Dynasylan® SILBOND® Pure

Dynasylan® SILBOND® Pure is a clear, low-viscosity liquid that is essentially pure tetraethyl orthosilicate monomer (99.0%). Dynasylan® SILBOND® Pure is used as a building block for zeolites and catalyst carriers, crosslinking agent, chemical intermediate, clear-coat component, and in any other application requiring pure TEOS monomer.

Typical Applications

Dynasylan® SILBOND® Pure can replace Dynasylan® SILBOND® Condensed in every application, where higher purity is needed. Dynasylan® SILBOND® Pure is a ready source of silicic acid for many applications. Silicic acid is usually obtained by hydrolysis, or thermally by condensation at elevated temperatures.
The resulting silicic acid bonds well to many inorganic substrates and can be deposited in-situ in a controlled manner. The surfaces of glass, metals, pigments, fillers, and synthetic fibers can be coated withy a very thin SiO₂ layer in order to improve chemical and thermal stability, and mechanical properties.
Other applications are:
  • building blocks for zeolites and catalyst carriers
  • raw material for optically clear coatings
  • binders for fillers in inorganic zinc-rich paints or precision investment castings
  • crosslinkers in silicone rubber systems
  • drying agents in sealant compositions

Dynasylan® SILBOND® Pure is an important starting material for sol-gel processes, where the additional use of alkylalokoxysilanes (e.g. Dynasylan® MTES) can give the siloxane network a slight organic character as a result of the incorporation of alkyl groups.
It is also possible to construct an inorganic/organic network by adding silanes containing organofunctional groups (e.g. aminopropyl groups) and polymerizing with organic precursors. This principle makes it possible to obtain highly scratch- and abrasion-resistant coatings.
Dynasylan® SILBOND® Pure is immiscible with water, so hydrolysis requires the use of a co-solvent such as ethanol. Suitable catalysts are mineral acids or ammonia, or even acetic acid and amines.
Partial hydrolysis gives hydrolysates of Dynasylan® SILBOND® Pure whose shelf-life depends on the amount of water and solvent used. The amount of water determines the activity of the hydrolysate. Activity and shelf-life are inversely proportional. The correct choice for the amount of water can give hydrolysates, which have a shelf life of up to a year (from the time of manufacture).

Benefits at a glance

Dynasylan® SILBOND® Pure is a clear, low-viscosity liquid that is essentially pure tetraethyl orthosilicate monomer (99.0%). Dynasylan® SILBOND® Pure is used as a building block for zeolites and catalyst carriers, crosslinking agent, chemical intermediate, clear-coat component, and in any other application requiring pure TEOS monomer.

Product Details

Technical Data Sheets

Further Information

Packaging:

Dynasylan® SILBOND® Pure could be available in pails, drums, totes and tanker quantities.
Please ask for further details.

Shelf life:

In the unopened container Dynasylan® SILBOND® Pure has a shelf life of min. 24 months from date of manufacture.