Dynasylan® MTMO

• In the presence of water, the methoxy groups of Dynasylan® MTMO hydrolyze and form reactive silanol groups which can bond to a variety of inorganic substrates.
• The organophilic mercapto end of Dynasylan® MTMO can react with a suitable polymer.
• Hydrolysis of Dynasylan® MTMO is catalyzed by acids.
• Examples of suitable inorganic substrates are glass, glass fibers, silicia, quartz, sand, cristobalite, mica kaolin, talc, other silicate fillers and metals.
• Dynasylan® MTMO may be used with such polymers as polyurethanes, polysulfides, sulfur-cured and metal oxide-cured elastomers.
• Product modifications are possible by using Dynasylan® MTMO in addition or grafting reactions with suitable monomers or polymers (e.g. isocyanates, PVC etc.). An Si-O-Si crosslinking can take place via the silicon functional groups of the silane.

Dynasylan® MTMO is used in applications such as:

• glass composites: as a finish or a size ingredient
• glass and metal primer
• sealants and adhesives: as a primer, additive, or for chemical modification of the polymer
• mineral filled polymers: for pretreatment of fillers and pigments or as an additive
• crosslinking of polymers

Important product effects that can be achieved through the use of Dynasylan® MTMO include:

• Compression set
• Improved mechanical properties, e.g. flexural strength, tensile strength, impact strength and modulus of elasticity, tear strength
• Improved moisture and corrosion resistance
• Improved electrical properties, e.g. dielectric constant, volume resistivity
• Increased thermal resistivity

Dynasylan® MTMO can also improve such processing properties as:

• cure time
• adhesion
• filler dispersion
• rheological behavior: (e.g. viscosity reduction)
• higher filler loading

• Dynasylan® MTMO can be used as a primer (i.e. a ca. 0.5-10 wt.%. solution in an organic solvent such as alcohol), as an ingredient in a solution, or neat.
• A chemical modification can be achieved by reaction of Dynasylan® MTMO with suitable functional monomers or polymers.

Dynasylan® MTMO is supplied in 25 kg and 200 kg drums and 1.000 kg containers.