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

Momentive Silquest A-187 Gamma-glycidoxypropyltrimethoxysilane

Momentive Silquest A-187 is a gamma-glycidoxypropyltrimethoxysilane coupling agent from the Silquest series, widely used to enhance adhesion between organic polymers and inorganic substrates like glass, metals or minerals. It improves mechanical strength, moisture resistance and composite performance in coatings, adhesives, sealants and fiber-reinforced composites.
  • momentive silquest a 187 gamma glycidoxypropyltrimethoxysilane_fbd9472e
  • momentive silquest a 187 gamma glycidoxypropyltrimethoxysilane_fbd9472e

Features Of Momentive Silquest A-187 Gamma-glycidoxypropyltrimethoxysilane

  1. Reactive bifunctional silane with epoxy and hydrolysable methoxy groups for covalent bonding to both organic polymers and inorganic substrates.

  2. Enhances adhesion, moisture resistance, and mechanical performance in filled and reinforced composites.

  3. Improves dispersion and interfacial compatibility of silica, glass, and mineral fillers in epoxy, phenolic, and acrylic resin systems.

  4. Enables stable aqueous hydrolysis under controlled pH conditions for use in waterborne coatings and sealants.

  5. Offers excellent shelf life when stored under anhydrous, cool, and dark conditions.

Typical Applications Of Momentive Silquest A-187 Gamma-glycidoxypropyltrimethoxysilane

  1. Epoxy-based structural adhesives and laminating resins for aerospace and automotive composites.

  2. High-performance glass fiber sizing for reinforced thermoset and thermoplastic matrices.

  3. Moisture-curable silicone and hybrid polymer sealants requiring enhanced substrate adhesion.

  4. Filler-treated silica and fumed silica in high-clarity RTV silicones and LED encapsulants.

  5. Surface modification of nanoparticles and engineered minerals for advanced polymer nanocomposites.

Specifications Of Momentive Silquest A-187 Gamma-glycidoxypropyltrimethoxysilane

Chemical TypeOrganofunctional silane (epoxyalkyl alkoxysilane)
Product FormLiquid
AppearanceClear, colorless to pale yellow liquid
Primary ApplicationsAdhesion promotion, filler surface treatment, coupling agent for epoxy and silicone systems
Key FeaturesBifunctional reactivity (epoxy + methoxy), hydrolyzable alkoxy groups, low volatility
BenefitsImproved composite strength, reduced moisture sensitivity, enhanced filler-matrix bonding
Molecular Weight236.3 g/mol
Specific Gravity (25°C)1.07–1.09 g/cm³


Get in Touch with ERICW
Let competitive chemical materials go global.

Your Name *

Your Email *

Your Phone

Country

Your Message *