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Free-flowing, non-dusting powder form for easy handling and dispersion in dry-blend processes.
Thermally stable silicone elastomer matrix enabling consistent performance up to 200 °C.
Excellent compatibility with thermoplastics, thermosets, and powder coatings without compromising cure kinetics.
Provides soft-touch surface feel and improved abrasion resistance in finished composites.
Low volatility and minimal extractables—meets stringent regulatory requirements for indirect food contact applications.
Functional additive in engineering thermoplastics (e.g., nylon, PBT) for enhanced impact modification.
Surface modifier in powder coating formulations to improve scratch resistance and gloss control.
Processing aid in rubber compounding to reduce mixing energy and improve filler dispersion.
Softening agent in silicone-based putties and moldable elastomer compounds.
Performance enhancer in specialty adhesives and sealants requiring thermal stability and flexibility.
| Chemical Type | High-molecular-weight polydimethylsiloxane (PDMS)-based crosslinked elastomer |
| Product Form | Free-flowing dry powder |
| Appearance | White to off-white granular powder |
| Particle Size (D50) | Approx. 80–120 µm |
| Bulk Density | 350–450 g/L |
| Volatile Content (150 °C, 2 h) | < 1.5 wt% |
| Key Features | Non-migrating, thermally stable, low compression set |
| Primary Applications | Thermoplastic modifiers, powder coatings, rubber & silicone compounding |
Q1: What is the primary function of DOWSIL EP-2600 in powder coating formulations?
A: DOWSIL EP-2600 is a functional silicone elastomer powder designed to enhance surface performance—particularly improving mar resistance, scratch resistance, and providing a soft-touch or silky feel—without significantly compromising film integrity or gloss retention in thermoset powder coatings.
Q2: How is DOWSIL EP-2600 incorporated into powder coating systems?
A: It is typically dry-blended with other formulation components during the premix stage prior to extrusion. Due to its free-flowing powder form and thermal stability, it disperses effectively during melt extrusion and remains compatible with common epoxy-polyester, polyester-TGIC, and acrylic-based binder systems.
Q3: Does DOWSIL EP-2600 affect cure behavior or crosslink density?
A: DOWSIL EP-2600 is chemically inert under standard powder coating cure conditions and does not participate in crosslinking reactions. It functions as a non-reactive additive, so it generally does not alter gel time, degree of cure, or network formation—though optimal loading should be confirmed via small-scale validation testing.
Q4: Is DOWSIL EP-2600 suitable for food-contact or medical-grade coatings?
A: While DOWSIL EP-2600 is based on high-purity silicone chemistry and meets typical requirements for low extractables, it is not pre-qualified for regulated food-contact or medical device applications. End-use compliance must be verified by the coating formulator against applicable regional regulations and end-product testing protocols.
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