Architectural — Process Challenge

Defoamers & Antifoam for Waterborne Coatings

Surfactants and high-speed dispersion entrain air; foam must be knocked down during manufacture and during application without leaving cratering side-effects
Why It Matters
Surfactants and high-speed dispersion entrain air; foam must be knocked down during manufacture and during application without leaving cratering side-effects
Solution Approach

Surfactants and high-speed dispersion entrain air; foam must be knocked down during manufacture and during application without leaving cratering side-effects RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.

Typical Formulation Workflow
1
System & Substrate Assessment
Define the binder system (waterborne, solventborne, UV, powder), substrate, cure, and the VOC, durability, and appearance targets.
2
Additive & Resin Selection
Match resins, pigments and fillers, dispersants, rheology modifiers, defoamers, or biocides to the formulation and compatibility window.
3
Lab Let-Down & Optimization
Dial in loading and addition order through lab let-downs, checking dispersion, rheology, film properties, and storage stability.
4
Application & Performance Testing
Validate on the real application method and substrate, tracking gloss, adhesion, sag, cure, and weathering before scale-up.
Recommended Chemistries (2)
Food-Grade Silicone Antifoam Emulsion (10-50% Active)
CAS 63148-62-9
Silicone Fluids & Oils
Defoaming / Foam Control
Emulsified PDMS droplets enter the foam lamella, spread to displace stabilizing surfactant, and rupture the film
Full Details
Silica Dimethyl Silylate
CAS 68611-44-9
Mineral Fillers & Pigments
Defoaming / Foam Control
Hydrophobic silica acts as the antifoam particle that de-wets the foam film and ruptures bubble walls, boosting silicone-oil defoamer efficiency
Full Details

Need help selecting the right chemistry?

Our team can help with grade selection, dosage guidance, and multi-origin sourcing.

Request Quote All Coatings & Construction Problems
Request Quote