Momentive Silquest A-187 – Epoxy Functional Silane (18Kg Drum)

Description

Momentive Silquest A-187

Momentive Silquest A-187 (3-Glycidoxypropyltrimethoxysilane) is an epoxy-functional silane used as an adhesion promoter and crosslinking agent in various polymer systems. The epoxy ring in its structure reacts with organic functional groups, while its trimethoxy silane moiety bonds to inorganic substrates, forming a durable chemical bridge between dissimilar materials.

This dual functionality enhances wet and dry adhesion, electrical performance, and mechanical strength in composite materials, coatings, sealants, and adhesives. Silquest A-187 is suitable for both solvent-based and waterborne systems, offering excellent stability and non-yellowing properties.

Applications include epoxy encapsulants, SPUR+ prepolymers, polyurethane sealants, acrylic caulks, and electronic packaging materials. It’s widely used in automotive, construction, electrical, and aerospace manufacturing where long-term adhesion and corrosion resistance are critical.

Uses of the Product

• Adhesion promoter in epoxy, urethane, acrylic, and polysulfide sealants.

• Coupling agent in fiber-reinforced plastics and composites.

• Surface modifier for glass, ceramics, metals, and fillers.

• Additive in epoxy encapsulants to improve wet adhesion.

• Primer component for coatings, adhesives, and sealants.

Applications

• Electronics & Electrical Packaging

• Automotive & Aerospace Coatings

• Construction & Architectural Sealants

• Industrial Adhesives & Composites

• Paints & Protective Coatings

Technical Specifications

Chemical Name: 3-Glycidoxypropyltrimethoxysilane
Chemical Formula: C₉H₂₀O₅Si
Molecular Weight: 236.1 g/mol
Appearance: Clear, colorless to pale liquid
Specific Gravity @ 25°C: 1.069
Refractive Index (nD 25°C): 1.427
Boiling Point: 290 °C (554 °F)
Flash Point (ASTM D93): 110 °C (230 °F)
Solubility: Soluble in water (after hydrolysis), alcohols, ketones, and esters
Hydrolysis Byproduct: Methanol
Functional Group: Epoxy + Trimethoxysilane
Use Level (Typical): 0.5–1.5 parts by weight (pbw) in most formulations
Shelf Life: 12 months (unopened, stored below 30 °C)
Packaging: 18 Kg Drum

Why Buy From Maisam Dubai

• Supplier of genuine Momentive Silquest functional silanes.

• Epoxy-based adhesion promoter with global OEM compliance.

• Expertise in industrial coatings, sealants, and composite systems.

• Competitive pricing for bulk and industrial procurement.

• Fast delivery across UAE, Saudi Arabia, Oman, Qatar, Bahrain, and Kuwait.

FAQs

Q1. What is Silquest A-187 used for?
It is used as an adhesion promoter and coupling agent in epoxy, urethane, and hybrid polymer systems.

Q2. What is the active chemistry of Silquest A-187?
It combines epoxy and trimethoxy silane functionalities, forming strong bonds between organic resins and inorganic substrates.

Q3. Is it compatible with waterborne systems?
Yes, it is suitable for waterborne acrylics and vinyl-acrylic caulks.

Q4. What materials does it bond to?
It bonds to glass, metal, ceramics, mineral fillers, and reinforced plastics.

Q5. What are its benefits in epoxy systems?
It enhances wet adhesion, corrosion resistance, and electrical properties in encapsulants and adhesives.

Q6. Do you supply across GCC?
Yes, Maisam Dubai supplies Momentive Silquest A-187 across UAE, Saudi Arabia, Oman, Qatar, Bahrain, and Kuwait.

Call to Action

Looking for Momentive Silquest A-187 Epoxy Functional Silane in the GCC?
📞 Phone: +971 52 167 2252
📩 Email: sales@maisamdubai.com
🌍 Serving: UAE, Saudi Arabia, Oman, Qatar, Bahrain, Kuwait and Dubai