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
- Reactivity
- Dynasylan® 6490 is excellent as an adhesion promoter, dispersion and hydrophobation agent in mineral filled compounds.
- In the presence of moisture, the methoxy groups of Dynasylan® 6490 hydrolyse to produce methanol and reactive silanol groups.
- These silanol groups react with the filler via silicon- oxygen bridges. The vinyl functional groups of Dynasylan® 6490 react with the polymer phase in the presence of radicals.
- The high boiling point of Dynasylan® 6490, 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 methanol (VOC) is significantly reduced compared to monomeric vinyl silanes.
Applications & Uses
- Applications
- Compatible Polymers & Resins
- Application Characteristics
- 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® 6490.
- The EPDM and EVA polymers with Dynasylan® 6490 are for the halogen-free, non-toxic, environmentally-friendly flame retardant cable compounds (HFFR) based on ATH and MDH.
- In addition, Dynasylan® 6490 can be used in many other applications such as filler and pigment coating, dispersions etc. typical property improvements obtained by using Dynasylan® 6490 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
- Technical Data
Value | Units | Test Method / Conditions | |
Density (at 20°C) | approx. 1 | g/cm³ | DIN 51757 |
Boiling Point (at 1013 hPa) | min. 220 | °C | ASTM D-1120 |
Dynamic Viscosity (at 20°C) | 2 - 4 | mPa.s | DIN 53015 |
Flash Point | approx. 87 | °C | DIN EN ISO 2719 (Pensky-Martens, closed-cup) |
Silica Content (as SiO₂) | approx. 54 | % w/w | AN-SAA 0754 |
Regulatory & Compliance
- Chemical Inventories
Packaging & Availability
- Packaging Type
- Packaging Information
- Dynasylan® 6490 is supplied in 25 kg, 200 kg drums and 1.000 kg containers.
- The containers must remain tightly sealed and stored in a cool, well-ventilated place protected against moisture.
Storage & Handling
- Shelf Life
- 12 months