Solution for Defoaming in Water-Based Coatings | Chemi Tech Efficient Defoamer Guide

In the production and application of water-based coatings, excessive foam often leads to surface defects and reduced production efficiency. Excessive bubbles can compromise coating smoothness and appearance, causing material waste and inconsistent results. To tackle these challenges, Chemi Tech has developed a high-performance defoamer series designed for water-based systems, delivering reliable and scientific solutions.  

The main causes of foam include mixing, application shear, and interactions among surfactants in the formulation. Without proper control, bubbles become trapped, resulting in craters, fish-eyes, or pinholes that affect finish quality and durability. Chemi Tech defoamers utilize modified polysiloxane and specialized polymers to rapidly break foam and suppress re-foaming, offering excellent compatibility without impacting transparency or color.  

A three-step solution is recommended: First, add 0.1%-0.5% defoamer during production under low-speed dispersion to minimize air entrainment. Second, conduct defoaming tests before application to adjust dosage for varying viscosity. Third, maintain a stable environment during curing to prevent secondary foaming.  

A building coatings company faced issues with excessive foam and surface imperfections in their interior wall paint. By adopting Chemi Tech Defoamer KM-461 at 0.3% dosage during ingredient mixing, foam was reduced immediately, achieving a smoother coating surface and lowering costs associated with rework.  

Chemi Tech defoamers are suitable for diverse water-based systems, including latex paints, industrial coatings, and waterproofing layers, helping users enhance product quality and operational efficiency.