Why It Matters
Sealants fail to bond to glass, metal, and engineered substrates; silane primers/adhesion promoters build a covalent tie-layer for durable, water-resistant bonds
Solution Approach
Sealants fail to bond to glass, metal, and engineered substrates; silane primers/adhesion promoters build a covalent tie-layer for durable, water-resistant bonds RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.
Typical Formulation Workflow
1
System & Substrate Assessment
Define the binder system (waterborne, solventborne, UV, powder), substrate, cure, and the VOC, durability, and appearance targets.
2
Additive & Resin Selection
Match resins, pigments and fillers, dispersants, rheology modifiers, defoamers, or biocides to the formulation and compatibility window.
3
Lab Let-Down & Optimization
Dial in loading and addition order through lab let-downs, checking dispersion, rheology, film properties, and storage stability.
4
Application & Performance Testing
Validate on the real application method and substrate, tracking gloss, adhesion, sag, cure, and weathering before scale-up.
Recommended Chemistries (3)
3-aminopropyltrimethoxysilane
CAS 13822-56-5
Silanes & Organosilanes
Methoxy analog — faster hydrolysis
Fast-hydrolyzing aminosilane primer condenses onto glass/metal hydroxyls and reacts into the sealant polymer for a covalent tie-layer
Physical Description: Clear to straw-colored liquid with an ammoniaca…
Full Details
Mercaptopropyltrimethoxysilane
CAS 4420-74-0
Silanes & Organosilanes
Mercapto silane for sulfur-cure rubber systems
Thiol group bonds strongly to metals (Cu, Au, Ag) and sulfur-cure systems where amino/epoxy silanes underperform
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3-glycidoxypropyltriethoxysilane
CAS 2602-34-8
Silanes & Organosilanes
Ethoxy analog — slower hydrolysis, better storage
Epoxy silane primer for substrates bonded with epoxy/PU/hybrid sealants; ethoxy form gives better primer storage stability
Physical Description: Liquid
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Related Product Families
● Available
Amino Silane Coupling Agents
Aminopropyl and aminoethylaminopropyl silanes for adhesion promotion between organic coatings and inorganic substrates
Adhesion PromotionCoupling
5 chemistries
View family
● Available
Epoxy Silane Coupling Agents
Glycidoxypropyl silanes for epoxy-compatible adhesion promotion and glass fiber sizing
Adhesion PromotionCrosslinking
3 chemistries
View family
● Available
Specialty Silanes
Mercapto, sulfide, and functional silanes for rubber, tire, and specialty adhesion applications
CouplingAdhesion Promotion
2 chemistries
View family