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FASCAT® 4208X Catalyst
FASCAT® 4208X, dibutyltin bis(2-ethylhexoate in 50% xylene), is a catalyst used in silanol condensation reactions for silicone-based caulk and sealants.
Fulfilled By ChemPoint
- Manufacturer: PMC Organometallix Inc.
- Product Line: FASCAT® Tin Catalysts
- Product: FASCAT® Butyl Tin Catalysts
- Industries: Adhesives | Elastomers
- Authorized Countries: Canada | United States
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Overview
The FASCAT® 4208X catalyst is utilized in silanol condensation reactions for caulk and sealant applications, as well as in the manufacturing process of silicones. The suggested usage level for FASCAT® 4208X in formulations is 1.3%. It exhibits moderate activity as a curing catalyst for silanol condensation polymerization processes.
FASCAT® 4208X can be utilized in systems containing one or two components compatible with aromatic solvents. The FASCAT® 4208X has a moderate level of activity, providing silicone emulsions and adhesives that cure at room temperature for an extended pot life.
Specifications
Form: Liquid
Color: White to straw
CAS registry number: 2781-10-4 (1330-20-7 xylene)
Formula: Bu2Sn(OOC8H15)2
Molecular Weight: 491.4
Sn %: 11.9
Specific gravity: (@ 25°C) 0.97
Refractive index: 1.483
Viscosity: 3 cs
APHA color: 29
Primary Chemistry: Dibutyltin bis(2-ethylhexoate in 50% Xylene)
Features & Benefits
Insoluble in water
Liquid form for ease of processing
Incorporated into the final product and does not require removal
Soluble in many organic solvents
Problems Solved
Lack of catalyst activity in silanol condensation reactions
Current catalyst does not extend pot life for silicone emulsions
Applications
Chemical intermediate manufacturing
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