Why It Matters
Delamination between dissimilar coating layers (e.g., epoxy primer to polyurethane topcoat) from poor interfacial bonding; needs coupling/surface-treatment chemistry
Solution Approach
Delamination between dissimilar coating layers (e.g., epoxy primer to polyurethane topcoat) from poor interfacial bonding; needs coupling/surface-treatment chemistry 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-aminopropyltriethoxysilane
CAS 919-30-2
Silanes & Organosilanes
Primary amino silane for coatings adhesion
Aminosilane: silanol end hydrolyzes/condenses to the inorganic/lower layer while the amine reacts into the organic upper coat, covalently bridging the interface
Melting Point: -70 °C Boiling Point: 217 °C Density: 0.94 at 25 °C
Full Details
3-glycidoxypropyltrimethoxysilane
CAS 2530-83-8
Silanes & Organosilanes
Primary epoxy silane for coatings and composites
Epoxy silane couples epoxy/PU layers — epoxide reacts with amine/hydroxyl of the topcoat while silanols anchor to the substrate or prior film
Vapor Pressure: 0.002
Full Details
3- (2-Aminoethylamino) propyltrimethoxysilane
CAS 1760-24-3
Silanes & Organosilanes
Diamine silane for enhanced adhesion
Diamino silane gives two reactive amine sites for stronger interfacial bonding and faster methoxy hydrolysis
Physical Description: Light yellow liquid Vapor Pressure: 0.03
Full Details
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