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Dynasylan® 6598

Chemical Family
Silanes

Dynasylan® 6598 is an oligomeric siloxane featuring vinyl, propyl, and ethoxy groups. Developed from Dynasylan® VTMOEO, this colorless and nearly odorless liquid brings enhanced properties. Acting as an excellent silane compatibilizer, it bridges inorganic fillers like kaolin, MDH, and ATH with organic polymers such as EPDM, EVA, and PE. In mineral-filled and peroxide-crosslinked cable systems, Dynasylan® 6598 improves mechanical and electrical attributes, especially in moist conditions. With its high boiling start and flash point, it ensures safety, handling ease, and processing advantages. Furthermore, this product emits significantly less hydrolysis ethanol (VOC) compared to monomeric silanes, addressing environmental considerations.

Properties

Physical Form
Liquid

Other characteristics

Brand
Dynasylan
Functions

Adhesion Promoter, Compatibilizer, Coupling Agent, Crosslinking Agent, Moisture Scavenger, Surface Modifier

Labeling Claims
Low VOC
Compatible Polymers & Resins

Ethylene Propylene Diene Monomer (EPDM), Ethylene Vinyl Acetate (EVA), High-Density Polyethylene (HDPE), Polyethylenes (PE)

Odor
Nearly odorless
Markets
  • Adhesives & Sealants
  • Building & Construction
  • Electrical & Electronics
  • Paints & Coatings
Appearance
Colorless. low - viscous liquid
Reactivity

Dynasylan® 6598 is a colorless, nearly odorless low-viscosity liquid.; Dynasylan® 6598 is an excellent silane compatibiliser between inorganic fillers (e.g. kaolin, MDH, ATH) and organic polymers (EPDM, EVA, PE).; The application of Dynasylan® 6598 in mineral-filled and peroxide-crosslinked cable systems results in improved mechanical and electrical properties, especially upon exposure to moisture.; The high boiling start of Dynasylan® 6598, together with its high flash point, gives it several advantages over monomeric silanes with respect to safety, handling and processing.; From an environmental viewpoint it should be noted that the amount of released hydrolysis ethanol (VOC) is considerably less than for monomeric silanes.

Shelf LIfe
12 months
Technology
  • CASE Ingredients
  • Elastomers
  • Plastics
Packaging Type
Totes (IBC)
Color
Transparent
Material Features

Abrasion Resistant; Chemical Resistant; Creep Resistant; Excellent Filling Properties; Excellent Hydrophobic Properties; Good Electrical Properties; Good Environmental Stress Crack Resistance (ESCR); Good Impact Strength; Good Mechanical Properties; Good Processability; High Boiling Point; High Flash Point; High Performance; Improves Filler Dispersion; Low VOC; Low Viscosity; Very Good Heat Resistance

Chemical Inventories
  • ECL (Korea)
  • EINECS (EU)
  • ELINCS (EU)
  • ENCS (Japan)
  • IECSC (China)
  • KECI (Korea)
  • PICCS (Phillipines)
  • TSCA (USA)

Technical data

Table 1 of 1

7 rows
CharacteristicValueUnitMethod
Density (at 20°C)approx. 1g/cm³DIN 51757
Boiling Point (at 1013 hPa)min. 255°CASTM D-1120
Viscosity (at 20°C)approx. 3 - 7mPa.sDIN 53015
Flash Pointmin. 70°CDIN EN ISO 2719 (Pensky-Martens, closed-cup)
Silica Content (as SiO₂)approx. 42% w/wAN-SAA 0754
Residual Moisture0.18%—
Evolved VOC (Methanol)465.0g/kg—

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