 supports fast air release of entrapped air on the film surface. This solution has little impact on film integrity.


Ideal applications include solvent-based 2K-polyurethane systems, unsaturated polyesters, alkyds, epoxies, and UV systems.


  • Physical Characteristics

    AppearanceClear liquid
    Non-volatile content1.3 – 2.0 % ISO 3251 (2g, 1h, 105 °C)
    Density0.82 – 0.94 g/ml ISO 2811-3 (25 °C)
    Flash point25 °C
    Refractive IndexNA

  • Features

    • Good binder compatibility
    • Contains anti-cratering properties as active ingredients including fluorinated, organo-modified polysiloxanes
    • Efficiency is independent of curing mechanism
    • Supports fast air release of entrapped air on the film
    • Has little impact on film integrity

  • Applications

    • Solvent-based epoxies
    • Unsaturated polyesters
    • Two-pack polyurethane systems
    • Alkyds
    • UV systems

  • Dosage

    Borchers® AF 1270 can be added to the formulation at any stage, including post addition. Usual amounts are approximately
    0.05 – 0.50 wt. % in formulation.

  • Storage

    Keep away from food, drink and animal feeding stuffs. Keep away from sources of ignition – no smoking. Store in original
    containers. Keep containers tightly closed in a dry, cool and well-ventilated place. Protect from frost, heat and sunlight. Keep
    at temperatures between 5 °C and 30 °C.

  • Safety

    Please refer to our material safety data sheet for information relating to product safety.

Registration :

For chemical inventory status, please review section 15 of the current SDS.

Click here to access the SDS portal.

For additional regulatory information, please contact [email protected].