Dynasylan® 6490

Dynasylan® 6490 is a vinyl silane concentrate (oligomeric siloxane) containing vinyl and methoxy groups. Dynasylan® 6490 is a colorless, nearly odorless low-viscosity liquid.

Principal: Evonik Corporation Silanes

Functions: Adhesion Promoter, Compatibilizer, Coupling Agent, Crosslinking Agent, Moisture Scavenger, Surface Modifier, Water Scavenger

Chemical Family: Organosilane

End Uses: Alkyd Coating, Cables, Metallic Pigment Coating

Compatible Polymers & Resins: Alkyds, Ethylene Propylene Diene Monomer (EPDM), Ethylene Vinyl Acetate (EVA), High-Density Polyethylene (HDPE), Polyethylenes (PE)

Labeling Claims: Conflict Minerals-free, Halogen-free, Low VOC, Non-Toxic

Features: Abrasion Resistance, Chemical Resistance, High Flash Point, High Impact Strength, High Performance, Low VOC, Low Viscosity

Enhanced TDS

Identification & Functionality

Features & Benefits

CASE Ingredients Features
Labeling Claims
Materials Features
Product Benefits
  • 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

Applications & Uses

Coating End Applications
Compatible Polymers & Resins
Plastics & Elastomers End Uses
Markets
Applications
Product Applications
  • 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.

Properties

Physical Form
Product 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.

Packaging & Availability

Packaging Type

Principal Information

Group Principal Number
S000006
Principal

Storage & Handling

Storage and Handling Conditions
  • The containers must remain tightly sealed and stored in a cool, well-ventilated place protected against moisture.
  • In the unopened container Dynasylan® 6490 has a shelf life of min. 12 months from delivery.

Other

Appearance
colorless liquid
Color (SDS)
Colorless
Immiscible In (SDS)
Water
Item Number
Odor
Odorless
Odor (SDS)
Aromatic
Other Hazards
None known
Temperature Control
No
USA/DOT Proper Shipping Name
Not Available
USA/DOT UN Number
UN1993
Material Composition
ValueUnitsTest Method / Conditions
Silicon Content54.0 %(W/W)%(W/W)Internal Method Silicon Dioxide
Physical Properties
ValueUnitsTest Method / Conditions
Boiling Pointmin. 220.0 °C°CASTM D1120
Density1.0 g/cm³g/cm³DIN 51757 at 20°C
Flash Point87.0 °C°CPensky-Martens Closed Cup (PMCC)
Flash Point87.0 °C°CDIN EN ISO 2719
Viscosity2.0-4.0 cStcStDIN 53015 at 20°C
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Boiling Point (SDS)220.0 °C°CASTM D1120
Density (SDS)1.0 g/cm³g/cm³DIN 51757 at 20°C
Flash Point (SDS)min. 87.0 °C°CEN ISO 2719
Flash Point (SDS)min. 87.0 °C°CPensky-Martens Closed Cup (PMCC)
Melting Point (SDS)max. -70.0 °C°C
Vapor Pressure (SDS)2.0 hPahPaat 20°C
Viscosity (SDS)2.0-4.0 mPa.smPa.sDIN 53015 at 20°C
Shelf Life & Stability
ValueUnitsTest Method / Conditions
Shelf Life12.0 momo