VPS 2978

aqueous oligomeric aminoalkyl- and vinylbenzylamino-functional silane hydrolysate with multifunctional properties

Typical Applications

VPS 2978 is a mulitfunctional organic compound in which the silanol groups can be bonded to an inorganic substrate and the organophilic amino groups can interact with a suitable polymer or resin.
Examples of suitable inorganic substrates are:
  • glass, glass fibers, glass beads and glass wool
  • mineral wool
  • metals
  • and various fillers like quartz, wollastonite or ATH

Examples of suitable polymers or resins are:
  • Thermosets like epoxy, phenolic, furanic and melaminic resins
  • Thermoplastics like PA, PBT, EVA, PPS, MAPE, MAPP, PVB, acrylates
  • Elastomers like silicones

VPS 2978 finds application in many industries. Advantages arise in water-based systems.
Examples are:
  • as a size constituent of glass fiber/glass fabric composites or mineral wool insulating materials
  • as a primer or additive for sealants and adhesives
  • as a pretreatment or an additive to mineral-filled thermoplastic compounds
  • as a glass and metal primer
  • as a primer and/or additive for paints and varnishes to improve adhesion to the substrat

Benefits at a glance

VPS 2978 is an aqueous oligomeric multifunctional product, that contains
  • reactive secondary amino groups
  • reactive styrenic double bonds
  • antistatic cationic centers
  • and reactive silanol groups.

Important product effects that can be achieved through the use of VPS 2978 are:
  • Improved mechanical properties: e.g. flexural strength, tensile strength, impact toughness, modulus of elasticity
  • improved electrical properties: e.g. dielectric constant, specific volume resistance
  • improved temperature stability at the inorganic/organic interphase (>300°C)

Important processing effects that can be achieved through the use of VPS 2978 are:
  • better polymer wetting
  • elongated gelation time of resins
  • immediate solubility in water

Advantages that can be realized compared to conventional organoalkoxy functional silanes:
Improved workplace safety
  • flash point of product is >=95°C
  • only < 1 wt.-% alcohols are liberated during processing by VPS 2978

Less complex processing parameters
  • process conditions are not bound to ignition limits of the liberated alcohols
  • more reliable process due to prevented steps of hydrolysis and condensation of the alkoxysilanes
  • better space-time yield due to a ready to use aqueous, oligomeric product
  • no additional removal or separation of the released alcohol needed

Easy application and formulation
  • product can be directly mixed in water based polymer, filler or binder systems

Product Details

Technical Data Sheets

Further Information

Storage:

It is recommended to store VPS 2978 above 4°C.
VPS 2978 has a flash point > =95°C and can be stored and transported advantageously according to different local requirements, compared to flammable liquids (Category 2, 3 and 4), as the most established monomeric alkoxysilane materials are.

Packaging:

VPS 2978 is supplied in 25 kg PE cans and 200 kg drums.

Shelf life:

VPS 2978 has a shelf life of at least 12 months from delivery in an originally sealed can or drum.