Corning FoamStar SI2293 is a powerful defoamer and degassing agent for water-based polymer emulsions in architectural and industrial coatings. It works with application methods like curtain, spray, roller, dip, and brush on wood, wood products, and metal, providing lasting foam control, latex paint compatibility, and a glossy finish. Suitable for emulsion/suspension polymerization (PVC, vinyl acetate, acrylic emulsions), it’s VOC-free, low-odor, mineral oil-free, regulation-compliant (2002/42/EU, EPA 24), and made of modified polydimethylsiloxane solution.
Highly effective as both a defoamer and degassing agent.
Specifically designed for water-based polymer emulsions in coatings.
Offers long-lasting foam control and compatibility with latex paints.
Maintains a glossy finish on coated surfaces.
VOC-free, low-odor, and mineral oil-free.
Compliant with 2002/42/EU and EPA 24 (US) regulations; no labeling required.
Chemically composed of a modified polydimethylsiloxane solution.
Used in architectural and industrial coatings with water-based polymer emulsions.
Applicable to various coating methods: curtain, spray, roller, dip, and brush.
Suitable for surfaces like wood, wood products, and metal.
Ideal for emulsion and suspension polymerization, especially PVC, vinyl acetate, and acrylic emulsions.
Product Name | FoamStar SI2293 |
Main Component | Modified polydimethylsiloxane solution |
Product Type | Defoamer and Degassing Agent |
Appearance | Not specifically described, presumably liquid like similar products |
VOC Content | VOC-free according to 2002/42/EU and EPA 24 (US) |
Odor | Low odor |
Mineral Oil Content | Mineral oil-free |
Application Areas | High-quality pure acrylic and acrylic copolymer latex paints; acrylic and polyurethane emulsion wood paints; water-based architectural coatings and industrial coatings based on polymer emulsions, applicable to curtain coating, spraying, rolling, dipping and brushing on wood, wood products and metal products; also suitable for emulsion polymerization and suspension polymerization, especially the preparation of PVC, vinyl acetate and acrylate emulsions |
Performance Characteristics | Provides long-lasting defoaming effect, compatible with high-grade latex paints, keeps coatings glossy; no delamination occurs during storage |
Dosage | Typically 0.5% - 1.5% of the total formulation |
Usage Method | Preferably added by strong stirring in the final stage of preparation. Can be added in batches to grinding materials or premixes during paint making |
Packing Specification | Packed in 30KG/60KG iron drums |
Storage Conditions | Store at room temperature, away from light, sealed and moisture-proof |
Shelf Life | 24 months |
Is it a Dangerous Chemical | No |
Q1: What types of formulations is FoamStar SI2293 best suited for?
A: FoamStar SI2293 is specifically designed for use in water-based industrial coatings, adhesives, sealants, and construction mortars where persistent foam can interfere with application, film formation, or surface appearance. Its silicone-polyether hybrid structure provides effective defoaming and air release without compromising compatibility or long-term stability.
Q2: How does SI2293 differ from conventional silicone or mineral oil defoamers?
A: Unlike traditional silicone defoamers, SI2293 features a tailored polyether-modified silicone architecture that enhances dispersion in polar systems and reduces the risk of surface defects such as craters or pinholes. It also offers improved compatibility and lower tendency to re-foam compared to many hydrophobic mineral oil–based alternatives.
Q3: Is FoamStar SI2293 compatible with biocides and other common additives?
A: Yes, SI2293 demonstrates broad compatibility with typical formulation components including dispersants, rheology modifiers, biocides, and pH adjusters. However, as with any additive, compatibility should be verified under actual formulation conditions—especially when used alongside highly ionic or strongly surfactant-rich systems.
Q4: What is the recommended addition method and timing?
A: For optimal performance, SI2293 is typically added during the let-down or post-addition stage, after high-shear mixing has been completed. Pre-dilution with water or a compatible solvent may improve uniform distribution, particularly in low-viscosity systems. Dosage generally ranges from 0.1% to 2% by weight of the total formulation, depending on foam severity and system sensitivity.
Q5: Does SI2293 affect gloss, clarity, or film integrity in finished applications?
A: When used within recommended dosage levels, FoamStar SI2293 does not adversely impact gloss retention, optical clarity, or mechanical film properties in standard applications. Its balanced hydrophilic-lipophilic character helps minimize interfacial disruption, supporting consistent performance across clear coats and pigmented systems alike.
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