Product - JPOXY JR 5838

Description

Jpoxy JR 5838 is a thick, strong glue made from phenol novolac. You can use it as it is, or mix it with other glues to make it easier to work with. Also, it sticks well to many materials and is perfect for tough jobs where you need a strong bond. Additionally,  this glue is great for industrial use and can handle heavy-duty tasks.

• EEW [g/eq] : 175-182
• Viscosity [mPa s] @ 25˚C :20,000-50,000@52
• Color [Gardner] : ≤1
• Density @ 25˚C [g/cc] : 1.15 – 1.20

• Paints
• Structural
• Adhesives
• Coatings

• Highly functional standard novolac resin

A1. JR 5838 is a high-viscosity multifunctional epoxy resin based on phenol novolac chemistry, offering high crosslink density, excellent heat resistance, and chemical durability. It is equivalent to EPN-type novolacs like YDPN-638 and EPN-1138.

A2. 

• Epoxy Equivalent Weight (EEW): 175–182 g/eq
• Viscosity @ 52°C: 20,000–50,000 mPa·s
• Color (Gardner): ≤1
• Density @ 25°C: 1.15–1.20 g/cc
• Appearance: High-viscosity amber liquid

A3. 

• Higher thermal stability due to dense aromatic structure
• Superior chemical resistance to acids, alkalis, and solvents
• Better dimensional stability under stress
• Higher crosslink density for structural integrity and mechanical performance

A4. 

• Paints and protective coatings requiring chemical and thermal resistance
• Structural adhesives for composites and metal bonding
• Electrical encapsulants and tooling systems
• High-performance flooring or tank-lining applications

A5. 

• Cycloaliphatic amines and anhydrides for heat-resistant coatings
• Polyamines or polyamidoamines for room-temperature cure adhesives
• Custom hardener blends to balance pot life and cure performance

A6. Yes. JR 5838 can be formulated with silica, alumina, and glass fillers, and reactive diluents may be added to adjust viscosity without compromising performance significantly.

A7. Its multi-functional structure allows tight crosslinking, giving the cured resin exceptional chemical resistance, mechanical strength, and long-term durability in aggressive environments.

A8. Unlike standard Bisphenol-A resins (e.g., JR 3000), JR 5838 has:

• More reactive epoxy groups per molecule
• Much higher crosslinking potential
• Better heat and solvent resistance
• Higher viscosity

A9. Store in sealed containers at room temperature. JR 5838 has a shelf life of 12 months from the date of manufacture under proper storage conditions.

A10. Standard packaging options include 5 kg, 10 kg, and 30 kg containers. Custom sizes are available for industrial users on request.