HomeProducts Antifoam ShinEtsu KS-603 - Epoxy Silicone Oil De-foamer Resin Additive
ShinEtsu KS-603 - Epoxy Silicone Oil De-foamer Resin Additive

ShinEtsu KS-603 - Epoxy Silicone Oil De-foamer Resin Additive

It is specifically designed for defoaming high-viscosity synthetic resin systems, especially opaque electronic potting compounds. Even a minimal addition achieves optimal results.
PRODUCTS DESCRIPTION

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.


Application
  • 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.


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