Dynasylan® HYDROSIL 2926

Dynasylan® HYDROSIL 2926 is an aqueous oligomeric diol-functional silane hydrolysate, which acts as an adhesion promoter between inorganic materials (for example glass, metals and fillers) and organic polymers (thermosets, thermoplastics and elastomers).
Dynasylan® HYDROSIL 2926 is a colorless to slightly yellowish aqueous solution, miscible with alcohols or water.
Dynasylan® HYDROSIL 2926 is a bifunctional organic compound in which the functional silanol groups can be bonded to an inorganic substrate; the organophilic diol-functional group can interact with a suitable polymer. The particular advantage of Dynasylan® HYDROSIL 2926 compared with the corresponding epoxyfunctional alkoxysilanes is its nonflammability, the fact that no volatile organic constituents are released and the fact that no particular equipment safety precautions are necessary. Dynasylan® HYDROSIL 2926 can be diluted with water in all proportions. The hydrolysates are long-term stable.
Examples of suitable inorganic substrates are glass, glass fibres, glass wool, mineral wool, silicic acid, quartz, sand, cristobalite, wollastonite and mica; also suitable are aluminium trihydroxide, kaolin, talc, other silicate fillers, metal oxides and metals. Examples of particularly suitable polymers are epoxy resins, polyurethanes, phenolic resins, furane resins, melamine resins, PA, PBT, PC, EVA, PP, PVAC, acrylates and silicone.

Typical Applications

Dynasylan® HYDROSIL 2926 is a bifunctional organic compound in which the silanol groups can be bonded to an inorganic substrate and the organophilic diol-functional 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 2926 finds application in the products of 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 advantage of Dynasylan® HYDROSIL 2926 compared with the corresponding monomeric epoxyfunctional alkoxysilanes are:
  • Alcohol content of ≤ 1% garantees nonflammability, safe handling and minimal volatile organic constituents emisssion.
  • No hydrolysis chemistry is needed as Dynasylan® HYDROSIL 2926 is a ready-to-use aqueous silane hydrolysate.
  • Easily diluted with water to adjust to target concentration.
  • Applicable in a broad pH range.

Important product effects that can be achieved by using Dynasylan® HYDROSIL 2926 are:
  • 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 2926 helps as well to improve processing properties such as:
  • Nonflammability making almost no particular equipment safety precautions necessary.
  • Better filler dispersion leading to increased filler content during compounding.

Product Details

Further Information

Storage:

It is recommended to store Dynasylan® HYDROSIL 2926 above 4 °C.
However, singular freezing does not influence the product quality. Frozen product is re-useable after complete thawing and homogenization. Just stirring is sufficient for homogenization.
Dynasylan® HYDROSIL 2926 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 2926 is supplied in 25 kg PE can, 200 kg drum and 1.000 kg IBC.

Shelf life:

Dynasylan® HYDROSIL 2926 has a shelf life of minimum 12 months from delivery in an originally sealed can, drum or IBC.

Markets & Applications