Dibutyltin Dilaurate (DBTDL) Catalyst
CAS Number: 77-58-7
Featured inIndustrial Catalysts
Dibutyltin Dilaurate (DBTDL) is an organotin Lewis acid catalyst widely used to accelerate the cure of polyurethane adhesives and sealants, RTV silicone sealants, and moisture-curing silane-modified polymer systems. It catalyzes both the urethane (NCO-OH) and urea (NCO-H2O) reactions, enabling faster room-temperature cure without significantly reducing pot life at normal use levels (0.01–0.1 phr). DBTDL is the industry-standard cure catalyst for one- and two-component PU and silicone systems.
Technical Specifications
| color | ≤3 (Gardner) |
| density | 1.05–1.07 g/cm³ |
| acidNumber | ≤1 mg KOH/g |
| appearance | Pale yellow oily liquid |
| tinContent | 17.0–18.5% |
Applications
- Catalyst in 1K and 2K polyurethane adhesives
- Cure accelerator in RTV silicone sealants
- MS polymer and SMP sealant cure catalyst
- Polyurethane foam stabilization
- Tin catalyst in polyester synthesis
Key Features
- Industry-standard PU and silicone cure catalyst
- Effective at very low loading (0.01–0.1 phr)
- Catalyzes both NCO-OH and NCO-H2O reactions
- Good balance of pot life and cure speed
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CAS Number
77-58-7
Category
Adhesive / Sealant AdditivesAvailability
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