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TIB KAT 424 is a liquid organotin catalyst based on a dibutyltin compound, specifically designed for curing silicones and silane-terminated systems.
TIB KAT 424 is highly effective in one-component (1K) moisture-curing systems, including MS polymers and alkoxy-functional RTV silicones.
TIB KAT 424 offers a balance of fast reactivity and good storage stability, making it ideal for adhesives, sealants, and coating applications.
CAS Number: 818-08-6
EC Number: Not assigned
Molecular Formula: C8H18OSn
Molecular Weight: 248.94 g/mol
Synonyms: TIB KAT 424, Dibutyltin oxide (DBTO), DBT-based catalyst, Organotin catalyst 424, TIB KAT 424 silicone catalyst, TIB KAT 424 silane curing catalyst, MS polymer catalyst 424, RTV silicone curing catalyst, Moisture-curing catalyst 424, Tin-based curing agent, Hybrid polymer catalyst 424
APPLICATIONS
TIB KAT 424 is used in the curing of silicones and silane-terminated polymer systems.
TIB KAT 424 is applied in one-component (1K) moisture-curing MS polymer systems for adhesives and sealants.
TIB KAT 424 is utilized in alkoxy-functional RTV silicone formulations to enable ambient curing.
TIB KAT 424 is suitable for construction and automotive industry adhesives and sealants.
TIB KAT 424 is incorporated into coatings requiring moisture-reactive crosslinking.
TIB KAT 424 is effective in systems demanding controlled reactivity and long shelf-life.
TIB KAT 424 supports compatibility with a wide range of fillers and pigments.
TIB KAT 424 is ideal for formulations requiring low volatility and high thermal stability.
TIB KAT 424 ensures high-performance curing without compromising pot life or handling.
TIB KAT 424 is used as a catalyst in the production of flexible polyurethane foams, accelerating the reaction between polyols and isocyanates.
TIB KAT 424 is employed in slabstock foam manufacturing for mattresses and furniture cushioning.
TIB KAT 424 is applied in high-resilience (HR) foam systems for automotive seating and interior parts.
TIB KAT 424 is used in molded flexible foam applications, ensuring fine cell structure and superior comfort.
TIB KAT 424 is utilized in viscoelastic memory foam systems to control recovery time and softness.
TIB KAT 424 is used in open-cell flexible foam formulations for breathable mattress and cushion foams.
TIB KAT 424 is employed in low-VOC flexible foam systems to meet indoor air quality standards.
TIB KAT 424 is applied in flame-retardant flexible foam formulations for furniture and transportation applications.
TIB KAT 424 is used in the production of noise-dampening acoustic foams for automotive and building industries.
TIB KAT 424 is utilized in carpet underlay foam systems for enhanced durability and comfort.
TIB KAT 424 is used in flexible packaging foams for protective cushioning in electronics and delicate goods.
TIB KAT 424 is employed in the development of lightweight foam sheets for insulation and cushioning.
TIB KAT 424 is applied in the fabrication of ergonomic foams for office furniture and seating.
TIB KAT 424 is used in flexible foam systems designed for orthopedic mattresses and medical cushions.
TIB KAT 424 is utilized in shoe sole foam production to enhance comfort and wear resistance.
TIB KAT 424 is used in hybrid foams where both softness and support are required in a single system.
TIB KAT 424 is applied in flexible foams for toys and leisure goods requiring soft, durable properties.
TIB KAT 424 is used in medical-grade foams for anti-decubitus mattresses and wheelchair cushions.
TIB KAT 424 is employed in the production of headrests, armrests, and trim foams for automotive interiors.
TIB KAT 424 is used in high-performance seat cushioning for aircraft and public transport vehicles.
TIB KAT 424 is applied in dual-hardness automotive seat foams for comfort and support zoning.
TIB KAT 424 is used in soundproofing panels made from flexible foam for office and industrial use.
TIB KAT 424 is utilized in roll-to-roll foam production systems for continuous foam manufacturing.
TIB KAT 424 is used in low-density flexible foam products for lightweight packaging and cushioning.
