Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Evonik Dynasylan SIVO 121 Multifunctional nearly VOC-free water-borne silane system

Evonik Dynasylan SIVO 121 is a multifunctional, nearly VOC-free, water-borne silane system offering superior adhesion promotion, corrosion inhibition, and substrate compatibility for coatings, sealants, and construction materials without compromising environmental performance or application efficiency.
  • evonik dynasylan sivo 121 multifunctional nearly voc free water borne silane sys_18d5a64b
  • evonik dynasylan sivo 121 multifunctional nearly voc free water borne silane sys_18d5a64b

Features Of Evonik Dynasylan SIVO 121 Multifunctional nearly VOC-free water-borne silane system

  1. Nearly VOC-free formulation compliant with stringent global environmental regulations including EU REACH and US EPA guidelines.

  2. Water-based, non-flammable system enabling safer handling, storage, and transportation versus solvent-based alternatives.

  3. Multi-functional silane chemistry providing simultaneous adhesion promotion, corrosion inhibition, and substrate hydrophobization.

  4. Excellent compatibility with waterborne acrylics, polyurethanes, and epoxy dispersions for seamless integration into existing coating formulations.

  5. Rapid hydrolysis and condensation kinetics ensure efficient crosslinking and short curing times under ambient or mild thermal conditions.

Typical Applications Of Evonik Dynasylan SIVO 121 Multifunctional nearly VOC-free water-borne silane system

  1. Adhesion promoters in waterborne automotive OEM and refinish primers and clearcoats.

  2. Corrosion-inhibiting additives in eco-friendly metal pretreatment coatings for steel and aluminum substrates.

  3. Functional binders in high-performance architectural masonry and concrete sealers.

  4. Surface modifiers for mineral-filled composites and fiber-reinforced cementitious systems.

  5. Hybrid crosslinkers in sustainable wood coatings and interior wall paints requiring low-emission certification.

Specifications Of Evonik Dynasylan SIVO 121 Multifunctional nearly VOC-free water-borne silane system

Chemical TypeMulti-functional alkoxysilane (aminosilyl-alkyl-alkoxysilane hybrid)
Product FormLiquid concentrate
AppearanceClear, colorless to pale yellow liquid
VOC Content< 50 g/L (as per ASTM D6886)
pH (1% aqueous solution, 23 °C)4.0 – 5.5
Density (20 °C)1.01 – 1.03 g/cm³
SolubilityMiscible with water and common water-miscible co-solvents (e.g., ethanol, isopropanol, ethylene glycol monobutyl ether)
Shelf Life (unopened, 5–25 °C)12 months


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