Dynasylan® 9896

Dynasylan® 9896 is an oligomeric short-chain alkylfunctional silane.
Dynasylan® 9896 is a clear, colourless to slightly yellow liquid and soluble in common organic solvents (e.g. petroleum ether, toluene, alcohol). Because of its low volatility and viscosity Dynasylan® 9896 is an easy-to-handle additive.
During the hydrolysis reaction between water and Dynasylan® 9896 a certain amount of VOC (volatile organic compound) is released as ethanol. From an environmental standpoint it should be noted that the amount of released hydrolysis ethanol (VOC) is significantly reduced compared to monomeric alkyl silanes and is below 100 g/l.
The high boiling point of Dynasylan® 9896, together with its high flash point, gives outstanding advantages with respect to safety and handling during processing.

Typical Applications

Dynasylan® 9896 silane can be used as a surface modifier to generate hydrophobicity (e.g. on inorganic pigments, mineral fillers). The short-chain alkyl functionality results in unique compound properties when Dynasylan® 9896 treated minerals or pigments are incorporated into polymers, e.g. polyethylene or polypropylene. Loading levels of 0.5 to 1.5 weight-% Dynasylan® 9896 based on the weight of filler or pigment are typically recommended. Dynasylan® 9896 is excellent as a dispersion and hydrophobation agent in mineral filled compounds. Dynasylan® 9896 forms covalent bonds to the inorganic and will not deplead in the final compound as it will happen to silicone oils used as surface modifiers. So Dynasylan® 9896 enables the printablility of mineral filled plastics. In the presence of moisture, a low pH is created, the ethoxy groups of Dynasylan® 9896 hydrolyse to produce ethanol and reactive silanol groups. These silanol groups react with the filler via silicon-oxygen bridges. Dynasylan® 9896 can be used in many other applications such as filler and pigment coatings, dispersions etc. Typical property improvements obtained by using Dynasylan® 9896 in filled polymers are:
  • improved filler dispersion
  • good processability
  • significantly reduced water-uptake

Benefits at a glance

Because of its unique structure, Dynasylan® 9896 exhibits superior hydrophobicity on substrates and forms chemical bonds to substrates. Use of Dynasylan® 9896 silane results in:
- Particularly in non-polar media (e.g. polyolefins etc.). Dynasylan® 9896 treated inorganic substrates (e.g. titanium dioxide, ATH, or MDH) dispersion show excellent compatibility.
- Dynasylan® 9896 as all silanes forms covalent bonds and will not deplead in the final compound.
- Higher filler loadings are possible. Better compatibiity results in lower viscosity compared to unmodified compounds.

Product Details

Further Information

Storage:

The containers must remain tightly sealed and stored in a cool, well-ventilated place protected against moisture.

Packaging:

Dynasylan® 9896 is supplied in 25 kg pails, 200 kg polyethylene inlined steel drums and 950 kg non-returnable IBC totes (net weight).

Shelf life:

In the unopened container Dynasylan® 9896 has a shelf life of min. 12 months from delivery.