SiSiB® PC2521 is a bifunctional organosilane having a reactive organic ureido group and a hydrolyzable inorganic triethoxysilyl group.
The dual nature of its reactivity allows SiSiB® PC2521 to bind chemically to both inorganic materials (e.g. glass, metals, fillers) and organic polymers (e.g. thermosets, thermoplastics, elastomers), functioning as an adhesion promoter and as a silane surface modifier. SiSiB® PC2521 is a 50% solution of silane in methanol; it is a colorless liquid with an alcohol-like odor and is soluble in alcohols, ketones, esters or aromatic hydrocarbons. SiSiB® PC2521 gamma Ureidopropyltriethoxysilane (50% in Methanol) is the equivalent of Momentive's A-1160, Dow's Z-6676, Evonik's Dynasylan 2201, ShinEtsu's KBE-585 silane.
116912-64-2 or 23779-32-0
No data °C [760mmHg]
Color and Appearance
Colorless transparent liquid
50% in Methanol
We also can supply pure gamma-Ureidopropyltriethoxysilane (CAS 23779-32-0) without methanol solvent.
SiSiB® PC2521 can be used with such polymers as epoxy, phenolic, furan and melamine resins, polyurethanes, PA, PBT, PE, EVA, PP, PVB, PVAC, acrylics and silicones.
SiSiB® PC2521 can be used as a size constituent of finish for glass fiber/glass silicone fabric composites.
SiSiB® PC2521 can be used as an additive to phenolic, furan and melamine resins for foundry resins and abrasives.
SiSiB® PC2521 can be used as an additive for sealants and adhesives.
SiSiB® PC2521 can be used as an silicone additive and/or primer for paints and varnishes to improve adhesion to the substrate.
The most important effects which can be achieved using PC2521 are improvements in product properties, such as:
Improved mechanical properties: e.g. flexural strength, tensile strength, impact strength, modulus of elasticity.
Improved resistance to moisture and corrosion.
Higher temperature of deflection under load.
SiSiB® PC2521 is supplied in 180Kg steel drum.
In the unopened original container SiSiB® PC2521 has a shelf life of one year in a dry and cool place.