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

Momentive Silquest A-Link 600 Polyurethane adhesion promoter

Momentive Silquest A-Link 600 is a silane-based polyurethane adhesion promoter from Momentive’s Silquest® series. It enhances bonding between PU sealants/adhesives and challenging substrates like glass, metal, and painted surfaces. Acts as a molecular bridge via hydrolyzable alkoxy groups and reactive amine functionality. Improves durability, moisture resistance, and long-term interfacial strength in demanding automotive and construction applications.
  • momentive silquest a link 600 polyurethane adhesion promoter_b03ff591
  • momentive silquest a link 600 polyurethane adhesion promoter_b03ff591

Features Of Momentive Silquest A-Link 600 Polyurethane adhesion promoter

  1. Enhances interfacial adhesion between polyurethane sealants/adhesives and low-surface-energy substrates such as aluminum, stainless steel, and anodized metals.

  2. Contains dual-reactive silane functionality—alkoxy silane groups for covalent bonding to inorganic surfaces and urethane-reactive groups for integration into PU polymer networks.

  3. Improves long-term durability of bonded assemblies under humid, thermal, and cyclic stress conditions.

  4. Compatible with one-component (1K) and two-component (2K) moisture-curing and catalyzed polyurethane systems.

  5. Enables reduced surface pretreatment requirements—supports direct application on lightly cleaned or solvent-wiped metal substrates.

Typical Applications Of Momentive Silquest A-Link 600 Polyurethane adhesion promoter

  1. Automotive glazing and structural bonding of windshields and panoramic roofs.

  2. Architectural curtain wall and façade sealing where PU sealants interface with metal framing and cladding.

  3. Industrial assembly of metal-to-elastomer or metal-to-plastic components using polyurethane adhesives.

  4. Rail transportation bonding applications requiring high-humidity resistance and vibration durability.

Specifications Of Momentive Silquest A-Link 600 Polyurethane adhesion promoter

Chemical TypeBifunctional silane with alkoxy and urethane-reactive groups
Product FormClear, colorless to pale yellow liquid
AppearanceHomogeneous, low-viscosity liquid
Primary ApplicationsPolyurethane sealants, adhesives, and coatings for metal substrates
Key FeaturesCovalent substrate bonding + polymer network integration
BenefitsImproved peel strength, humidity resistance, and aging performance
Storage ConditionsStore in tightly sealed containers at 5–30 °C; protect from moisture and direct sunlight


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