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

Momentive Silquest A-178 3-Methacrylamidopropyltrimethoxysilane

Momentive Silquest A-178 is a methacrylamidopropyltrimethoxysilane coupling agent from Silquest series, designed to enhance adhesion between organic polymers and inorganic substrates like glass, metals or minerals. It offers dual reactivity—hydrolyzable methoxy groups bond with inorganics while the methacrylamido group copolymerizes with acrylics, styrenics and other vinyl monomers—enabling superior composite performance in coatings, adhesives and fiber-reinforced plastics.
  • momentive silquest a 178 3 methacrylamidopropyltrimethoxysilane_69427da6
  • momentive silquest a 178 3 methacrylamidopropyltrimethoxysilane_69427da6

Features Of Momentive Silquest A-178 3-Methacrylamidopropyltrimethoxysilane

  1. Bifunctional coupling agent with methacrylamide group for covalent bonding to acrylic resins and methacrylate monomers.

  2. Trimethoxysilane functionality enables robust hydrolysis and condensation with inorganic surfaces (e.g., glass, silica, metals).

  3. Enhances adhesion, durability, and moisture resistance in filled or reinforced polymer composites.

  4. Improves dispersion and interfacial compatibility of fillers and pigments in free-radical curable systems.

  5. Compatible with UV-curable, thermal-curable, and ambient-cure formulations containing acrylates or methacrylates.

Typical Applications Of Momentive Silquest A-178 3-Methacrylamidopropyltrimethoxysilane

  1. Adhesion promoters in UV-curable coatings, inks, and adhesives for glass, metal, and plastic substrates.

  2. Surface modifier for silica, glass fibers, and mineral fillers in high-performance composites and engineering plastics.

  3. Functional additive in dental restorative resins and biomedical device materials requiring strong organic–inorganic bonding.

  4. Reactive silane in hybrid sol–gel formulations for scratch-resistant and anti-fog coatings.

  5. Performance enhancer in pressure-sensitive adhesives (PSAs) for improved cohesive strength and substrate anchorage.

Specifications Of Momentive Silquest A-178 3-Methacrylamidopropyltrimethoxysilane

Chemical TypeOrganofunctional alkoxysilane
Product FormLiquid
AppearanceClear, colorless to pale yellow liquid
Primary ApplicationsAdhesion promotion, filler surface treatment, hybrid resin formulation
Key FeaturesMethacrylamide + trimethoxysilane bifunctionality
BenefitsImproved interfacial bonding, enhanced composite mechanical properties, reduced filler agglomeration
Storage ConditionsStore in cool, dry place under nitrogen; protect from moisture and direct sunlight
Shelf Life12 months from date of manufacture when stored unopened under recommended conditions


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