TIB KAT 424 is applied in the production of durable, flexible foams for high-use furniture.
TIB KAT 424 is used in vibration-damping flexible foams for industrial machinery insulation.
TIB KAT 424 is employed in memory foam pillow and mattress manufacturing for pressure relief.
TIB KAT 424 is used in acoustic insulation foams for theaters, studios, and automotive interiors.
TIB KAT 424 is applied in the manufacturing of flexible foams for gym mats and sports padding.
TIB KAT 424 is used in flexible foam systems requiring non-yellowing and UV-stable properties.
TIB KAT 424 is a polyurethane catalyst designed to optimize the gelling and blowing balance in flexible foam formulations.
TIB KAT 424 appears as a clear to light yellow liquid, offering easy dosing and excellent processability.
TIB KAT 424 is formulated to promote uniform cell structure, improving foam airflow and softness.
TIB KAT 424 enhances foam elasticity and resilience, making it ideal for high-performance applications.
TIB KAT 424 is compatible with polyether and polyester polyols commonly used in flexible foam production.
DESCRIPTION
TIB KAT 424 is a clear to slightly yellowish liquid with a mild odor, offering reliable moisture-curing performance in various resin systems.
TIB KAT 424 is based on a dibutyltin oxide structure and facilitates the catalysis of hydrolysis and condensation reactions essential for crosslinking.
TIB KAT 424 maintains a balance between fast reactivity and extended shelf life, ensuring consistent results in adhesive and sealant formulations.
TIB KAT 424 is sensitive to hydrolysis; hence, exposure to moisture must be minimized during handling and storage.
Once opened, containers should be blanketed with nitrogen to maintain product quality.
TIB KAT 424 supports fast skin-over and tack-free times in moisture-curing systems while ensuring excellent final mechanical properties.
TIB KAT 424 offers controlled reactivity, allowing adjustments to cream time and rise time to suit different production lines.
TIB KAT 424 is suitable for low-emission flexible foam systems that comply with automotive and furniture emission standards.
TIB KAT 424 supports stable foam curing even under varying temperature and humidity conditions.
TIB KAT 424 is typically used at concentrations between 0.05 and 0.3 parts per 100 parts of polyol.
TIB KAT 424 is widely used in automotive, furniture, bedding, and medical foam industries for applications demanding comfort, performance, and durability.
PROPERTIES
Chemical Nature: Dibutyltin oxide (DBTO)
Common Name: TIB KAT 424
Appearance: Clear to slightly yellow liquid
Odor: Mild
Density: Approx. 1.1 g/cm³
Solubility: Soluble in organic solvents; hydrolytically sensitive
Flash Point: >100°C
Reactivity: Catalyzes hydrolysis and crosslinking in moisture-curing systems
Thermal Stability: Stable under recommended dry storage conditions
Storage Temperature: 10–30°C in dry, sealed containers
Shelf Life: Minimum 12 months unopened
Packaging: 200 kg drums or customized industrial packaging (on request)
FIRST AID
Inhalation:
Move to fresh air.
Seek medical attention if respiratory symptoms occur.
Skin Contact:
Wash thoroughly with soap and water.
Remove contaminated clothing.
Seek medical help if irritation develops.
Eye Contact:
Flush cautiously with water for at least 15 minutes.
Remove contact lenses if easy to do.
Seek medical advice if irritation persists.
Ingestion:
Rinse mouth thoroughly.
Do not induce vomiting.
Seek immediate medical attention.
Note to Physicians:
Treat symptomatically; no specific antidote available.
HANDLING AND STORAGE
Handling
Use only with adequate ventilation.
Wear protective gloves, goggles, and clothing.
Avoid inhalation of vapors and contact with skin or eyes.
Spill and Leak Procedures
Contain spills with inert material such as sand.
Prevent product from entering drains or waterways.
Dispose of waste in accordance with local environmental regulations.
Storage
Store in tightly closed, moisture-free containers.
Protect from humidity, direct sunlight, and frost.
Use nitrogen blanketing for partially used containers to prevent hydrolysis.
