Knowde Enhanced TDS
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
- Applications
- Compatible Polymers & Resins
- 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
- Technical Data
| 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 | % | — |
| 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
- Packaging Information
- Dynasylan® 6498 is supplied in 25 kg containers, 200 kg drums and 1.000 kg bulk containers.
Storage & Handling
- Shelf Life
- 12 months