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N-(beta-aminoethyl)-gamma-aminopropylmethyl- dimethoxysilane Si***2Introduction Chemical Name : N-(beta-aminoethyl)-gamma-aminopropylmethyl- dimethoxysilane CAS NO. : ********2 Molecular Formula:NH2(CH2)2 NH(CH2)3Si CH3(OCH3)2 Foreign Company**9;s Trademark: A****0(America Union Carbon) Z****3(Dowcorning) KBM***2(ShinEtsu) GF*5(Wacker) silane Si***2 finds use as an: • Adhesion promoter in polysulfide, polyvinyl chloride plastisol, silicone, one- and two-part urethanes, and epoxy adhesives and sealants • Additive in phenolic and epoxy molding compounds • Additive to latex coatings, adhesives and sealants Features and Benefits Feature Benefit Polyamino functionally ·Reactive group for coupling with a variety of resins. ·Good wetting of substrates. Difunctional silane ·Good stability in waterborne systems. ·Improves adhesion while maintaining elongation of elastomeric systems. ·Improved shelf-life of formulated products. Typical Physical Properties Physical Form Colorless, clear liquid Specific Gravity at *0oC, g/cm3 0.**5 – 0.**5 Purity, % *7.0 min Refractive Index at *0oC 1.***0 – 1.***0 Colour, Pt-Co Max *5 Applications silane Si***2 may be used as an additive, thereby eliminating the need for special primers in numerous bonding applications. Specific systems that demonstrate improved adhesion when silane Si***2 is used are: RTV Silicones and Hybrid Silane-Crosslinked Sealants silane Si***2 addition to one- and two-part silicone-crosslinked sealants improves adhesion to a variety of substrates, including glass, aluminum and concrete. Silane Si***2 provides enhanced adhesion performance without negatively impacting elongation. It is added at a loading of 0.5 to 1.0 percent by weight. Polysulfide Sealants When added to one- and two-part polysulfide sealants, silane Si***2 provides better adhesion to a variety of substrates, including glass, aluminum and steel. Silane Si***2 is typically used at a loading of 0.5 to 1.0 percent by weight of the sealant. It disperses well into the sealant and produces cohesive failure in the sealant rather than adhesive failure of the bond between the sealant and the substrate. Furthermore, the use of silane Si***2 eliminates the need for primers normally required to achieve adhesion to surfaces. Plastisol Sealants Adding silane Si***2 as a replacement for polyaminoamide adhesion promoters in plastisol sealants improves bonding to metal substrates. In addition to increased strength, the silane-modified plastisol sealant has better overall appearance than a system that uses polyaminoamide adhesion promoters. silane Si***2modified systems have a very light color, and the cured compound is bubble-free. Additive in Phenolic and Epoxy Molding Compounds Silane Si***2, as an additive in phenolic and epoxy molding compounds, reduces the water absorption of molded composites. This, in turn, leads to improved wet electrical properties, particularly at low frequencies.