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AVASIL 618

Our Products

Silicone Surfactant

AVASIL-L-618 is a silicone surfactant engineered to deliver excellent foam stability with superior cost-to-performance benefits. It offers broad processing latitude across all grades of conventional flexible foams,including very low-density formulations where high auxiliary blowing agent loadings typically cause instability

Key Performance Benefits:

  • Provides excellent foam processing latitude
  • Reduces density gradients in tall foam buns
  • Delivers flame-retardant performance comparable to Niax® Silicone L-5770
  • Enhances foam yield and production efficiency
  • Promotes fine, uniform cell structure
Physical Properties:
Appearance Clear, Straw Colored Liquid
Specific Gravity (25°C) 1.0313 g/cm³
Specific Gravity (55°C) 1.0079 g/cm³
Viscosity (25°C) 530
Flash Point 104 °C
Coefficient of Expansion 7.6 × 10⁻⁴

Processing Recommendation:

The performance features of AVASIL-618 are demonstrated by the effects that surfactant and tin catalyst concentration have on resulting foams. The two formulations were used to show the effect of AVASIL-618
Components Effects of Surfactant Effects of TIN
Polyol 100 100
Water 5.5 5.5
Methylene Chloride 10 10
Avasil 618 0.5 – 1.5 0.9
Elizamine (Amine) 0.2 0.2
Stannous Octoate 0.23 0.17 – 0.27
TDI 80/20 71.1 71.1
Index 112 1

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