Name: DBTDL Tin Catalyst for Sealants
Brand: Coatingsink
SKU: dbtdl-tin-catalyst-sealant
Availability: InStock

Question 1

What is the recommended dosage of DBTDL in one-component moisture-cure PU sealants?

Accepted Answer

Typical loading is 0.01–0.1 phr on total formulation weight. Start at 0.05 phr and adjust based on desired skin-over and through-cure times; higher loadings accelerate cure but may shorten pot life in two-component systems.

Question 2

Is DBTDL compatible with silicone sealant systems as well as polyurethane?

Accepted Answer

Yes. DBTDL is widely used in condensation-cure (RTV) silicone sealants at 0.05–0.3 phr and in both 1K and 2K polyurethane sealants. Avoid combination with strong acids or oxidising agents, which will deactivate the catalyst.

Question 3

When should bismuth or other tin-free catalysts replace DBTDL?

Accepted Answer

DBTDL remains permitted in industrial sealant applications under REACH; however, dibutyltin compounds are SVHC candidates for certain consumer-article categories. Switch to bismuth or zinc-based catalysts for consumer-contact formulations or when OEM sustainability specifications mandate tin-free status.

Flash Point	>100°C
Tin Content	18.5%
Density (25°C)	1.066 g/ml
Viscosity (25°C)	50–60 mPa·s
Recommended Dosage	0.01–0.1 phr

DBTDL Tin Catalyst for Sealants

Specifications

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