Dynasylan® MEMO

Dynasylan® MEMO is a methacrylfunctional silane that can be used as adhesion promoter, surface modifier, co-monomer for polymer synthesis and crosslinker.
Dynasylan® MEMO is a clear, colorless liquid. It is soluble in alcohols, and aliphatic or aromatic hydrocarbons.

Typical Applications

Dynasylan® MEMO is used as adhesion promoter in applications such as:
  • a constituent of glass fiber sizes (glass fiber fillers for unsaturated polyester resins and polyolefins)
  • a finish for glass fabrics used in unsaturated polyester resins
  • as a surface modifier for pigments and fillers for thermosets (unsaturated polyester, MMA), thermoplastics (polyesters and polyolefins)and elastomers
  • as an additive for filled, peroxide-crosslinked elastomers
  • as an additive for casting resins (unsaturated polyester, MMA)

Dynasylan® MEMO is either applied to the inorganic substrate as a pretreatment by dipping, spraying, or coating or it may be added directly to the resin matrix (additive process). For pretreatment, the silane may be used
  • neat
  • dissolved in an organic solvent
  • dissolved in a mixture of organic solvent and water for partial hydrolysis
  • completely hydrolyzed in aqueous solution.

To prepare an aqueous pretreatment solution, approx. 1-5 wt.% Dynasylan® MEMO is dissolved in water that has been adjusted to pH 3-4 with acetic acid. The solution will turns clear when the silane has fully hydrolyzed. The clear solution of Dynasylan® MEMO hydrolysate must be used within 1-2 days, if it turns cloudy again it may no longer be used. In the additive process, Dynasylan® MEMO is mixed with the resin or polymer before or together with the filler. A prerequisite for this method is compatibility of the silane with the resin since the silane must not react prematurely with the resin.

Benefits at a glance

Dynasylan® MEMO acts as a molecular bridge to chemically bind the quartz into the resin. This molecular bridge cannot be mechanically destroyed resulting in a stable high-performance product. With no silane treatment, gaps exist between the filler surface and the surrounding polymer Matrix. These gaps are pre-determined fracture points in the filled polymer resulting in a low mechanical stability of the product.

Product Details

Further Information

Packaging:

Dynasylan® MEMO is supplied in 25 kg, 215 kg drums and 1.000 kg IBC bulk containers. Delivery in ISO container 24.000 liter is possible too.

Shelf life:

In the unopened container Dynasylan® MEMO has a shelf life of min. 12 months from delivery.

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