VPS 2990 is an aqueous oligomeric methacrylamidoalkyl-functional silane hydrolysate. It is a yellow to reddish-brownish aqueous solution with an amine-like odour, miscible with alcohols or water.
VPS 2990 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
VPS 2990 is a trifunctional organic compound in which the silanol groups can be bonded to an inorganic substrate and the organophilic aminoalkyl- and vinyl-functional group can interact with a suitable polymer or resin.
Examples of suitable inorganic substrates are:
Examples of suitable polymers or resins are:
VPS 2990 finds application in many industries. Advantages arise in water-based systems.
Examples are:
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.
VPS 2990 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 reactive silanol (Si-OH) groups of VPS 2990 can bond to a variety of inorganic substrates. The methacryl-amido groups interacts with the polymer. Examples of suitable inorganic substrates are glass, glass fibers, glass wool, mineral wool, silicic acid, quartz, sand, cristobalite, wollastonite and mica; also suitable are aluminium hydroxide, kaolin, talc, other silicate fillers, metal oxides and metals.
Examples of suitable polymers include unsaturated polyester, acrylates and vinyl esters.
Examples of suitable polymers include unsaturated polyester, acrylates and vinyl esters.
Product Details & Documents
Technical Data Sheets
Further Information
Storage:
It is recommended to store VPS 2990 above 4°C.
VPS 2990 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.
VPS 2990 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:
VPS 2990 is supplied in 25 kg PE cans and 200 kg drums.
Shelf life:
VPS 2990 has a shelf life of at least 12 months from delivery in an originally sealed can, drum or IBC.