Dynasylan® 6498

Dynasylan® 6498 is a vinyl silane concentrate (oligomeric siloxane) containing vinyl and ethoxy groups. Dynasylan® 6498 is a colorless, nearly odorless low ­viscosity liquid. Dynasylan® 6498 is an excellent compatibiliser between inorganic fillers (e.g. kaolin, MDH, ATH) and organic polymers (e.g. EPDM, EVA, PE).

Principal: Evonik Corporation Silanes

Functions: Adhesion Promoter, Adhesion Promoter, Compatibilizer, Crosslinking Agent

Chemical Family: Organosilane

End Uses: Cables, Metallic Pigment Coating

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

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

Labeling Claims: Halogen-free, Low VOC, Non-Toxic, Not Listed In California Proposition 65

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Enhanced TDS

Identification & Functionality

Blend
No
CASE Ingredients Functions
Chemical Family
Function
Surface Modifier, Crosslinking Agent, Adhesion Promoter, Coupling Agent, Filler, Compatibilizer
Industrial Additives Functions
Plastics & Elastomers Functions
Product Code
MITM04153
Single Ingredient
Yes
Technologies
Product Families

Features & Benefits

CASE Ingredients Features
Labeling Claims
Materials Features
Product Benefits
  • Improved filler dispersion
  • Good processability
  • Significantly reduced water­uptake 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

Properties

Physical Form
Product Properties
  • 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 silicon­oxygen bridges.
  • The vinyl functional groups of Dynasylan® 6498 react with the polymer phase in the presence of radicals: A major field of application for mineral­filled 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.

Regulatory & Compliance

Packaging & Availability

Packaging Type
Product Packaging

Dynasylan® 6498 is supplied in 25 kg and in 200 kg drums and 1.000 kg bulk containers.

Storage & Handling

Storage and Handling Conditions
  • The containers must remain tightly sealed and stored in a cool, well­ventilated place protected against moisture.
  • In the unopened container the shelf life of Dynasylan® 6498 is 12 months.

Other

Appearance
colorless liquid
Boiling Point
min. 242.0 °C
Boiling Point (SDS)
238.0-242.0 °C
Color (SDS)
Colorless to yellowish
Density
1.0 g/cm³
Density (SDS)
1.0 g/cm³
Flash Point
min. 75.0 °C
Flash Point
min. 75.0 °C
Flash Point (SDS)
min. 167.0 °F
Immiscible In (SDS)
Water
Item Number
Odor
Nearly odorless
Odor (SDS)
Characteristic
Other Hazards
Hazard(s) not otherwise classified (HNOC): None.
Principal
Shelf Life
12.0 mo
Silicon Content
45.0 %(W/W)
USA/DOT Emergency Response Guide Number
128
USA/DOT Proper Shipping Name
Combustible liquid, N.O.S. (polysiloxane, containing vinyl and ethoxy groups)
USA/DOT UN Number
NA 1993
Viscosity
3.0-7.0 cSt
Viscosity (SDS)
3.0-7.0 mPa.s
Shelf Life & Stability
ValueUnitsTest Method / Conditions
Shelf Life12.0 momo
Physical Properties
ValueUnitsTest Method / Conditions
Boiling Pointmin. 242.0 °C°CASTM D1120
Density1.0 g/cm³g/cm³DIN 51757
Flash Pointmin. 75.0 °C°CPensky-Martens Closed Cup (PMCC)
Flash Pointmin. 75.0 °C°CDIN EN ISO 2719
Viscosity3.0-7.0 cStcStDIN 53015 At 20°C
Material Composition
ValueUnitsTest Method / Conditions
Silicon Content45.0 %(W/W)%(W/W)Internal Method as silicon dioxide
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Boiling Point (SDS)238.0-242.0 °C°C
Density (SDS)1.0 g/cm³g/cm³at 20°C
Flash Point (SDS)min. 167.0 °F°F
Viscosity (SDS)3.0-7.0 mPa.smPa.sAt 20°C