ShinEtsu KBM-803 is 3-Mercaptopropyltrimethoxysilane, a sulfur-containing silane coupling agent with trimethoxy hydrolyzable groups and mercapto functional groups. It can chemically bond between inorganic materials such as silica, clay, talc, glass, metal surfaces and organic polymers including rubber, silicone, epoxy and polyurethane. KBM-803 is especially suitable for rubber compounding, tire tread formulations, shoe materials, conveyor belts, rubber rollers and mineral-filled polymer systems. It helps improve filler dispersion, rubber-filler interfacial adhesion, tensile strength, abrasion resistance, resilience and overall dynamic mechanical properties.

Product Type: Silane

Kind: Mercapto Silane Coupling Agent

Appearance: Colorless to light yellow transparent liquid

Boiling Point: 219°C

Flash Point: 107°C

Specific Gravity @ 25°C: 1.060

Refractive Index (RI): 1.440

Molecular Weight: 196.4

Solubility: Miscible with common organic solvents including toluene, xylene, ketones and alcohols

Package: 20kg metal drum

· Mercapto functional group, provides good reactivity with rubber, sulfur vulcanization systems and metal surfaces

· Improves adhesion between silica fillers and rubber matrices

· Enhances filler dispersion, reducing compound viscosity and improving processability

· Increases tensile strength, abrasion resistance, modulus and dynamic mechanical properties of rubber products

· Suitable for low-filler and high-filler rubber systems

· Can improve water resistance, heat resistance and interfacial stability of filled polymers

· Colorless to light yellow liquid form, convenient for industrial compounding and liquid addition

· Rubber compounding and tire tread formulations

· Silica-filled rubber, natural rubber, SBR, BR and EPDM systems

· Rubber shoe soles, conveyor belts, rubber rollers and rubber seals

· Adhesion promoter for rubber-to-metal bonding

· Surface modifier for silica, clay, talc and mineral fillers

· Silicone rubber and polyurethane modification

· Adhesive, sealant and coating systems requiring sulfur-containing reactivity

· Industrial rubber products requiring high strength and wear resistance