Andisil® OH 40

Andisil® OH 40 by AB Specialty Silicones is useful in the treatment of fillers and as an anti-structuring additive in high consistency silicone rubber and silicone room temperature vulcanizing (RTV) formulations. It can be used as a reactive diluent for high viscosity polymers to adjust the overall viscosity of the formulation. It is a silanol functional fluid. It has excellent stability and can be used with catalytic amounts of ammonium carbonate to treat reinforcing fillers in-situ. The curing can be achieved by all usual condensation crosslinkers (i.e. alkoxy-, oxime- and acetoxy silanes) in conjunction with catalysts—the use of dibutyltin dilaurate or stannous octoate have been found effective as catalysts for this reaction. Andisil® OH 40 is pure and does not contain any plasticizers or additives. It has a shelf life of 12 months.