Abstract
N-(n-Butyl)-3-aminopropyltrimethoxysilane (CAS No. 31024-56-3), Silane coupling agent SCA-A64M, is a versatile amino functional coupling agents used over a broad range of applications to provide superior bonds between inorganic substrates and organic polymers. The secondary amine function reacts with a wide array of thermoset, thermoplastic and elastomeric materials.
Identification
Name: N-(n-Butyl)-3-aminopropyltrimethoxysilane
Synonyms: N-(3-(Trimethoxysilyl)propyl)butylamine; N-(3-Trimethoxysilylpropyl)butan-1-amine
Molecular Formula: C10H25NO3Si
Molecular Weight: 235.40
CAS Registry Number: 31024-56-3
EINECS: 250-437-8
Equivalents
1189
Properties
Density: 0.950
Boiling point: 238 º C
Viscosity: 2.5
Water solubility: REACTS
Application
N-(n-Butyl)-3-aminopropyltrimethoxysilane (CAS No. 31024-56-3), Silane coupling agent SCA-A64M, is a bifunctional secondary amino-functional silane. It is an important additive for many applications. Examples are:
Silane-endcapped Polyurethanes: Silane-terminated polyurethanes can be prepared by reacting traditional NCO-terminated urethane prepolymers with SCA-A64M. It can react very fast with free isocyanate groups and lead to a high converted silane-endcapped product. Side reactions can be significantly reduced. SCA-A64M is the most recommended silane for endcapping Polyurethanes. It leads to colorless low-viscosity PU prepolymers with improved UV stability and reduced yellowing tendency of sealants. Another benefit of SCA-A64M is that it does not contain traces of toxic aniline.
Examples of applications where SCA-A64M used include polyurethanes for structural adhesives, parquet adhesives and over-paintable hybrid sealant.
Glass fiber/glass fabric composites: As a finish or size constituent
Mineral fiber insulating materials and abrasives: As an additive to phenolic resin binders
Foundry resins: As an additive to phenolic, furan and melamine resins
Sealants and adhesives: As a primer or additive and for chemical modification
Mineral-filled polymers (composites) or HFFR cables: For pretreatment of fillers and pigments
Paints and coatings: As an additive and primer for improving adhesion to the substrate.
As a primer for glass and metal.
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