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SILRES® SY 231 is a solventless, liquid, reactive, methoxyfunctional methyl-phenyl polysiloxane with a narrow molecular weight distribution. It is utilized for enhancing the weather and heat resistance of organic resins. This product can be employed as a cold blend additive, where it is directly mixed with the organic resins, or as a chemically bound intermediate, where it is chemically incorporated into the structure of organic polymers. By incorporating SILRES® SY 231, the resulting materials exhibit improved resistance to weathering and heat, making them suitable for applications requiring enhanced durability and performance.

Chemical Family: Silicones

Compatible Substrates & Surfaces: Wood

Features: Heat Resistance, Weather Resistance

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Chemical Family
CASE Ingredients Functions
Technologies

Features & Benefits

Labeling Claims
CASE Ingredients Features

Applications & Uses

Compatible Substrates & Surfaces
Applications
  • Industrial Wood Coatings
  • Resin Modification
  • Industrial Coatings
  • Coil Coatings
Application Details

SILRES® SY 231 is highly suitable for introducing a compatible silicone component into other binder systems to increase the weathering or heat resistance.

Properties

Physical Form
Appearance
Clear light straw-colored liquid
Typical Properties
ValueUnitsTest Method / Conditions
Alkoxy Equivalent222
Density (at 20°C)1.14g/cm³DIN 51757
Dynamic Viscosity (at 25°C)approx. 120 mPa·sDIN 51562
Refractive Index (at 25°C)1.5 - 1.505
Resin Solidapprox. 89wt %
Volatile Content (150°C, 1 hour, 5 g)approx. 2 wt %
Properties
  • Used to improve the weather and heat resistance of organic resins.
  • Is a solvent-free liquid resin.
  • Is FDA 21 CFR 175.300 and BfR XV compliant.
  • Can be used as a cold blend as well as chemically bound intermediates on organic polymers.

Regulatory & Compliance

Packaging & Availability

Country Availability
Regional Availability
  • Africa
  • Asia
  • Europe
  • Latin America
  • North America
  • Oceania
Packaging Information
  • 1000 kg IBC
  • 220 kg drum
  • 30 kg can

Storage & Handling

Storage Information

Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.