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Platinum-based catalyst designed for efficient hydrosilylation reactions in silicone emulsion systems.
Stabilized aqueous emulsion format enabling safe handling, easy dispersion, and reduced VOC emissions.
Excellent shelf stability with minimal sedimentation or phase separation under recommended storage conditions.
Low-temperature activity enhances cure performance in ambient-cure and low-bake coating formulations.
Compatible with a broad range of functional siloxanes and emulsified silicone polymers.
Waterborne silicone release coatings for paper, film, and foil substrates.
Emulsion-based anti-foam and defoamer concentrates for industrial process fluids.
Crosslinking agent in silicone-modified acrylic and hybrid polymer emulsions.
Catalyst for functionalized silicone emulsions used in textile softeners and fabric finishes.
Enabling component in low-VOC, high-solids silicone-based protective coatings.
| Chemical Type | Platinum(0) complex in aqueous emulsion |
| Product Form | Opaque white to off-white liquid emulsion |
| Appearance | Homogeneous, non-settling emulsion |
| pH (1% aqueous dilution) | 6.0 – 7.5 |
| Platinum Content (wt%) | Approx. 0.3 – 0.4% |
| Viscosity (25°C, mPa·s) | 50 – 200 (Brookfield, spindle #1, 6 rpm) |
| Recommended Storage Temperature | 5 – 30°C (41 – 86°F) |
| Primary Applications | Hydrosilylation catalysis in water-based silicone systems |
Q1: What is the primary function of Dow SYL-OFF EM 7975 in silicone release coatings?
A: Dow SYL-OFF EM 7975 is a platinum-based catalyst emulsion designed to promote efficient hydrosilylation crosslinking between silicone polymers and functional silanes in aqueous release coating formulations. It enables rapid, low-temperature cure while maintaining colloidal stability in water-based systems.
Q2: Is EM 7975 compatible with other common additives used in paper and film release coatings?
A: Yes, EM 7975 is formulated for compatibility with standard anionic and nonionic surfactants, rheology modifiers, and silicone resins commonly used in waterborne release systems. However, it is sensitive to catalyst poisons such as sulfur-, nitrogen-, phosphorus-, or heavy metal-containing compounds — these should be avoided or carefully evaluated in the final formulation.
Q3: How should EM 7975 be incorporated into a coating formulation?
A: EM 7975 is typically added during the final stage of formulation, after pH adjustment and under gentle mixing conditions to avoid shear-induced destabilization. It is recommended to maintain formulation pH between 5.0 and 8.0 and to avoid prolonged exposure to elevated temperatures prior to application or curing.
Q4: Can EM 7975 be used in food-contact release applications?
A: EM 7975 is intended for industrial release coating applications where regulatory compliance is determined by the full formulation and end-use conditions. Customers must conduct their own evaluation and validation to confirm suitability for food-contact or other regulated applications, including migration testing and compliance with applicable local regulations.
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