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

Momentive SILQUEST A-1891 Silane Coupling Agent

Momentive SILQUEST A-1891 (γ-mercaptopropyltrimethoxysilane) Silane Coupling Agent enhances adhesion between organic polymers (e.g., rubber, epoxy) and inorganic substrates (e.g., silica, metals) via its mercapto and methoxy groups. It improves mechanical strength, filler dispersion, and crosslinking efficiency in tires, coatings, and composites. Compatible with sulfur-cured systems, it enables rapid curing at ambient temperatures while complying with REACH standards, ideal for low-rolling-resistance tires and rubber hoses

Features Of Momentive SILQUEST A-1891 Silane Coupling Agent

  1. Dual Reactivity - Mercapto bonds with polymers; methoxy links to fillers/metals

  2. Dynamic Performance - Enhances modulus, abrasion resistance, and wet strength retention (>90%)

  3. Process Efficiency - Low viscosity (1.045 g/cm³) for easy filler dispersion

  4. Multi-Matrix Compatibility - Works with EPDM, SBR, and polyurethanes

  5. Sustainability - Halogen-free, reduces VOC emissions in formulation

Typical Applications Of Momentive SILQUEST A-1891 Silane Coupling Agent

  1. Tire Manufacturing - Silica reinforcement for low rolling resistance

  2. Rubber Compounding - Seals, hoses with improved wear resistance

  3. Cable Insulation - Enhances dielectric properties in EPDM systems

  4. Anti-Corrosion Coatings - Metal adhesion and chemical resistance

Specifications Of Momentive SILQUEST A-1891 Silane Coupling Agent

Chemical Name
γ-Mercaptopropyltrimethoxysilane
Appearance
Colorless to light yellow transparent liquid
Active Content
≥98%
Density (25℃)
1.07 g/ml
Refractive Index (25℃)
1.427
Boiling Point
290℃
Flash Point
149℃
Packaging
25KG/drum


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