ShinEtsu KS-603 - Epoxy Silicone Oil De-foamer Resin Additive
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It contains a variety of ingredients, including silicone and synthetic oil-based silicone. It is suitable for use in various water-based and oil-based systems and has excellent foam control and rapid foam breakdown, and exhibits defoaming activity from neutral to high pH values and a wide temperature range.
Products parameters
| Composition: | Silicone emulsion |
| Appearance: | Milky translucent |
| Solid content : | 65% |
| Packaging: | 16kg |
Key features
Chemical stability – Silicone fluids are almost totally chemically inactive. At room temperature, they show almost no effects from alkali solutions (up to 10%) or acidic solutions (up to 30%).
Solvent-based formulation – Enables fast dispersion in resin systems.
High active content (~65%) – Provides strong defoaming performance.
Low surface tension (~21.1 mN/m) – Enables rapid foam collapse.
Moderate viscosity (~300 mm²/s) – Allows easy handling and mixing.
Broad chemical compatibility – Works well with epoxy, acrylic, and other synthetic resins.
Resin Industry – Optimized for epoxy, polyester, PVC, and phenolic resins; improves defoaming and molding performance during casting, coating, and potting.
Paint Industry – Controls foam in solvent-based and high-viscosity coatings; enhances surface quality and prevents defects caused by trapped air.
Ink Industry – Effective in oil-based ink systems; reduces microfoam and improves print clarity and consistency.
Adhesive Industry – Especially suitable for epoxy adhesives; prevents bubble entrapment and maintains bonding strength and electrical properties.