Dynasylan® HYDROSIL 2999

Dynasylan® HYDROSIL 2999 is an aqueous oligomeric quaternary amino- and ammoniumalkyl-functional silane hydrolysate, which brings anti-static effects and enhanced conductivity to inorganic surfaces. It is a colorless to slightly yellowish aqueous solution with an amine-like odour, miscible with alcohols or water.
Dynasylan® HYDROSIL 2999 can be diluted with water in all proportions (stirring for at least 1 h at RT). During dilution, the oligomeric structure changes and the number of SiOH groups increases. The hydrolysates are long-term stable.

Typical Applications

Dynasylan® HYDROSIL 2999 is a multifunctional organic compound in which the silanol groups can be bonded to an inorganic substrate and the organophilic amino group 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
  • Elastomere like silicones

Dynasylan® HYDROSIL 2999 finds application in many industries. Advantages arise in water-based systems.
Examples are:
  • as a glass and metal primer
  • as a size constituent of glass fiber/glass fabric composites or mineral wool insulating materials
  • as an additive to foundry resins and abrasives
  • as a pretreatment or an additive to mineral-filled thermoplastic compounds
  • as an additive for adhesives and sealants to improve adhesion to the substrate
  • as an additive and/or primer for paints and varnishes to improve adhesion to the substrate

Benefits at a glance

The particular advantages of Dynasylan® HYDROSIL 2999 compared with the corresponding monomeric amino-, alkyl- or ammonium-functional alkoxysilanes are:
  • Alcohol content of ≤ 1% guarantees nonflammability, safe handling and minimal volatile organic constituents emisssion.
  • No hydrolysis chemistry is needed as Dynasylan® HYDROSIL 2999 is a ready-to-use aqueous silane hydrolysate.
  • Easily diluted with water to adjust to target concentration

Important product effects that can be achieved by using Dynasylan® HYDROSIL 2999 are:
  • Improved antistatic properties after glass fiber treatment with Dynasylan® HYDROSIL 2999.
  • Improved mechanical properties, e.g. flexural strength, tensile strength, impact strength, modulus of elasticity.
  • Improved resistance to moisture and corrosion.
  • Improved adhesion by excellent surface wetting of inorganic substrates and optimal reaction with organic polymers.

Dynasylan® HYDROSIL 2999 helps as well to improve processing properties such as:
  • Nonflammability making almost no particular equipment safety precautions necessary.
  • Highly effective dispersing additive for inorganic particles in water. Better filler dispersion leading to increased filler content during compounding.

Product Details

Technical Data Sheets

Further Information

Storage:

It is recommended to store Dynasylan® HYDROSIL 2999 above 4°C.
Dynasylan® HYDROSIL 2999 has a flash point >= 95°C and can be stored and transported accordingly with different local requirements, compared to flammable liquids (Category 2, 3 and 4), as the most established monomeric alkoxysilane materials are.

Packaging:

Dynasylan® HYDROSIL 2999 is supplied in 25 kg PE cans, 200 kg drums and 1.000 kg IBC.

Shelf life:

Dynasylan® HYDROSIL 2999 has a shelf life of minimum 12 months from delivery in an originally sealed cans, drum or IBC.