Why It Matters
One-part RTV silicone and silane-modified hybrid sealants cure by reacting alkoxy/acetoxy/oxime crosslinkers with atmospheric moisture; needs crosslinker (and catalyst) selection
Solution Approach
One-part RTV silicone and silane-modified hybrid sealants cure by reacting alkoxy/acetoxy/oxime crosslinkers with atmospheric moisture; needs crosslinker (and catalyst) selection 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 (4)
Methyltriacetoxysilane
CAS 4253-34-3
Silanes & Organosilanes
Acetoxysilane for RTV sealants
Acetoxy crosslinker for 1-part RTV silicone — hydrolyzes with ambient moisture releasing acetic acid and forming the siloxane network
Vapor Pressure: 0.2
Full Details
Methyltris(Methylethylketoxime)Silane
CAS 22984-54-9
Silanes & Organosilanes
Oximosilane for non-corrosive sealants
Oximosilane crosslinker for neutral/non-corrosive RTV sealants, releasing MEK-oxime instead of acid so it is safe on metals/masonry
Full Details
Vinyltris(2-Methoxyethoxy)Silane
CAS 1067-53-4
Silanes & Organosilanes
Vinyl silane for moisture-cure systems
Methoxyethoxy crosslinker used in moisture-cure and silane-modified polymer sealants for controlled cure rate
Full Details
Vinyl-Terminated Polydimethylsiloxane (Vinyl PDMS)
CAS 68951-99-5
Silicone Fluids & Oils
Reactive silicone for crosslinked films
Reactive silicone base polymer that is end-crosslinked into the cured RTV elastomer network
Full Details
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