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)

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

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Enhanced TDS

Identification & Functionality

Blend
No
CASE Ingredients Functions
Adhesion Promoter
Chemical Family
Organosilane
Function
Surface Modifier, Crosslinking Agent, Adhesion Promoter, Coupling Agent, Filler, Compatibilizer
Industrial Additives Functions
Crosslinking Agent
Plastics & Elastomers Functions
Adhesion Promoter,
Compatibilizer
Product Code
MITM04153
Single Ingredient
Yes
Technologies
CASE,
Plastics,
Elastomers,
Industrial Additives & Materials
Product Families
CASE — Additives
Functional Additives
Plastics — Polymer Additives
Performance Additives,
Surface Modifiers
Elastomers — Elastomer Additives
Performance Additives,
Surface Modifiers
Industrial Additives & Materials — Processing Aids
Other Processing Additives

Features & Benefits

CASE Ingredients Features
Abrasion Resistance,
Chemical Resistance,
High Flash Point,
High Impact Strength,
High Performance,
Low VOC,
Low Viscosity
Labeling Claims
Conflict Minerals-free,
Halogen-free,
Low VOC,
Non-Toxic
Materials Features
Abrasion Resistant,
Chemical Resistant,
Excellent Hydrophobic Properties,
Good Environmental Stress Crack Resistance (ESCR),
Good Impact Strength,
Good Processability,
High Boiling Point,
High Flash Point,
High Performance,
Improves Filler Dispersion,
Low VOC,
Low Viscosity,
Reduces Moisture Uptake
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

Coating End Applications
Metallic Pigment Coating
Compatible Polymers & Resins
Ethylene Propylene Diene Monomer (EPDM),
Ethylene Vinyl Acetate (EVA),
High-Density Polyethylene (HDPE),
Polyethylenes (PE)
Plastics & Elastomers End Uses
Cables
Markets
Electrical & Electronics,
Paints & Coatings
Applications
Electrical & Electronics — Wire & Cable
Jacketing & Insulation
Paints & Coatings — Industrial Coatings
Industrial Coatings

Properties

Physical Form
Liquid
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.

Packaging & Availability

Packaging Type
Drums,
Pails

Principal Information

Group Principal Number
S000006
Principal
Evonik Corporation Silanes

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
Color (SDS)
Colorless to yellowish
Immiscible In (SDS)
Water
Item Number
ITM09075,
ITM09162
Odor
Nearly odorless
Odor (SDS)
Characteristic
Other Hazards
Hazard(s) not otherwise classified (HNOC): None
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
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 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