CoatOSil* T-Cure Silane Oligomer


CoatOSil* T-Cure Silane is a 100% active mercapto silane useful as a crosslinker and adhesion promoter for coating, adhesive and sealant applications. Its area of primary utility is in polyurethane based systems, but it may also find use in epoxy, acrylate and hybrid coatings.

CoatOSil T-Cure silane oligomer may be useful in the development of coating formulations where reactivity with a mercapto silane is desired. This patented oligomer is low in odor compared to standard mercapto silanes and can display a trio of reactive chemistries. In addition to thiol groups, silanol and diols are generated upon the hydrolysis of the silane.

CoatOSil* T-Cure Silane has the following key features and typical benefits:

Key Features and Typical Benefits

  • Less than 1%wt releasable ethanol
  • Low odor
  • Low viscosity
  • Behaves as reactive diluent within a coating formulation
  • Can be used in virtually all coating chemistries where mercapto groups can react, e.g.;
    • Isocyanates
    • Epoxies
    • Acrylates



coatosil t-cure
CoatOSil T-Cure Silane Oligomer MB

More About CoatOSil* T-Cure Silane Oligomer

Potential Applications

  • Coatings for industrial maintenance applications including storage tanks, bridges and exterior steel structures.
  • Coatings requiring curing at elevated temperatures (heat cured formulations), such as coatings for automotive, appliance or coil applications
  • Epoxy primers for metals and flooring
  • Room temperature cure coatings for applications such as aerospace and automotive re-finishing

CoatOSil T-Cure silane is a mercapto silane oligomer. CoatOSil T-Cure silane exhibits a unique structure, very low odor and an opportunity to make use of the difunctional (diol) leaving group in polyurethane cure chemistry. CoatOSil T-Cure silane offers improved hardness development, corrosion resistance and adhesion.

CoatOSil T-Cure silane, offers excellent adhesion improvement, especially on difficult to stick to soft metals like galvanized steel. While CoatOSil T-Cure silane can slow the cure and extend the potlife of tin catalyzed systems, tertiary amines like triethyl amine (TEA) can be used in lieu of tin, offering formulation options and the ability to tailor cure speed while maintaining good corrosion resistance.

This product has shown improvements in the adhesion of primer to substrate, and topcoat to primer. It can also help speed the hardness development of a 2k polyurethane system over a period of a few days to several weeks.

For key features, typical benefits and physical properties, potential applications, and more, please download the marketing bulletin on this page.

The attached technical paper features CoatOSil T-Cure and was first published in the European Coatings Journal, issue 3/2017.   

CoatOSil T-Cure has been featured in the attached technical paper published in  European Coatings Journal

* CoatOSil is a trademark of Momentive Performance Materials Inc. 

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*The marks followed by an asterisk (*) are trademarks of Momentive Performance Materials Inc.