Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Shin-Etsu KBE-846 Bis(triethoxysilylpropyl)tetrasulfide

Shin-Etsu KBE-846 is a high-performance bis(triethoxysilylpropyl)tetrasulfide coupling agent from Shin-Etsu’s KBE series. It enhances adhesion between inorganic fillers (e.g., silica, carbon black) and organic polymers—especially in sulfur-cured rubber compounds like tires. Its tetrasulfidic structure ensures strong covalent bonding and improved mechanical properties, abrasion resistance, and wet traction. Widely used in green tire technology for reduced rolling resistance and eco-friendly performance.
  • shin etsu kbe 846 bis triethoxysilylpropyl tetrasulfide_0a758c67
  • shin etsu kbe 846 bis triethoxysilylpropyl tetrasulfide_0a758c67

Features Of Shin-Etsu KBE-846 Bis(triethoxysilylpropyl)tetrasulfide

  1. Highly effective silane coupling agent for enhancing rubber-to-metal adhesion in sulfur-cured elastomers.

  2. Tetrasulfide bridge provides superior dynamic fatigue resistance and improved tensile strength in reinforced rubber compounds.

  3. Triethoxysilyl groups ensure rapid hydrolysis and strong covalent bonding with silica, glass, and metal oxide surfaces.

  4. Low volatility and excellent storage stability under ambient, dry conditions.

  5. Compatible with conventional rubber processing equipment and widely used in high-volume tire manufacturing.

Typical Applications Of Shin-Etsu KBE-846 Bis(triethoxysilylpropyl)tetrasulfide

  1. Tire tread and sidewall compounds requiring enhanced silica dispersion and reduced rolling resistance.

  2. Steel-belted radial tires where robust rubber-to-steel cord adhesion is critical for durability and safety.

  3. Industrial rubber products including conveyor belts, hoses, and vibration-damping mounts.

  4. Silica-reinforced EPDM and natural rubber formulations for automotive weatherstripping and seals.

Specifications Of Shin-Etsu KBE-846 Bis(triethoxysilylpropyl)tetrasulfide

Chemical TypeBis(triethoxysilylpropyl)tetrasulfide
Product FormLiquid
AppearancePale yellow to light amber clear liquid
Density (25°C)1.17–1.19 g/cm³
Refractive Index (25°C)1.490–1.495
Flash Point (COC)≥ 130°C
SolubilityMiscible with common organic solvents (e.g., toluene, xylene, alcohols); hydrolyzes in presence of moisture
Storage ConditionsStore in tightly sealed containers under dry, inert atmosphere at 5–30°C


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