Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- CASE Ingredients Functions
- Plastics & Elastomers Functions
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- CASE Ingredients Features
- Materials Features
- Ready-to-Use Product Features
- Reactivity
- The high boiling point of Dynasylan® 6498, together with its high flash point, gives it outstanding advantages with respect to safety and handling during processing.
- From an environmental viewpoint it should be noted that the amount of released hydrolysis ethanol (VOC) is significantly reduced compared to monomeric vinyl silanes.
Applications & Uses
- Markets
- Applications
- Compatible Polymers & Resins
- Plastics & Elastomers End Uses
- Use Level
- 0.67 phr
- Application Characteristics
- Dynasylan® 6498 is excellent as an adhesion promoter, dispersion and hydrophobation agent in mineral filled compounds.
- In the presence of moisture, the ethoxy groups of Dynasylan® 6498 hydrolyse to produce ethanol and reactive silanol groups.
- These silanol groups react with the filler via silicon-oxygen bridges.
- The vinyl functional groups of Dynasylan® 6498 react with the polymer phase in the presence of radicals: A major field of application for mineral-filled compounds is the cable industry.
- EPDM and EVA can be processed into highly filled cable compounds through the adhesion promoting and hydrophobising effect of Dynasylan® 6498.
- The EPDM and EVA polymers with Dynasylan® 6498 are for the halogen-free, non-toxic, environmentally-friendly flame retardant cable compounds (HFFR) based on ATH and MDH.
- In addition, Dynasylan® 6498 can be used in many other applications such as filler and pigment coating, dispersions etc.
- Typical property improvements obtained by using Dynasylan® 6498 in filled polymers are:
- improved filler dispersion.
- good processability.
- significantly reduced water-uptake excellent balance between tensile strength and elongation at break at a high level.
- improved chemical resistance.
- strongly reduced tendency to stress cracking.
- higher impact strength.
- higher abrasion resistance.
Properties
- Physical Form
- Appearance
- Colorless. low - viscous liquid
- Odor
- Nearly odorless
- Mechanical Properties
Value Units Test Method / Conditions M.Scorch t5 min. 16.91 - - ML (1+4) (at 100°C) 111.0 ME - Hardness (Shore A) 65.0 SH - Tear Resistance 36.0 N/mm - DIN Abrasion 84.0 mm³ - Comp. Set (for 22 h at 70°C) 21.5 % - Comp. Set (for 22 h at 100°C) 24.6 % - Tensile Strength 14.1 mPa - Modulus (100%) 1.6 mPa - Modulus (200%) 2.7 mPa - Modulus (300%) 4.3 mPa - Elongation (at Break) 605.0 % - - Technical Data
Value Units Test Method / Conditions Density (at 20°C) approx. 1 g/cm³ DIN 51757 Boiling Point (at 1013 hPa) min. 242 °C ASTM D-1120 Dynamic Viscosity (at 20°C) 3 - 7 mPa.s DIN 53015 Flash Point min. 75 °C DIN EN ISO 2719 (Pensky-Martens, closed-cup) Silica Content (as SiO₂) approx. 45 % w/w AN-SAA 0754 Residual Moisture 0.16 % - Evolved VOC (Methanol) 480.0 g/kg -
Regulatory & Compliance
- Chemical Inventories
Technical Details & Test Data
- Electrical Properties
Electrical properties improve significantly with Dynasylan® 6598
Packaging & Availability
Storage & Handling
- Shelf Life
- 12 months