Construction Additives
POLYMERIC

FOAMSTAB AC 300

Solvent-based defoamer and de-aerating additive engineered for industrial and automotive coating systems. Excellent compatibility with high-build systems.

Industrial & Automotive Coatings Defoamer Solvent-Based
Technical Specifications
Chemistry Polymeric Acrylic / De-aerating Solution
Classification Polymeric Defoamer
System Type Solvent-Based
Recommended Addition 0.1 – 0.6% Total Weight
Compatibility High-Build Resin Systems
✓ Superior De-aeration for High-Build Coating Systems

Key Performance Benefits

  • Automotive Quality Finish
    Formulated to eliminate microfoam and popping without affecting surface clarity or Distinctness of Image (DOI).
  • High-Build Compatibility
    Delivers excellent resin compatibility in thick-layer industrial coatings without inducing haze or surface defects.
  • Rapid De-aeration
    Provides fast bubble displacement during airless and conventional spray applications for smooth, defect-free films.
  • Recoatability Safety
    Free from problematic surface-active compounds that can adversely affect intercoat adhesion.

Recommended Applications

  • Automotive OEM & Refinish
    Solvent-borne basecoats, clearcoats, and primer surfacers for premium automotive finishes.
  • Industrial Coatings
    Heavy-duty protective machinery coatings, coil coatings, and transportation finishes.
  • High-Build Systems
    High-solids polyurethane, acrylic-isocyanate, and epoxy topcoat formulations.
  • Specialty Lacquers
    High-gloss wood finishes and solvent-based industrial enamels requiring excellent air release.

Typical Physical Properties

Property Parameter Test Specification / Unit
Chemical Description Polymeric air-release agent in organic solvent
Appearance Clear to slightly amber liquid
Active Content 40 – 50%
Solvent Carrier Aromatic Hydrocarbon / Ester blend
Incorporation Post-addable or mill-base addition

Dosage & Processing Guidelines

The recommended addition rate for FOAMSTAB AC 300 is 0.1% to 0.6% based on the total formulation weight.

  • Timing
    Can be incorporated during the pigment dispersion (grind) phase or post-added into the finished let-down under medium shear.
  • Spray Systems
    Particularly effective in high-pressure airless and electrostatic spray application setups.
  • Testing Recommendation
    Conduct a ladder study to optimize de-aeration efficiency while maintaining excellent surface optical clarity.

💡 Formulator Insight & Lab Tip

In automotive clearcoats and high-gloss industrial finishes, traditional silicone defoamers often carry a risk of orange peel or telegraphing. FOAMSTAB AC 300 utilizes a tailored polymeric matrix that targets entrapped solvent microbubbles directly while preserving high distinctness of image (DOI) and optimal leveling.

Related Technical Articles & Case Studies

Preventing Solvent Popping in High-Solids Automotive Clearcoats

Explore techniques for balancing solvent evaporation rates with polymer-based de-aeration to achieve defect-free automotive finishes.

Read Article

Microfoam vs. Macrofoam in Solvent-Borne Industrial Coatings

Learn how selecting the right additive chemistry helps eliminate surface voids, pinholes, and optical defects in industrial coatings.

Read Article

Optimizing Airless Spray Performance in High-Build Finishes

Discover how polymeric defoamers minimize bubble entrapment and improve film appearance under high-pressure airless spray conditions.

Read Article

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