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Dynasylan® VPS SIVO 280

Chemical Family
Siloxanes

Evonik VPS SIVO 280 is a groundbreaking multifunctional siloxane adhesion promoter with aminofunctionalities, finds applications across various industries. Primarily for use in adhesives & sealants, it enhances adhesion for hybrid products (e.g., silylated polyurethanes, MS Polymers®) and RTV-silicones, particularly on challenging polymethylmethacrylate (PMMA) substrates. VPS SIVO 280 also contributes to suitable adhesive cure, while imparting added flexibility and hydrophobicity.

Identification

Product families

Applications

Adhesives & Sealants — Building & Construction
  • Sealants & Caulks
Paints & Coatings — Industrial Coatings
  • Industrial Coatings

Product Families

CASE Ingredients — Additives
  • Functional Additives
  • Surface Modifiers

Other characteristics

Brand
Dynasylan
Features

Controls VOC, Good Mechanical Properties, Good Moisture Resistance, Improved Flexibility, Improved Substrate Wetting, Water Resistance

Functions

Adhesion Promoter, Coupling Agent, Surface Modifier

Labeling Claims
Low VOC
Compatible Polymers & Resins

Butyl Rubber (IIR), Poly(Methyl Methacrylate) (PMMA), Polyurethanes (PU), Silicones

Markets
  • Adhesives & Sealants
  • Paints & Coatings
Shelf LIfe
9 months
Technology
CASE Ingredients
Packaging Type
  • Drums
  • Pails
  • Totes (IBC)
Packaging Information

VPS SIVO 280 is available in 25 kg pails, 200 kg drums and 1.000 kg IBC's.

Applications

VPS SIVO 280 is a versatile product that provides improved product performance and quality.; VPS SIVO 280 is soluble in alcohols, aliphatic and aromatic hydrocarbons, but it can undergo reactions with ketones or ester solvents.; VPS SIVO 280 is considered primarily as an additive in moisture curable adhesives & sealants to eliminate the need for special primers in numerous bonding applications.; Loading levels of 0,5 to 2,0 wt. % of VPS SIVO 280 as an additive - calculated on the overall formulation - are typically recommended.; VPS SIVO 280 has been developed mainly for use in: MS Polymer® Silane modified polyurethane/ polyether RTV-1/RTV-2 silicones Butyl rubber; MS Polymer®; Silane modified polyurethane/ polyether; RTV-1/RTV-2 silicones; Butyl rubber; The compatibility of other ingredients with VPS SIVO 280 should be tested in advance.; Key Benefits VPS SIVO 280 exhibits excellent wetting on substrates and it can form weather- and moisture-resistant bonds to substrates which are partially difficult to adhere.; The main benefits of VPS SIVO 280 in silylated polyurethane or MS polymer based adhesives & sealants are: Improved adhesion to plastics, especially to polymethylmethacrylate (PMMA) Improved adhesion to aluminum Well-Balanced mechanical properties Significant VOC-reduction compared to conventional amino silanes; Improved adhesion to plastics, especially to polymethylmethacrylate (PMMA); Improved adhesion to aluminum; Well-Balanced mechanical properties; Significant VOC-reduction compared to conventional amino silanes

Compatible Polymers and Resins
  • Butyl Rubber (IIR)
  • Poly(Methyl Methacrylate) (PMMA)
  • Polyurethanes (PU)
  • Silicones
Compatible Substrates and Surfaces
  • Aluminum
  • Metal
  • Plastics

Technical data

Table 1 of 1

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CharacteristicValueUnitMethod
Density (at 20°C)approx. 1.15g/cm³DIN 51757
Viscosity (at 20°C)max. 3mPa.sDIN 53015
Flash Pointmin. 95°CDIN EN 22719

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