BYK-330

Ambient-curing Plastic Systems
Special Features and Benefits
BYK-330 is a highly effective silicone additive and provides a strong reduction in surface tension. It thereby improves the wetting of critical substrates such as molds treated with release agents. It also prevents the formation of craters or fish eyes and facilitates the acceptance of spray mist or dust.
Recommended Use
BYK-330 is recommended for systems based on unsaturated polyester resins, such as gel coats.
Recommended Levels
0.1-0.3% additive (as supplied) based upon total formulation. The above recommended levels can be used for orientation. Optimal levels are determined through a series
of laboratory tests.
Incorporation and Processing Instructions
The additive can be incorporated during any stage of the production process, including post-addition. It has proven successful to add the additive at the end of the process to avoid any foam stabilization.
Special Note
Unlike so-called silicone oils, this additive is very user-friendly. Nevertheless, it should be determined in a series of tests whether surface defects occur in certain systems.